CN108110906A - A kind of inversion system and detection method based on non-contact power technology - Google Patents
A kind of inversion system and detection method based on non-contact power technology Download PDFInfo
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- CN108110906A CN108110906A CN201810046026.8A CN201810046026A CN108110906A CN 108110906 A CN108110906 A CN 108110906A CN 201810046026 A CN201810046026 A CN 201810046026A CN 108110906 A CN108110906 A CN 108110906A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Inverter Devices (AREA)
Abstract
The present invention proposes a kind of inversion system and detection method based on non-contact power technology, including solar cell, DC AC electrical energy transformers circuit, non-contact transformer, rectification circuit, filter circuit and inverter circuit, solar cell is connected with DC AC electrical energy transformer circuits, DC AC electrical energy transformer circuits are connected with non-contact transformer, non-contact transformer is connected with rectification circuit, rectification circuit is connected with filter circuit, and filter circuit is connected with inverter circuit；The non-contact transformer includes the primary coil and secondary coil that intercouple, and length is equipped between primary coil and secondary coil and is more than 2mm, the gap that can accommodate roofing surface layer or metope waterproof material.Compared with traditional circuit, the present invention can save the conducting wire that solar cell introduces building or structures；Due to no lead-in conductor, solar panel can also serve as waterproof material.
Description
Technical field
The present invention relates to contact power supply and the technical field automatically controlled more particularly to based on the inverse of non-contact power technology
Change system and detection method.
Background technology
Usual solar cell is mounted obliquely on roofing, otherwise distributed solar energy battery draws lower wire along roofing
Or leading to distribution facility in building, through waterproof layer, these conducting wires will take safe fixation to prevent strong wind
It harasses, while being also contemplated that prevents rainwater from flowing into interior of building along electric wire or cable, hence it is evident that maintenance cost is added, also to room
Face water-proofing treatment adds difficulty.
In addition, if can not have to conducting wire connection can be transferred to building by the electric energy of the solar cell mounted on metope
Inside, then it will be a kind of practicable scheme for obtaining the energy that solar cell, which is mounted on metope,.Therefore, the sun mounted
Energy battery can both generate electricity, and can also double as thermal insulation material even ornament materials, effectively save building cost, reduce resource
Using and improve utilization results of energy.
The content of the invention
For solar cell conducting wire is needed to introduce in building, add maintenance cost and roof waterproof intractability
Technical problem, the present invention proposes a kind of inversion system and detection method based on non-contact power technology, using non-contact transformation
Device transfers energy, can save solar cell and guide to conducting wire on the inside of waterproof layer by building roofing or metope, reduce money
Source using and improve utilization results of energy.
In order to achieve the above object, the technical proposal of the invention is realized in this way：One kind is based on non-contact power technology
Inversion system, including solar cell, DC-AC electrical energy transformers circuit, non-contact transformer, rectification circuit, filter circuit
And inverter circuit, solar cell are connected with DC-AC electrical energy transformer circuits, DC-AC electrical energy transformers circuit with it is non-contact
Transformer is connected, and non-contact transformer is connected with rectification circuit, and rectification circuit is connected with filter circuit, filter circuit with
Inverter circuit is connected；The non-contact transformer includes the primary coil and secondary coil that intercouple, primary coil and pair
Length is equipped between the circle of sideline and is more than 2mm, the gap that roofing surface layer or metope waterproof material can be accommodated；The DC-AC electric energy becomes
The direct current that converter circuit obtains solar cell is changed into alternating current, and frequency is 20kHz ~ 100MHz, through non-contact transformation
The primary coil of device transfers energy to secondary coil in a non contact fashion, secondary coil obtain alternating current pass to rectification circuit and
Filter circuit carries out rectifying and wave-filtering and obtains direct current, then stable industrial-frequency alternating current is reverse by inverter circuit, supplies thereafter
Load uses or transmits energy to power grid.
Further include converter control circuit and inverter control circuit, converter control circuit and DC-AC electrical energy transformers electricity
Road is connected；The inverter control circuit is connected with inverter circuit, inverter circuit respectively with voltage signal detection circuit and electricity
Stream signal deteching circuit is connected, and voltage signal detection circuit is connected with the first signal processing circuit, the first signal processing electricity
Road is connected with inverter control circuit, and current signal detection circuit is connected with secondary signal process circuit, secondary signal processing
Circuit is connected with inverter control circuit；The voltage signal detection circuit is by output voltageu oIt is changed into low AC voltage signalu os, current detection circuit is by output currenti oIt is changed into low AC voltage signalu ios, voltage signal detection circuit will treated
Signal sends the first signal processing circuit to, and current signal detection circuit will treated sends secondary signal process circuit to,
First signal processing circuit will treated signalx u(t) sending inverter control circuit to, secondary signal process circuit will be handled
Signal afterwardsx i(t) send inverter control circuit to.
The DC-AC electrical energy transformers circuit is half-bridge converter circuit, full-bridge type translation circuit, push-pull type translation circuit
Or push-pull type self-sustaining translation circuit；
The half-bridge converter circuit includes capacitanceC 1, capacitanceC 2, switching tube S1With switching tube S2, capacitanceC 1And capacitanceC 2Series connection connects
Branch and switching tube S after connecing1With switching tube S2The branch circuit parallel connection connection being connected in series, capacitanceC 1And capacitanceC 2Place branch
Both ends be connected with the output terminal of solar cell, capacitanceC 1And capacitanceC 2Midpoint, switching tube S1With switching tube S2Midpoint
It is connected respectively with the input terminal of non-contact transformer；
The full-bridge type translation circuit includes switching tube S3, switching tube S4, switching tube S5With switching tube S6, switching tube S3And switch
Pipe S4Branch and switching tube S after being connected in series5With switching tube S6The branch circuit parallel connection connection being connected in series, switching tube S3And switch
Pipe S4The both ends of place branch are connected respectively with the output terminal of solar cell, switching tube S3With switching tube S4Midpoint, switch
Pipe S5With switching tube S6Midpoint be connected respectively with the input terminal of non-contact transformer；
The push-pull type translation circuit includes inductanceL 1, division inductanceL 2, division inductanceL 3, switching tube S7With switching tube S8, inductanceL 1Respectively with dividing inductanceL 2With division inductanceL 3It is connected, divides inductanceL 2With division inductanceL 3It is coupled using magnetic core, different name end
It is connected, divides inductanceL 2With switching tube S7It is connected in series, divides inductanceL 3With switching tube S8It is connected in series, switching tube S8With switching tube
S7It is connected in parallel, inductanceL 1, switching tube S7It is connected respectively with the output terminal of solar cell, divides inductanceL 2With switching tube S7's
Midpoint, division inductanceL 3With switching tube S8Midpoint be connected respectively with the input terminal of non-contact transformer；
The push-pull type self-sustaining translation circuit includes inductanceL 4, division inductanceL 5, division inductanceL 6, resistanceR 1, resistanceR 2, electricity
HoldC 3, capacitanceC 4, switching tube S9With switching tube S10, inductanceL 4Respectively with dividing inductanceL 5, division inductanceL 6It is connected, divides inductanceL 5With division inductanceL 6It is coupled using magnetic core, different name end is connected；Divide inductanceL 5With switching tube S9It is connected in series, divides inductanceL 6With
Switching tube S10It is connected in series；Divide inductanceL 5With switching tube S9Midpoint respectively with capacitanceC 3With resistanceR 1It is connected, capacitanceC 3With
ResistanceR 1It is connected in parallel rear and switching tube S10Base stage be connected, divide inductanceL 6With switching tube S10Midpoint respectively with capacitanceC 4
With resistanceR 2It is connected, capacitanceC 4With resistanceR 2It is connected in parallel rear and switching tube S9Base stage be connected, divide inductanceL 5With switch
Pipe S9Series circuit and division inductanceL 6With switching tube S10Series circuit be connected in parallel；InductanceL 4, switching tube S9Respectively with too
The output terminal of positive energy battery is connected, and divides inductanceL 5With switching tube S9Midpoint, division inductanceL 6With switching tube S10Midpoint point
It is not connected with the input terminal of non-contact transformer.
The non-contact transformer includes compensation circuit, and non-contact transformer is string-series resonant circuit, series-multiple connection
Resonance circuit, parallel-serial resonance circuit or simultaneously-antiresonant circuit；
String-the series resonant circuit includes capacitanceC P1, inductanceL P1, capacitanceC S1And inductanceL S1, capacitanceC P1And inductanceL P1Series connection
Connection, capacitanceC S1And inductanceL S1It is connected in series, inductanceL P1And inductanceL S1It is connected by electromagnetic coupling；CapacitanceC P1And inductanceL P1Institute
At the both ends of branch, the output terminal respectively with DC-AC electrical energy transformer circuits is connected, capacitanceC S1And inductanceL S1Place branch
Both ends are connected respectively with the input terminal of rectification circuit；
The series-multiple connection resonance circuit includes capacitanceC P2, inductanceL P2、C S2And inductanceL S2, capacitanceC P2And inductanceL P2It is connected in series,
CapacitanceC S2And inductanceL S2It is connected in parallel, inductanceL P2And inductanceL S2It is connected by electromagnetic coupling；CapacitanceC P2And inductanceL P2Place branch
Output terminal of the both ends on road respectively with DC-AC electrical energy transformer circuits is connected, inductanceL S2Both ends respectively with rectification circuit
Input terminal is connected；
The parallel-serial resonance circuit includes capacitanceC P3, inductanceL P3、C S3And inductanceL S3, capacitanceC P3And inductanceL P3It is connected in parallel,
CapacitanceC S3And inductanceL S3It is connected in series, inductanceL P3And inductanceL S3It is connected by electromagnetic coupling；InductanceL P3Both ends respectively with DC-
The output terminal of AC electrical energy transformer circuits is connected, capacitanceC S3And inductanceL S3The both ends of place branch respectively with rectification circuit
Input terminal is connected；
It is described simultaneously-antiresonant circuit include capacitanceC P4, inductanceL P4、C S4And inductanceL S4, capacitanceC P4And inductanceL P4It is connected in parallel,
CapacitanceC S4And inductanceL S4It is connected in parallel, inductanceL P4And inductanceL S4It is connected by electromagnetic coupling；InductanceL P4Both ends respectively with DC-
The output terminal of AC electrical energy transformer circuits is connected, inductanceL S4Both ends be connected respectively with the input terminal of rectification circuit.
The rectification circuit is voltage doubling rectifing circuit or full-wave rectifying circuit；
The voltage doubling rectifing circuit includes diodeD 41, diodeD 42, capacitanceC 41And capacitanceC 42, diodeD 41And diodeD 42
It is connected in series, capacitanceC 41And capacitanceC 42It is connected in series, diodeD 41And diodeD 42Midpoint, capacitanceC 41And capacitanceC 42In
Point is connected respectively with the output terminal of non-contact transformer；CapacitanceC 41With diodeD 41Connection, capacitanceC 42With diodeD 42Even
It connects, capacitanceC 41With diodeD 41Midpoint, capacitanceC 42With diodeD 42Midpoint be connected respectively with the input terminal of filter circuit
It connects；
The full-wave rectifying circuit includes diodeD 43, diodeD 44, diodeD 45And diodeD 46, diodeD 43With two poles
PipeD 44It is connected in series, diodeD 45And diodeD 46It is connected in series, diodeD 43With diodeD 45Connection, diodeD 44With two
Pole pipeD 46Connection, diodeD 43And diodeD 44Midpoint, diodeD 45And diodeD 46Midpoint respectively with non-contact change
The output terminal of depressor is connected, diodeD 43And diodeD 45Midpoint, diodeD 44And diodeD 46Midpoint respectively with filter
The input terminal of wave circuit is connected.
The filter circuit is the first filter circuit, the second filter circuit, the 3rd filter circuit, the 4th filter circuit, the
Five filter circuits or the 6th filter circuit；
First filter circuit includes capacitanceC 51, the output terminal and capacitance of rectification circuitC 51Both ends be connected, capacitanceC 51's
Both ends are connected with the input terminal of inverter circuit；
Second filter circuit includes inductanceL 51, inductanceL 52And capacitanceC 52, inductanceL 51And inductanceL 52Same Name of Ends respectively with
The output terminal of rectification circuit is connected, inductanceL 51And inductanceL 52Different name end respectively with capacitanceC 52Both ends be connected, inductanceL 51
And inductanceL 52Form mutual inductance circuit, capacitanceC 52Both ends be connected respectively with the input terminal of inverter circuit；
3rd filter circuit includes capacitanceC 53, inductanceL 53, inductanceL 54And capacitanceC 54, capacitanceC 53Both ends respectively with inductanceL 53And inductanceL 54Same Name of Ends be connected, inductanceL 53And inductanceL 54Different name end respectively with capacitanceC 54Both ends be connected, electricity
SenseL 53And inductanceL 54Form mutual inductance circuit, capacitanceC 53It is connected respectively with the output terminal of rectification circuit, capacitanceC 54Both ends difference
It is connected with the input terminal of inverter circuit；
4th filter circuit includes inductanceL 55And capacitanceC 55, inductanceL 55And capacitanceC 55It is connected in series, inductanceL 55And capacitanceC 55It is connected respectively with the output terminal of rectification circuit, capacitanceC 55Both ends be connected respectively with the input terminal of inverter circuit；
5th filter circuit includes capacitanceC 56, inductanceL 56And inductanceL 57, inductanceL 56, capacitanceC 56And inductanceL 57It is sequentially connected in series
Connection, capacitanceC 56Output terminal of the both ends respectively with rectification circuit 4 be connected, inductanceL 56And inductanceL 57Respectively with inverter circuit
Input terminal be connected；
6th filter circuit includes inductanceL 58And capacitanceC 57, inductanceL 58And capacitanceC 57It is connected in series, capacitanceC 57Both ends
It is connected respectively with the output terminal of rectification circuit, inductanceL 58And capacitanceC 57It is connected respectively with the input terminal of inverter circuit.
The inverter circuit is full bridge inversion circuit, Three-phase full-bridge inverter circuit, push-pull inverter or half-bridge
Formula inverter circuit；
The full bridge inversion circuit includes switching tube S61, switching tube S63, switching tube S62With switching tube S64, switching tube S61With open
Close pipe S62It is connected in series to form a branch, switching tube S63With switching tube S64A branch is connected in series to form, two branches are simultaneously
Connection connection；The output terminal of filter circuit and switching tube S61With switching tube S62The branch at place is connected, switching tube S61And switching tube
S62Midpoint, switching tube S63With switching tube S64Output terminal of the midpoint as inverter circuit；
The Three-phase full-bridge inverter circuit includes switching tube S65, switching tube S66, switching tube S67, switching tube S68, switching tube S69
With switching tube S70, switching tube S65With switching tube S66It is connected in series to form a branch, switching tube S67With switching tube S68Series connection connects
It connects to form a branch, switching tube S69With switching tube S70It is connected in series to form a branch, three branch circuit parallel connection connections；Filtering
The output terminal of circuit and switching tube S65With switching tube S66The branch at place is connected, switching tube S65With switching tube S66Midpoint, open
Close pipe S67With switching tube S68Midpoint, switching tube S69With switching tube S70Midpoint respectively as inverter circuit three output terminals；
The push-pull inverter includes inductanceL 61, division inductanceL 62, division inductanceL 63, switching tube S71With switching tube S72,
InductanceL 61Respectively with dividing inductanceL 62With division inductanceL 63It is connected, divides inductanceL 62With division inductanceL 63Using magnetic core coupling
It closes, different name end is connected, division inductanceL 62With switching tube S71It is connected in series, divides inductanceL 63With switching tube S72It is connected in series, divides
InductanceL 62With switching tube S71Series circuit and division inductanceL 63With switching tube S72Series circuit be connected in parallel；InductanceL 61、
Switching tube S77It is connected respectively with the output terminal of filter circuit, divides inductanceL 62With switching tube S71Midpoint, division inductanceL 63With
Switching tube S72Midpoint respectively as inverter circuit output terminal；
The half bridge inverter circuit includes capacitanceC 61, capacitanceC 61, switching tube S73With switching tube S74, capacitanceC 61And capacitanceC 61String
Connection connection forms a branch, switching tube S73With switching tube S74It is connected in series a branch, two branch circuit parallel connection connections；Filtering
The output terminal and capacitance of circuitC 61And capacitanceC 61The both ends of place branch are connected, capacitanceC 61And capacitanceC 62Midpoint, switching tube
S73With switching tube S74Midpoint respectively as inverter circuit output terminal.
A kind of inversion system based on non-contact power technology, including solar cell, half-bridge converter circuit, string-string
Join resonance circuit, voltage doubling rectifing circuit, the first filter circuit and full bridge inversion circuit, the exit point of the solar cell
The capacitance of a and half bridge circuitC 1The capacitance of connection, exit point b and half bridge circuitC 2Connection, the capacitance of half bridge circuitC 1
And capacitanceC 2Midpoint pass through the inductance of endpoint c and string-series resonant circuitL P1Connection, switching tube S1With switching tube S2Midpoint
Pass through endpoint d and capacitanceC P1Connection, capacitanceC S1Pass through endpoint e and the capacitance of voltage doubling rectifing circuitC 41And capacitanceC 42Midpoint connect
It connects, inductanceL S1Pass through endpoint f and the diode of voltage doubling rectifing circuitD 41And diodeD 42Midpoint connection, capacitanceC 41With two poles
PipeD 41Midpoint pass through endpoint g, capacitanceC 42And diodeD 42Midpoint pass through endpoint h capacitances with the first filter circuit respectivelyC 51Both ends connection, capacitanceC 51Both ends pass through endpoint i and the switching tube S of full bridge inversion circuit61With switching tube S63Midpoint
Connection passes through the switching tube S of endpoint j and full bridge inversion circuit62With switching tube S64Midpoint connection, switching tube S63And switch
Pipe S64Midpoint as exit point k, switching tube S61With switching tube S62Midpoint as exit point m.
A kind of inversion system based on non-contact power technology, including solar cell, full-bridge type translation circuit, string-simultaneously
Join resonance circuit, full-wave rectifying circuit, the second filter circuit and Three-phase full-bridge inverter circuit, the output of the solar cell
The switching tube S of endpoint a and full-bridge type translation circuit3Connection, the switching tube S of exit point b and full-bridge type translation circuit4Connection, entirely
The switching tube S of bridge inverter main circuit5With switching tube S6Midpoint pass through the capacitance of endpoint c and series-multiple connection resonance circuitC P2Connection,
Switching tube S3With switching tube S4Midpoint pass through endpoint d and inductanceL P2Connection, capacitanceC S2One end pass through endpoint e and full-wave rectification
The diode of circuitD 43And diodeD 44Midpoint connection, capacitanceC S2The other end pass through endpoint f and full-wave rectifying circuit two
Pole pipeD 45And diodeD 46Midpoint connection, diodeD 43And diodeD 45Midpoint pass through endpoint g and the second filter circuit
InductanceL 51Same Name of Ends connects, diodeD 44And diodeD 46Midpoint pass through endpoint h and the inductance of the second filter circuitL 52It is of the same name
End connection, capacitanceC 52Both ends pass through the switching tube S of endpoint i and Three-phase full-bridge inverter circuit65With switching tube S66Place branch
The both ends on road are connected, switching tube S69With switching tube S70Midpoint as exit point k, switching tube S67With switching tube S68In
Point is as exit point m, switching tube S65With switching tube S66Midpoint as exit point n.
A kind of detection method of the inversion system based on non-contact power technology, its step are as follows：
Step 1：The output voltage of inverter circuitu oThrough the filtering of voltage signal detection circuit voltage signal is obtained with decompressionu os, the
One signal processing circuit is by the voltage signal of positive and negative alternationu osTwo-way is divided to be multiplied, obtains permanent positive signalx u(t), thenx u(t)=k 1·u os 2=k 1·(|u os|sinα)2, the first signal processing circuit is by signalx u(t) it is transmitted to inverter control circuit；Whereink 1For
Constant；
Step 2：Inverter control circuit is by signalx u(t) be converted into digital quantity and be stored in memory；Inside inverter control circuit
Memory in take out signalk 1·u os 2BeforeT 1/ 4 waveformk 1·[|u os|sin(α+90)]2Corresponding digital quantity, according to
sin2(α)+sin2The two is added to obtain output voltage by the principle of (+90 ° of α)=1u oSquare of average value：=k 1·k 2·
{(|u os|sinα)2+[|u os|sin(α+90)]2, wherein,k 2For constant coefficient,T 1For voltage signalu osCycle；
Step 3：Ify u(t)= ,e u (t)= , by signalx u(t) equal interval sampling and sequence is stored as, Mei Gegong
Sample frequency is set as 400 times in the frequency cycle, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR filtering
Device：
e u (t) = a0·x u(t)+ a100·x u(t-100·T S) + a400·x u(t-400·T S)+ a500·x u(t-
500·T S)
= x u(t)+ x u(t-100·T S)-x u(t-400·T S)-x u(t-500·T S)；
y u (t) = a0·x u(t)+ a100·x u(t-100·T S) = x u(t)+ x u(t-100·T S)；
Wherein, coefficient a0=a100=1, a400=a500= -1；
Under normal operating conditions, average voltage variation is smaller, changes differencee u (t)=maintain always 0V2Left and right；Work as system
When there is apparent Voltage Drop, differencee u(t)=can strongly reduce negative value, and signaly u(t) drastically decline；
Step 4：The output current of inverter circuiti oElectric current is changed into voltage signal through galvanic electricity signal deteching circuitu ios, second
Signal processing circuit is by the voltage signal of positive and negative alternationu iosTwo-way is divided to be multiplied, obtains permanent positive signalx i(t), thenx i(t)=k 3·u ios 2= k 3·(|u ios|sinα)2；Secondary signal process circuit is by signalx i(t), it is transmitted to inverter control circuit；Inversion
Control circuit is by signalx i(t) be converted into digital quantity and be stored in memory；It is taken out from the memory inside inverter control circuit
Signalx i(t) beforeT 1The waveform at/4 momentk 3·[|u ios|sin(α+90)]2Corresponding digital quantity, obtains output currenti oIt is flat
Mean square：=k 3·k 4·{(|u ios|sinα)2+[|u ios|sin(α+90)]2, wherein,k 3、k 4For constant coefficient；
Step 5：Ify i(t)= ,e i(t)=, by signalx i(t) equal interval sampling and sequence is stored as, Mei Gegong
Sample frequency is set as 400 times in the frequency cycle, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR filtering
Device：
e i (t) = a0·x i(t)+ a100·x i(t-100·T S) + a400·x i(t-400·T S)+ a500·x i(t-
500·T S)
= x i(t)+ x i(t-100·T S)-x i(t-400·T S)-x i(t-500·T S)；
y i (t) = a0·x i(t)+ a100·x i(t-100·T S) = x i(t)+ x i(t-100·T S)；
Wherein, a0=a100=1, a400=a500= -1；When there is current surge, signale i(t) become positive value and signaly i(t)
It steeply rises；Due to signale(t) be not in delay distortion, signale i(t) become positive value can determine whether for electric current increase.
Beneficial effects of the present invention：The electric energy that solar cell is sent is transformed into alternating current, is passed through non-contact transformer
Rectifying and wave-filtering after energy is passed, then industrial-frequency alternating current is reverse by inverter circuit, supplies load thereafter using or by energy transmission
To power grid；Compare single-level circuit due to forming two-stage circuit its control strategy using DC-AC electrical energy transformers circuit and inverter circuit
Simply；Wherein the air gap of non-contact transformer is more than 2mm, and primary coil is not directly contacted with secondary coil, among air gap
Roofing surface layer or metope waterproof material can be accommodated.Compared with traditional circuit, the present invention can save solar cell introducing and build
Build the conducting wire of object or structures；Due to no lead-in conductor, solar panels can also serve as waterproof material.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the time-domain FIR filter of the present invention.
Fig. 3 is output voltage sample waveform of the present invention and numerical computations waveform schematic diagram.
Fig. 4 is the signal waveform schematic diagram that output voltage of the present invention falls.
Fig. 5 is the signal waveform schematic diagram that the output current of the present invention increases severely.
Fig. 6 is that the circuit diagram of scheme can be selected in the DC-AC electrical energy transformer circuits of the present invention.
Fig. 7 is that the circuit diagram of scheme can be selected in the non-contact transformer of the present invention.
Fig. 8 is that the circuit diagram of scheme can be selected in the rectification circuit of the present invention.
Fig. 9 is that the circuit diagram of scheme can be selected in the filter circuit of the present invention.
Figure 10 is that the circuit diagram of scheme can be selected in the inverter circuit of the present invention.
Figure 11 is the structure diagram that the present invention selects first scheme.
Figure 12 is the structure diagram that the present invention selects alternative plan.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of not making the creative labor
Embodiment belongs to the scope of protection of the invention.
As shown in Figure 1, a kind of inversion system based on non-contact power technology, including solar cell 1, DC-AC electric energy
Converter circuit 2, non-contact transformer 3, rectification circuit 4, filter circuit 5 and inverter circuit 6, solar cell 1 and DC-AC electricity
Can converter circuit 2 be connected, DC-AC electrical energy transformers circuit 2 is connected with non-contact transformer 3, non-contact transformer 3 and
Rectification circuit 4 is connected, and rectification circuit 4 is connected with filter circuit 5, and filter circuit 5 is connected with inverter circuit 6.It is described non-
Contact transformer 3 includes the primary coil and secondary coil that intercouple, and it is big that length is equipped between primary coil and secondary coil
In 2mm, the gap of roofing surface layer or metope waterproof material can be accommodated.The DC-AC electrical energy transformers circuit 2 is by solar cell
1 obtained direct current is changed into alternating current, and the primary coil through non-contact transformer 3 transfers energy to secondary in a non contact fashion
Coil, secondary coil obtain alternating current and pass to rectification circuit 4 and filter circuit 5 and carry out rectifying and wave-filtering to obtain direct current, then by
Inverter circuit 6 is reverse into stable industrial-frequency alternating current, and the load supplied thereafter uses or transmit energy to power grid.
The electric energy that solar cell 1 is sent is transformed into the alternating current of 20 more than kHz by the present invention, through non-contact transformer
Rectifying and wave-filtering after energy is transferred, then is reverse by inverter circuit 6 alternating current of power frequency 50 Hz or 60 Hz, supplies load thereafter
Using or transmit energy to power grid.Wherein, the air gap of non-contact transformer is more than 2mm, primary coil and secondary coil
It is not directly contacted with, roofing surface layer or metope waterproof material can be accommodated among air gap.
Further include converter control circuit 111 and inverter control circuit 112, converter control circuit 111 and DC-AC electric energy
Converter circuit 2 is connected；The inverter control circuit 112 is connected with inverter circuit 6, and inverter circuit 6 is believed respectively with voltage
Number detection circuit 13 is connected with current signal detection circuit 14,13 and first signal processing circuit of voltage signal detection circuit
115 are connected, and the first signal processing circuit 115 is connected with inverter control circuit 112, current signal detection circuit 14 and second
Signal processing circuit 116 is connected, and secondary signal process circuit 116 is connected with inverter control circuit 112；The voltage signal
Detection circuit 113 is by output voltageu oIt is changed into low AC voltage signalu os, current detection circuit 114 is by output currenti oTransformation
For low AC voltage signalu ios, by treated, signal sends the first signal processing circuit to voltage signal detection circuit 113
115, current signal detection circuit 114 will treated sends secondary signal process circuit 116, the first signal processing circuit to
115 will treated signalx u(t) sending inverter control circuit 112 to, secondary signal process circuit 116 will treated signalx i(t) send inverter control circuit 112 to.
Grid-connected inverting system is commonly encountered Voltage Drop phenomenon in operation, these phenomenons are not if taken corresponding reply to arrange
It applies, easily grid-connected inverting system is caused to be damaged.Since the output of grid-connected inverting system is alternating current, alternating voltage and current signal
Changing rule lack intuitive, and the A/D sample ports of controller are typically only capable to detection positive half-wave signal, judge instantaneous occur
Voltage Drop phenomenon have certain difficulty.Therefore, to the detection speed of output voltage and output current largely
Decide that reaction speed and the performance of inversion system are good and bad.
Grid collapses cause grid-connected inverting system output voltage to fall detection method：Virtual value calculating method, amplitude
Calculating method, discrete fourier algorithm are examined based on synchronous reference coordinate system phaselocked loop detection method, other methods and in island effect
Subsidiary detection method in survey.Wherein, virtual value calculating method needs the time of half period（10 ms）, both approaches reaction
Overlong time, grid-connected inverting system is possible to collapse even damage before no testing result；Though discrete fourier algorithm
Voltage Drop so can be quickly detected, but this method formula is complicated and computationally intensive, and the real-time of calculating cannot be guaranteed；It is based on
The hardware configuration complexity and technical solution of synchronous reference coordinate system phaselocked loop detection method are simultaneously immature.
Amplitude calculating method is according to sin2(α)+sin2The operation principle of (+90 ° of α)=1, by signal (|u os|sinα)2With letter
Number [|u os|sin(α+90)]2Being added can obtain stable DC quantity, and the DC quantity and output voltageu oVirtual value correspond to
It is proportional.The voltage of positive and negative alternation, current signal can be transformed into permanent positive signal by the program, with discrete fourier algorithm phase
Than reducing multiplication number and iterative algorithm number, improving detection speed.
Traditional amplitude calculating method is suitable for parallel network reverse voltage close to the situation of sine wave, voltage magnitudeU CALMeter
Formula is represented by：
。
Amplitude computational algorithm has the shortcomings that its is intrinsic, and result of calculation has larger fluctuating error when distorting.This
Invention proposes the forward difference amplitude calculating method of this method on the basis of traditional amplitude calculating method, by signal and a upper week
The signal subtraction at the correspondence moment that the phase obtains, obtains the difference of two DC quantities, which is current time and upper a cycle
The increment of the voltage magnitude square at corresponding moment.By difference and voltage magnitude comprehensive analysis, can more judge in time and exactly
Output voltage abnormal phenomenon.
The present invention may be employed virtual value calculating method, amplitude calculating method, discrete fourier algorithm, based on synchronous reference coordinate
It is phaselocked loop detection method, other methods and subsidiary detection method in island effect detection.According to forward difference amplitude
Calculating method, a kind of detection method of the inversion system based on non-contact power technology, its step are as follows：
Step 1：The output voltage of inverter circuit 6u oThrough the filtering of voltage signal detection circuit 113 voltage signal is obtained with decompressionu os, the first signal processing circuit 115 can be selected multiplier, and the first signal processing circuit 115 is by the voltage signal of positive and negative alternationu os
Two-way is divided to be multiplied, obtains permanent positive signalx u(t), thenx u(t)=k 1·u os 2=k 1·(|u os|sinα)2, the first signal processing electricity
Road 115 is by signalx u(t) it is transmitted to inverter control circuit 112；Whereink 1For constant.
Step 2：Inverter control circuit 112 is by signalx u(t) be converted into digital quantity and be stored in memory；From inversion control
Signal is taken out in memory inside circuit 112k 1·u os 2BeforeT 1/ 4 waveformk 1·[|u os|sin(α+90)]2Corresponding number
Word amount, according to sin2(α)+sin2The two is added to obtain output voltage by the principle of (+90 ° of α)=1u oSquare of average value：=k 1·k 2·{(|u os|sinα)2+[|u os|sin(α+90)]2, wherein,k 2For constant coefficient,T 1For voltage signalu osCycle；For
DC quantity, it is unrelated with the phase angle of trigonometric function.
Step 3：Ify u(t)= ,e u (t)= , by signalx u(t) equal interval sampling and sequence is stored as, often
Sample frequency is set as 400 times in a power frequency period, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR
Wave filter：
e u (t) = a0·x u(t)+ a100·x u(t-100·T S) + a400·x u(t-400·T S)+ a500·x u(t-
500·T S)
= x u(t)+ x u(t-100·T S)-x u(t-400·T S)-x u(t-500·T S)；
y u (t) = a0·x u(t)+ a100·x u(t-100·T S) = x u(t)+ x u(t-100·T S)；
Wherein, coefficient a0=a100=1, a400=a500=-1,x u(t) digital quantity isx u500,x u(t-100·T S) digital quantity bex u400,x u(t-400·T S) digital quantity bex u100,x u(t-500·T S) digital quantity bex u0, whenx u(t) it is specific time
Particular value and equal to digital quantityx u500, thenx u(t-100·T S) bex u(t) lagT 1/ 4 particular values and equal to digital quantityx u400,x u(t-400·T S) bex u(t) lagT 1Particular value and equal to digital quantityx u100,x u(t-500·T S) bex u(t) lag
5T 1/ 4 particular values and equal to digital quantityx u0。
Signalx u(t) and signaly u(t) sampling parameter calculate schematic diagram it is as shown in Figure 3.Under normal operating conditions, voltage is put down
Change in Mean is smaller, changes differencee u (t)= Always 0V is maintained2Left and right；When there is apparent Voltage Drop in system,
Differencee u(t)= Negative value, and signal can be strongly reducedy u(t) drastically decline.The two features are combined can be clear
There is Voltage Drop in ground judgement.The signal schematic representation of Voltage Drop is as shown in Figure 4.
Step 4：The output current of inverter circuit 6i oElectric current is changed into voltage signal through galvanic electricity signal deteching circuit 114u ios, secondary signal process circuit 116 can select multiplier, and secondary signal process circuit 116 is by the voltage signal of positive and negative alternationu iosTwo-way is divided to be multiplied, obtains permanent positive signalx i(t), thenx i(t)=k 3·u ios 2= k 3·(|u ios|sinα)2；Second letter
Number process circuit 116 is by signalx i(t), it is transmitted to inverter control circuit 112；Inverter control circuit 112 is by signalx i(t) conversion
Into digital quantity and it is stored in memory；Signal is taken out from the memory inside inverter control circuit 112x i(t) beforeT 1/ 4 moment
Waveformk 3·[|u ios|sin(α+90)]2Corresponding digital quantity, obtains output currenti oMean square：=k 3·k 4·{(|u ios|sinα)2+[|u ios|sin(α+90)]2, wherein,k 3、k 4For constant coefficient；For DC quantity, the phase with trigonometric function
Parallactic angle is unrelated.
Step 5：The method of step 3 is repeated to signalx i(t) carry out processing can obtain output currenti oCorresponding signale i
(t) and signaly i(t)；Ify i(t)= ,e i(t)= , by signalx i(t) equal interval sampling and sequence is stored as, often
Sample frequency is set as 400 times in a power frequency period, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR
Wave filter：
e i (t) = a0·x i(t)+ a100·x i(t-100·T S) + a400·x i(t-400·T S)+ a500·x i(t-
500·T S)
= x i(t)+ x i(t-100·T S)-x i(t-400·T S)-x i(t-500·T S)；
y i (t) = a0·x i(t)+ a100·x i(t-100·T S) = x i(t)+ x i(t-100·T S)；
Wherein, a0=a100=1, a400=a500=-1,x i(t) digital quantity isx i500,x i(t-100·T S) digital quantity bex i400,x i(t-400·T S) digital quantity bex i100,x i(t-500·T S) digital quantity bex i0, whenx i(t) it is specific time
Particular value and equal to digital quantityx i500, thenx i(t-100·T S) bex i(t) lagT 1/ 4 particular values and equal to digital quantityx i400,x i(t-400·T S) bex i(t) lagT 1Particular value and equal to digital quantityx i100,x i(t-500·T S) bex i(t) lag
5T 1/ 4 particular values and equal to digital quantityx i0。
When there is current surge, signale i(t) become positive value and signaly i(t) steeply rise；Due to signale(t) will not
There is delay distortion, signale i(t) become positive value can determine whether for electric current increase.The two features, which are combined, clearly to be judged
There is electric current increase.The signal schematic representation that output current increases severely is as shown in Figure 5.
The DC-AC electrical energy transformers circuit 2 is half-bridge converter circuit 21, full-bridge type translation circuit 22, push-pull type become
Circuit 23 or push-pull type self-sustaining translation circuit 24 are changed, as shown in Figure 6.
Such as Fig. 6（a）Shown, the half-bridge converter circuit 21 includes capacitanceC 1, capacitanceC 2, switching tube S1With switching tube S2,
CapacitanceC 1And capacitanceC 2Branch and switching tube S after being connected in series1With switching tube S2The branch circuit parallel connection connection being connected in series, capacitanceC 1
And capacitanceC 2The both ends of place branch be connected with the output terminal of solar cell 1, capacitanceC 1And capacitanceC 2Midpoint, switch
Pipe S1With switching tube S2Input terminal of the midpoint respectively with non-contact transformer 3 be connected.The exit point a of solar cell 1 and
The capacitance of half bridge circuitC 1, switching tube S1It is connected, the exit point b and capacitance of solar cell 1C 2, switching tube S2It is connected
It connects；CapacitanceC 1, capacitanceC 2Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformer 3 between endpoint d points, open
Close pipe S1, switching tube S2Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformer 3 between endpoint c.
Such as Fig. 6（b）Shown, the full-bridge type translation circuit 22 includes switching tube S3, switching tube S4, switching tube S5And switch
Pipe S6, switching tube S3With switching tube S4Branch and switching tube S after being connected in series5With switching tube S6The branch circuit parallel connection being connected in series connects
It connects, switching tube S3With switching tube S4Output terminal of the both ends of place branch respectively with solar cell 1 is connected, switching tube S3With
Switching tube S4Midpoint, switching tube S5With switching tube S6Input terminal of the midpoint respectively with non-contact transformer 3 be connected.The sun
Can battery 1 exit point a respectively with switching tube S3, switching tube S5It is connected, the exit point b and switching tube of solar cell 1
S4, switching tube S6It is connected；Switching tube S3With switching tube S4Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformation
Endpoint d between device 3, switching tube S5With switching tube S6Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformer 3
Between endpoint c.
Such as Fig. 6（c）Shown, the push-pull type translation circuit 23 includes inductanceL 1, division inductanceL 2, division inductanceL 3, switch
Pipe S7With switching tube S8, inductanceL 1Respectively with dividing inductanceL 2With division inductanceL 3It is connected, divides inductanceL 2With division inductanceL 3
It is coupled using magnetic core, different name end is connected, division inductanceL 2With switching tube S7It is connected in series, divides inductanceL 3With switching tube S8Series connection
Connection, switching tube S8With switching tube S7It is connected in parallel, inductanceL 1, switching tube S7The output terminal with solar cell 1 is connected respectively
It connects, divides inductanceL 2With switching tube S7Midpoint, division inductanceL 3With switching tube S8Midpoint respectively with non-contact transformer 3
Input terminal is connected.The exit point a and inductance of solar cell 1L 1It is connected, the exit point b of solar cell 1 and opens
Close pipe S7, switching tube S8It is connected；Divide inductanceL 2With switching tube S7Midpoint connection DC-AC electrical energy transformers circuit 2 connect with non-
Endpoint d between thixotroping depressor 3 divides inductanceL 3With switching tube S8Midpoint connection DC-AC electrical energy transformers circuit 2 connect with non-
Endpoint c between thixotroping depressor 3.
Such as Fig. 6（d）Shown, the push-pull type self-sustaining translation circuit 24 includes inductanceL 4, division inductanceL 5, division inductanceL 6, resistanceR 1, resistanceR 2, capacitanceC 3, capacitanceC 4, switching tube S9With switching tube S10, inductanceL 4Respectively with dividing inductanceL 5, division electricity
SenseL 6It is connected, divides inductanceL 5With division inductanceL 6It is coupled using magnetic core, different name end is connected；Divide inductanceL 5With switching tube S9String
Connection connection, divides inductanceL 6With switching tube S10It is connected in series；Divide inductanceL 5With switching tube S9Midpoint respectively with capacitanceC 3With electricity
ResistanceR 1It is connected, capacitanceC 3With resistanceR 1It is connected in parallel rear and switching tube S10Base stage be connected, divide inductanceL 6With switching tube S10
Midpoint respectively with capacitanceC 4With resistanceR 2It is connected, capacitanceC 4With resistanceR 2It is connected in parallel rear and switching tube S9Base stage be connected
It connects, divides inductanceL 5With switching tube S9Series circuit and division inductanceL 6With switching tube S10Series circuit be connected in parallel；InductanceL 4, switching tube S9The output terminal with solar cell 1 is connected respectively, divides inductanceL 5With switching tube S9Midpoint, division inductanceL 6With switching tube S10Input terminal of the midpoint respectively with non-contact transformer 3 be connected.The exit point a of solar cell 1 and
InductanceL 4It is connected, the exit point b of solar cell 1 and switching tube S9, switch S10It is connected；Divide inductanceL 5With switching tube
S9Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformer 3 between endpoint d, divide inductanceL 6With switching tube
S10Midpoint connection DC-AC electrical energy transformers circuit 2 and non-contact transformer 3 between endpoint c.
As shown in fig. 7, the non-contact transformer 3 includes compensation circuit, non-contact transformer 3 is string-series resonance
Circuit 31, series-multiple connection resonance circuit 32, parallel-serial resonance circuit 33 or simultaneously-antiresonant circuit 34.
Such as Fig. 7（a）Shown, the string-series resonant circuit 31 includes capacitanceC P1, inductanceL P1, capacitanceC S1And inductanceL S1,
CapacitanceC P1And inductanceL P1It is connected in series, capacitanceC S1And inductanceL S1It is connected in series, inductanceL P1And inductanceL S1Connected by electromagnetic coupling
It connects；CapacitanceC P1And inductanceL P1Output terminal of the both ends of place branch respectively with DC-AC electrical energy transformers circuit 2 is connected, capacitanceC S1And inductanceL S1Input terminal of the both ends of place branch respectively with rectification circuit 4 is connected.Endpoint c and capacitanceC P1It is connected,
Endpoint d points and inductanceL P1It is connected；Endpoint e and capacitance between non-contact transformer 3 and rectification circuit 4C S1It is connected, it is non-to connect
Endpoint f and inductance between thixotroping depressor 3 and rectification circuit 4L s1It is connected.
Such as Fig. 7（b）Shown, the series-multiple connection resonance circuit 32 includes capacitanceC P2, inductanceL P2、C S2And inductanceL S2, capacitanceC P1And inductanceL P1It is connected in series, capacitanceC S2And inductanceL S2It is connected in parallel, inductanceL P2And inductanceL S2It is connected by electromagnetic coupling；Electricity
HoldC P2And inductanceL P2Output terminal of the both ends of place branch respectively with DC-AC electrical energy transformers circuit 2 is connected, inductanceL P2's
Input terminal of the both ends respectively with rectification circuit 4 is connected.Endpoint c and capacitanceC P2It is connected, endpoint d points and inductanceL P2It is connected；
The endpoint f points minute between endpoint e points, non-contact transformer 3 and rectification circuit 4 between non-contact transformer 3 and rectification circuit 4
Other and capacitanceC S2With inductanceL S2Midpoint be connected.
Such as Fig. 7（c）Shown, the parallel-serial resonance circuit 33 includes capacitanceC P3, inductanceL P3、C S3And inductanceL S3, capacitanceC P3And inductanceL P3It is connected in parallel, capacitanceC S3And inductanceL S3It is connected in series, inductanceL P3And inductanceL S3It is connected by electromagnetic coupling；Electricity
SenseL P3Output terminal of the both ends respectively with DC-AC electrical energy transformers circuit 2 be connected, capacitanceC S3And inductanceL S3Place branch
Input terminal of the both ends respectively with rectification circuit 4 is connected.Endpoint c, endpoint d points are respectively and capacitanceC P3With inductanceL P3Midpoint phase
Connection；Endpoint e and capacitance between non-contact transformer 3 and rectification circuit 4C S3It is connected, non-contact transformer 3 and rectified current
Endpoint f and inductance between road 4L s3It is connected.
Such as Fig. 7（d）It is shown, it is described simultaneously -34 capacitance of antiresonant circuitC P4, inductanceL P4、C S4And inductanceL S4, capacitanceC P4With
InductanceL P4It is connected in parallel, capacitanceC S4And inductanceL S4It is connected in parallel, inductanceL P4And inductanceL S4It is connected by electromagnetic coupling；InductanceL P4
Output terminal of the both ends respectively with DC-AC electrical energy transformers circuit 2 be connected, inductanceL S4Both ends respectively with rectification circuit 4
Input terminal is connected.Endpoint c, endpoint d and capacitanceC P4With inductanceL P4Midpoint be connected, endpoint e, endpoint f and capacitanceC S4With
InductanceL S4Midpoint be connected.
As shown in figure 8, the rectification circuit 4 is voltage doubling rectifing circuit 41 or full-wave rectifying circuit 42.
Such as Fig. 8（a）Shown, the voltage doubling rectifing circuit 41 includes diodeD 41, diodeD 42, capacitanceC 41And capacitanceC 42,
DiodeD 41And diodeD 42It is connected in series, capacitanceC 41And capacitanceC 42It is connected in series, diodeD 41And diodeD 42Midpoint,
CapacitanceC 41And capacitanceC 42Output terminal of the midpoint respectively with non-contact transformer 3 be connected；CapacitanceC 41With diodeD 41Connection,
CapacitanceC 42With diodeD 42Connection, capacitanceC 41With diodeD 41Midpoint, capacitanceC 42With diodeD 42Midpoint respectively with filter
The input terminal of wave circuit 5 is connected.Endpoint e and capacitanceC 41, capacitanceC 42Midpoint be connected, endpoint f and diodeD 41, two poles
PipeD 42Midpoint be connected, endpoint g and capacitance between rectification circuit 4 and filter circuit 5C 41With diodeD 41Midpoint be connected
It connects；Endpoint h and capacitance between rectification circuit 4 and filter circuit 5C 42With diodeD 42Midpoint be connected.
Such as Fig. 8（b）Shown, the full-wave rectifying circuit 42 includes diodeD 43, diodeD 44, diodeD 45With two poles
PipeD 46, diodeD 43And diodeD 44It is connected in series, diodeD 45And diodeD 46It is connected in series, diodeD 43With diodeD 45Connection, diodeD 44With diodeD 46Connection, diodeD 43And diodeD 44Midpoint, diodeD 45And diodeD 46's
Output terminal of the midpoint respectively with non-contact transformer 3 is connected, diodeD 43And diodeD 45Midpoint, diodeD 44With two
Pole pipeD 46Input terminal of the midpoint respectively with filter circuit 5 be connected.Endpoint e and diodeD 43, diodeD 44Midpoint be connected
It connects, endpoint f and diodeD 45, diodeD 46Midpoint be connected, the endpoint g and two between rectification circuit 4 and filter circuit 5
Pole pipeD 43, diodeD 45Cathode be connected；Endpoint h and diode between rectification circuit 4 and filter circuit 5D 44, diodeD 46Anode be connected.
As shown in figure 9, the filter circuit 5 is the first filter circuit 51, the second filter circuit 52, the 3rd filter circuit
53rd, the 4th filter circuit 54, the 5th filter circuit 55 or the 6th filter circuit 56.
Such as Fig. 9（a）Shown, first filter circuit 51 includes capacitanceC 51, the output terminal and capacitance of rectification circuit 4C 51
Both ends be connected, capacitanceC 51Both ends be connected with the input terminal of inverter circuit 6.Endpoint g and endpoint i and capacitanceC 51One
End is connected, endpoint h and endpoint j and capacitance between filter circuit 5 and inverter circuit 6C 51The other end be connected.
Such as Fig. 9（b）Shown, second filter circuit 52 includes inductanceL 51, inductanceL 52And capacitanceC 52, inductanceL 51And electricity
SenseL 52Output terminal of the Same Name of Ends respectively with rectification circuit 4 be connected, inductanceL 51And inductanceL 52Different name end respectively with capacitanceC 52
Both ends be connected, inductanceL 51And inductanceL 52Form mutual inductance circuit, capacitanceC 52The both ends input terminal with inverter circuit 6 respectively
It is connected.Endpoint g and inductanceL 51Same Name of Ends be connected, endpoint h and inductanceL 52Same Name of Ends be connected, capacitanceC 52Both ends
The endpoint i between filter circuit 5 and inverter circuit 6 and endpoint j are connected respectively.
Such as Fig. 9（c）Shown, the 3rd filter circuit 53 includes capacitanceC 53, inductanceL 53, inductanceL 54And capacitanceC 54, capacitanceC 53Both ends respectively with inductanceL 53And inductanceL 54Same Name of Ends be connected, inductanceL 53And inductanceL 54Different name end respectively with capacitanceC 54Both ends be connected, inductanceL 53And inductanceL 54Form mutual inductance circuit, capacitanceC 53The output terminal with rectification circuit 4 is connected respectively
It connects, capacitanceC 54Input terminal of the both ends respectively with inverter circuit 6 be connected.Endpoint g and capacitanceC 53One end and inductanceL 53's
Same Name of Ends is connected, endpoint h and capacitanceC 53One end and inductanceL 54Same Name of Ends be connected, capacitanceC 54Both ends respectively with
Endpoint i and endpoint j between filter circuit 5 and inverter circuit 6 are connected.
Such as Fig. 9（d）Shown, the 4th filter circuit 54 includes inductanceL 55And capacitanceC 55, inductanceL 55And capacitanceC 55Series connection
Connection, inductanceL 55And capacitanceC 55The output terminal with rectification circuit 4 is connected respectively, capacitanceC 55Both ends respectively with inverter circuit 6
Input terminal be connected.Endpoint g and inductanceL 55One end be connected, endpoint i and electricity between filter circuit 5 and inverter circuit 6
SenseL 55The other end and capacitanceC 55One end be connected, the endpoint j between endpoint h and filter circuit 5 and inverter circuit 6 with
CapacitanceC 55The other end be connected.
Such as Fig. 9（e）Shown, the 5th filter circuit 55 includes capacitanceC 56, inductanceL 56And inductanceL 57, inductanceL 56, capacitanceC 56And inductanceL 57It is sequentially connected in series, capacitanceC 56Output terminal of the both ends respectively with rectification circuit 4 be connected, inductanceL 56And electricity
SenseL 57The input terminal with inverter circuit 6 is connected respectively.CapacitanceC 56Both ends be connected respectively with endpoint g and endpoint h, filter
Endpoint i and inductance between circuit 5 and inverter circuit 6L 56Different name end be connected, between filter circuit 5 and inverter circuit 6
Endpoint j and inductanceL 57Different name end be connected, inductanceL 56And inductanceL 57Form mutual inductance circuit.
Such as Fig. 9（f）Shown, the 6th filter circuit 56 includes inductanceL 58And capacitanceC 57, inductanceL 58And capacitanceC 57Series connection
Connection, capacitanceC 57Output terminal of the both ends respectively with rectification circuit 4 be connected, inductanceL 58And capacitanceC 57Respectively with inverter circuit 6
Input terminal be connected.Endpoint g and inductanceL 58One end and capacitanceC 57One end be connected, filter circuit 5 and inverter circuit
Endpoint i and inductance between 6L 58The other end be connected, the j points between endpoint h points and filter circuit 5 and inverter circuit 6 with electricity
HoldC 57The other end be connected.
As shown in Figure 10, the inverter circuit 6 is full bridge inversion circuit 61, Three-phase full-bridge inverter circuit 62, recommends
Formula inverter circuit 63 or half bridge inverter circuit 64.
Such as Figure 10（a）Shown, the full bridge inversion circuit 61 includes switching tube S61, switching tube S63, switching tube S62With open
Close pipe S64, switching tube S61With switching tube S62It is connected in series to form a branch, switching tube S63With switching tube S64It is connected in series shape
Into a branch, two branch circuit parallel connection connections；The output terminal of filter circuit 5 and switching tube S61With switching tube S62The branch at place
It is connected, switching tube S61With switching tube S62Midpoint, switching tube S63With switching tube S64Output of the midpoint as inverter circuit 6
End.Endpoint i and switching tube S61, switching tube S63It is connected, endpoint j and switching tube S62, switching tube S64It is connected；Switching tube S61With
Switching tube S62Midpoint connection inverter circuit 6 exit point m, switching tube S63With S64Midpoint connection inverter circuit 6 output
Endpoint k.
Such as Figure 10（b）Shown, the Three-phase full-bridge inverter circuit 62 includes switching tube S65, switching tube S66, switching tube
S67, switching tube S68, switching tube S69With switching tube S70, switching tube S65With switching tube S66A branch is connected in series to form, is switched
Pipe S67With switching tube S68It is connected in series to form a branch, switching tube S69With switching tube S70It is connected in series to form a branch, three
A branch circuit parallel connection connection；The output terminal of filter circuit 5 and switching tube S65With switching tube S66The branch at place is connected, switching tube
S65With switching tube S66Midpoint, switching tube S67With switching tube S68Midpoint, switching tube S69With switching tube S70Midpoint make respectively
For three output terminals of inverter circuit 6.Endpoint i and switching tube S65, switching tube S67, switching tube S69It is connected, endpoint j and switch
Pipe S66, switching tube S68, switching tube S70It is connected；Switching tube S65With switching tube S66Midpoint connection inverter circuit 6 output terminal
Point n, switching tube S67With switching tube S68Midpoint connection inverter circuit 6 exit point m, switching tube S69With switching tube S70In
The exit point k of point connection inverter circuit 6.
Such as Figure 10（c）Shown, the push-pull inverter 63 includes inductanceL 61, division inductanceL 62, division inductanceL 63、
Switching tube S71With switching tube S72, inductanceL 61Respectively with dividing inductanceL 62With division inductanceL 63It is connected, divides inductanceL 62With point
Split inductanceL 63It is coupled using magnetic core, different name end is connected, division inductanceL 62With switching tube S71It is connected in series, divides inductanceL 63With opening
Close pipe S72It is connected in series, divides inductanceL 62With switching tube S71Series circuit and division inductanceL 63With switching tube S72Series electrical
Road is connected in parallel；InductanceL 61, switching tube S77The output terminal with filter circuit 5 is connected respectively, divides inductanceL 62With switching tube S71
Midpoint, division inductanceL 63With switching tube S72Midpoint respectively as inverter circuit 6 output terminal.Endpoint i and inductanceL 61It is connected
It connects, endpoint j and switching tube S71, switching tube S72It is connected；Divide inductanceL 62With switching tube S71Midpoint connection inverter circuit 6
Exit point m divides inductanceL 63With switching tube S72Midpoint connection inverter circuit 6 exit point k.
Such as Figure 10（d）Shown, the half bridge inverter circuit 64 includes capacitanceC 61, capacitanceC 61, switching tube S73And switching tube
S74, capacitanceC 61And capacitanceC 61It is connected in series to form a branch, switching tube S73With switching tube S74It is connected in series a branch, two
A branch circuit parallel connection connection；The output terminal and capacitance of filter circuit 5C 61And capacitanceC 61The both ends of place branch are connected, capacitanceC 61
And capacitanceC 62Midpoint, switching tube S73With switching tube S74Midpoint respectively as inverter circuit 6 output terminal.Endpoint i and capacitanceC 61, switching tube S73It is connected, endpoint j and capacitanceC 62, switching tube S74It is connected；CapacitanceC 61, capacitanceC 62Midpoint connection inversion
The exit point m of circuit 6, switching tube S73、S74Midpoint connection inverter circuit 6 exit point k.
Embodiment one
As shown in figure 11, a kind of inversion system based on non-contact power technology, including solar cell 1, half-bridge converter electricity
Road 21, string-series resonant circuit 31, voltage doubling rectifing circuit 41, the first filter circuit 51 and full bridge inversion circuit 61, it is described too
The capacitance of the exit point a and half bridge circuit 21 of positive energy battery 1C 1Connection, the capacitance of exit point b and half bridge circuit 21C 2
Connection, the capacitance of half bridge circuit 21C 1And capacitanceC 2Midpoint pass through the inductance of endpoint c and string-series resonant circuit 31L P1Even
It connects, switching tube S1With switching tube S2Midpoint pass through endpoint d and capacitanceC P1Connection, capacitanceC S1Pass through endpoint e and voltage multiplying rectifier electricity
The capacitance on road 41C 41And capacitanceC 42Midpoint connection, inductanceL S1Pass through endpoint f and the diode of voltage doubling rectifing circuit 41D 41With two
Pole pipeD 42Midpoint connection, capacitanceC 41And diodeD 41Midpoint pass through endpoint g, capacitanceC 42And diodeD 42Midpoint pass through
Endpoint h capacitances with the first filter circuit 51 respectivelyC 51Both ends connection, capacitanceC 51Both ends it is inverse by endpoint i and full-bridge type
Become the switching tube S of circuit 6161With switching tube S63Midpoint connection, the switching tube S by endpoint j and full bridge inversion circuit 6162
With switching tube S64Midpoint connection, switching tube S63With switching tube S64Midpoint as exit point k, switching tube S61And switching tube
S62Midpoint as exit point m.
Embodiment two
As shown in figure 12, a kind of inversion system based on non-contact power technology, including solar cell 1, full-bridge type conversion electricity
Road 22, series-multiple connection resonance circuit 32, full-wave rectifying circuit 42, the second filter circuit 52 and Three-phase full-bridge inverter circuit 62, institute
State the exit point a of solar cell 1 and the switching tube S of full-bridge type translation circuit 223Connection, exit point b and full-bridge type become
Change the switching tube S of circuit 224Connection, the switching tube S of full-bridge type translation circuit 225With switching tube S6Midpoint by endpoint c with
The capacitance of series-multiple connection resonance circuit 32C P2Connection, switching tube S3With switching tube S4Midpoint pass through endpoint d and inductanceL P2Connection,
CapacitanceC S2One end pass through the diode of endpoint e and full-wave rectifying circuit 42D 43And diodeD 44Midpoint connection, capacitanceC S2's
The other end passes through endpoint f and the diode of full-wave rectifying circuit 42D 45And diodeD 46Midpoint connection, diodeD 43With two poles
PipeD 45Midpoint pass through endpoint g and the inductance of the second filter circuit 52L 51Same Name of Ends connects, diodeD 44And diodeD 46In
Point passes through endpoint h and the inductance of the second filter circuit 52L 52Same Name of Ends connects, capacitanceC 52Both ends it is complete by endpoint i and three-phase
The switching tube S of bridge inverter main circuit 6265With switching tube S66The both ends of place branch be connected, switching tube S69With switching tube S70
Midpoint as exit point k, switching tube S67With switching tube S68Midpoint as exit point m, switching tube S65With switching tube S66
Midpoint as exit point n.
In conclusion DC-AC electrical energy transformers circuit 2 can be full-bridge circuit, semi-bridge alternation circuit, recommend conversion
Circuit or other direct current can be transformed into the translation circuit of alternating current；Non-contact transformer is one kind of separable transformer,
There can be magnetic core or without magnetic core；Non-contact transformer primary coil and secondary coil both ends can add compensation circuit
It can be not added with compensation circuit；Rectification circuit 4 can be full bridge rectifier, Half bridge rectifier circuit, voltage doubling rectifing circuit or other
Rectification circuit；Inverter circuit 6 can be full bridge inverter, half-bridge inversion circuit, recommend inversion translation circuit or other can will
Direct current is transformed into the translation circuit of alternating current.In the circuit of the present invention, switching device is all derailing switches that can be used for copped wave
Part, such as MOS device, IGBT or other switching devices.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of inversion system based on non-contact power technology, which is characterized in that including solar cell（1）, DC-AC electric energy
Converter circuit（2）, non-contact transformer（3）, rectification circuit（4）, filter circuit（5）And inverter circuit（6）, solar cell
（1）With DC-AC electrical energy transformer circuits（2）It is connected, DC-AC electrical energy transformer circuits（2）With non-contact transformer（3）It is connected
It connects, non-contact transformer（3）With rectification circuit（4）It is connected, rectification circuit（4）With filter circuit（5）It is connected, filter circuit
（5）With inverter circuit（6）It is connected；The non-contact transformer（3）It is former including the primary coil and secondary coil to intercouple
Sideline is enclosed being more than 2mm, the gap that can accommodate roofing surface layer or metope waterproof material equipped with length between secondary coil；It is described
DC-AC electrical energy transformer circuits（2）By solar cell（1）Obtained direct current is changed into alternating current, through non-contact transformer
（3）Primary coil transfer energy in a non contact fashion to secondary coil, secondary coil obtains alternating current and passes to rectification circuit
（4）And filter circuit（5）It carries out rectifying and wave-filtering and obtains direct current, then by inverter circuit（6）Stable industrial-frequency alternating current is reverse into,
The load of supply thereafter uses or transmits energy to power grid.
2. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that further include converter
Control circuit（111）And inverter control circuit（112）, converter control circuit（111）With DC-AC electrical energy transformer circuits（2）
It is connected；The inverter control circuit（112）With inverter circuit（6）It is connected, inverter circuit（6）It is detected respectively with voltage signal
Circuit（113）And current signal detection circuit（114）It is connected, voltage signal detection circuit（113）With the first signal processing electricity
Road（115）It is connected, the first signal processing circuit（115）With inverter control circuit（112）It is connected, current signal detection circuit
（114）With secondary signal process circuit（116）It is connected, secondary signal process circuit（116）With inverter control circuit（112）Phase
Connection；The voltage signal detection circuit（113）By output voltageu oIt is changed into low AC voltage signalu os, current detection circuit
（114）By output currenti oIt is changed into low AC voltage signalu ios, voltage signal detection circuit（113）It will treated signal
Send the first signal processing circuit to（115）, current signal detection circuit（114）Will treated send to secondary signal processing
Circuit（116）, the first signal processing circuit（115）It will treated signalx u(t) send inverter control circuit to（112）, the
Binary signal process circuit（116）It will treated signalx i(t) send inverter control circuit to（112）.
3. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that the DC-AC electricity
It can converter circuit（2）For half-bridge converter circuit（21）, full-bridge type translation circuit（22）, push-pull type translation circuit（23）Or it pushes away
Pull self-sustaining translation circuit（24）；
The half-bridge converter circuit（21）Including capacitanceC 1, capacitanceC 2, switching tube S1With switching tube S2, capacitanceC 1And capacitanceC 2String
Branch and switching tube S after connection connection1With switching tube S2The branch circuit parallel connection connection being connected in series, capacitanceC 1And capacitanceC 2Place
The both ends of branch and solar cell（1）Output terminal be connected, capacitanceC 1And capacitanceC 2Midpoint, switching tube S1And switching tube
S2Midpoint respectively with non-contact transformer（3）Input terminal be connected；
The full-bridge type translation circuit（22）Including switching tube S3, switching tube S4, switching tube S5With switching tube S6, switching tube S3With open
Close pipe S4Branch and switching tube S after being connected in series5With switching tube S6The branch circuit parallel connection connection being connected in series, switching tube S3With open
Close pipe S4The both ends of place branch respectively with solar cell（1）Output terminal be connected, switching tube S3With switching tube S4In
Point, switching tube S5With switching tube S6Midpoint respectively with non-contact transformer（3）Input terminal be connected；
The push-pull type translation circuit（23）Including inductanceL 1, division inductanceL 2, division inductanceL 3, switching tube S7With switching tube S8,
InductanceL 1Respectively with dividing inductanceL 2With division inductanceL 3It is connected, divides inductanceL 2With division inductanceL 3It is coupled using magnetic core, is different
Name end is connected, and divides inductanceL 2With switching tube S7It is connected in series, divides inductanceL 3With switching tube S8It is connected in series, switching tube S8With opening
Close pipe S7It is connected in parallel, inductanceL 1, switching tube S7Respectively with solar cell（1）Output terminal be connected, divide inductanceL 2With opening
Close pipe S7Midpoint, division inductanceL 3With switching tube S8Midpoint respectively with non-contact transformer（3）Input terminal be connected；
The push-pull type self-sustaining translation circuit（24）Including inductanceL 4, division inductanceL 5, division inductanceL 6, resistanceR 1, resistanceR 2、
CapacitanceC 3, capacitanceC 4, switching tube S9With switching tube S10, inductanceL 4Respectively with dividing inductanceL 5, division inductanceL 6It is connected, division electricity
SenseL 5With division inductanceL 6It is coupled using magnetic core, different name end is connected；Divide inductanceL 5With switching tube S9It is connected in series, divides inductanceL 6
With switching tube S10It is connected in series；Divide inductanceL 5With switching tube S9Midpoint respectively with capacitanceC 3With resistanceR 1It is connected, capacitanceC 3
With resistanceR 1It is connected in parallel rear and switching tube S10Base stage be connected, divide inductanceL 6With switching tube S10Midpoint respectively with capacitanceC 4With resistanceR 2It is connected, capacitanceC 4With resistanceR 2It is connected in parallel rear and switching tube S9Base stage be connected, divide inductanceL 5With opening
Close pipe S9Series circuit and division inductanceL 6With switching tube S10Series circuit be connected in parallel；InductanceL 4, switching tube S9Respectively with
Solar cell（1）Output terminal be connected, divide inductanceL 5With switching tube S9Midpoint, division inductanceL 6With switching tube S10's
Midpoint respectively with non-contact transformer（3）Input terminal be connected.
4. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that the non-contact change
Depressor（3）Include compensation circuit, non-contact transformer（3）For string-series resonant circuit（31）, series-multiple connection resonance circuit
（32）, parallel-serial resonance circuit（33）Or simultaneously-antiresonant circuit（34）；
String-the series resonant circuit（31）Including capacitanceC P1, inductanceL P1, capacitanceC S1And inductanceL S1, capacitanceC P1And inductanceL P1
It is connected in series, capacitanceC S1And inductanceL S1It is connected in series, inductanceL P1And inductanceL S1It is connected by electromagnetic coupling；CapacitanceC P1And inductanceL P1The both ends of place branch respectively with DC-AC electrical energy transformer circuits（2）Output terminal be connected, capacitanceC S1And inductanceL S1Institute
The both ends of branch respectively with rectification circuit（4）Input terminal be connected；
The series-multiple connection resonance circuit（32）Including capacitanceC P2, inductanceL P2、C S2And inductanceL S2, capacitanceC P2And inductanceL P2Series connection
Connection, capacitanceC S2And inductanceL S2It is connected in parallel, inductanceL P2And inductanceL S2It is connected by electromagnetic coupling；CapacitanceC P2And inductanceL P2Institute
The both ends of branch respectively with DC-AC electrical energy transformer circuits（2）Output terminal be connected, inductanceL S2Both ends respectively with rectification
Circuit（4）Input terminal be connected；
The parallel-serial resonance circuit（33）Including capacitanceC P3, inductanceL P3、C S3And inductanceL S3, capacitanceC P3And inductanceL P3It is in parallel
Connection, capacitanceC S3And inductanceL S3It is connected in series, inductanceL P3And inductanceL S3It is connected by electromagnetic coupling；InductanceL P3Both ends difference
With DC-AC electrical energy transformer circuits（2）Output terminal be connected, capacitanceC S3And inductanceL S3The both ends of place branch respectively with it is whole
Current circuit（4）Input terminal be connected；
It is described simultaneously-antiresonant circuit（34）Including capacitanceC P4, inductanceL P4、C S4And inductanceL S4, capacitanceC P4And inductanceL P4It is in parallel
Connection, capacitanceC S4And inductanceL S4It is connected in parallel, inductanceL P4And inductanceL S4It is connected by electromagnetic coupling；InductanceL P4Both ends difference
With DC-AC electrical energy transformer circuits（2）Output terminal be connected, inductanceL S4Both ends respectively with rectification circuit（4）Input terminal
It is connected.
5. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that the rectification circuit
（4）For voltage doubling rectifing circuit（41）Or full-wave rectifying circuit（42）；
The voltage doubling rectifing circuit（41）Including diodeD 41, diodeD 42, capacitanceC 41And capacitanceC 42, diodeD 41With two poles
PipeD 42It is connected in series, capacitanceC 41And capacitanceC 42It is connected in series, diodeD 41And diodeD 42Midpoint, capacitanceC 41And capacitanceC 42
Midpoint respectively with non-contact transformer（3）Output terminal be connected；CapacitanceC 41With diodeD 41Connection, capacitanceC 42With two poles
PipeD 42Connection, capacitanceC 41With diodeD 41Midpoint, capacitanceC 42With diodeD 42Midpoint respectively with filter circuit（5）It is defeated
Enter end to be connected；
The full-wave rectifying circuit（42）Including diodeD 43, diodeD 44, diodeD 45And diodeD 46, diodeD 43With
DiodeD 44It is connected in series, diodeD 45And diodeD 46It is connected in series, diodeD 43With diodeD 45Connection, diodeD 44
With diodeD 46Connection, diodeD 43And diodeD 44Midpoint, diodeD 45And diodeD 46Midpoint connect respectively with non-
Thixotroping depressor（3）Output terminal be connected, diodeD 43And diodeD 45Midpoint, diodeD 44And diodeD 46Midpoint
Respectively with filter circuit（5）Input terminal be connected.
6. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that the filter circuit
（5）For the first filter circuit（51）, the second filter circuit（52）, the 3rd filter circuit（53）, the 4th filter circuit（54）, the 5th
Filter circuit（55）Or the 6th filter circuit（56）；
First filter circuit（51）Including capacitanceC 51, rectification circuit（4）Output terminal and capacitanceC 51Both ends be connected, electricity
HoldC 51Both ends and inverter circuit（6）Input terminal be connected；
Second filter circuit（52）Including inductanceL 51, inductanceL 52And capacitanceC 52, inductanceL 51And inductanceL 52Same Name of Ends difference
With rectification circuit（4）Output terminal be connected, inductanceL 51And inductanceL 52Different name end respectively with capacitanceC 52Both ends be connected,
InductanceL 51And inductanceL 52Form mutual inductance circuit, capacitanceC 52Both ends respectively with inverter circuit（6）Input terminal be connected；
3rd filter circuit（53）Including capacitanceC 53, inductanceL 53, inductanceL 54And capacitanceC 54, capacitanceC 53Both ends respectively with
InductanceL 53And inductanceL 54Same Name of Ends be connected, inductanceL 53And inductanceL 54Different name end respectively with capacitanceC 54Both ends be connected
It connects, inductanceL 53And inductanceL 54Form mutual inductance circuit, capacitanceC 53Respectively with rectification circuit（4）Output terminal be connected, capacitanceC 54's
Both ends respectively with inverter circuit（6）Input terminal be connected；
4th filter circuit（54）Including inductanceL 55And capacitanceC 55, inductanceL 55And capacitanceC 55It is connected in series, inductanceL 55And electricity
HoldC 55Respectively with rectification circuit（4）Output terminal be connected, capacitanceC 55Both ends respectively with inverter circuit（6）Input terminal phase
Connection；
5th filter circuit（55）Including capacitanceC 56, inductanceL 56And inductanceL 57, inductanceL 56, capacitanceC 56And inductanceL 57Successively
It is connected in series, capacitanceC 56Both ends respectively with rectification circuit（4）Output terminal be connected, inductanceL 56And inductanceL 57Respectively with it is inverse
Become circuit（6）Input terminal be connected；
6th filter circuit（56）Including inductanceL 58And capacitanceC 57, inductanceL 58And capacitanceC 57It is connected in series, capacitanceC 57Two
End respectively with rectification circuit（4）Output terminal be connected, inductanceL 58And capacitanceC 57Respectively with inverter circuit（6）Input terminal phase
Connection.
7. the inversion system according to claim 1 based on non-contact power technology, which is characterized in that the inverter circuit
（6）For full bridge inversion circuit（61）, Three-phase full-bridge inverter circuit（62）, push-pull inverter（63）Or semibridge system inversion
Circuit（64）；
The full bridge inversion circuit（61）Including switching tube S61, switching tube S63, switching tube S62With switching tube S64, switching tube S61
With switching tube S62It is connected in series to form a branch, switching tube S63With switching tube S64It is connected in series to form a branch, two branch
Road is connected in parallel；Filter circuit（5）Output terminal and switching tube S61With switching tube S62The branch at place is connected, switching tube S61
With switching tube S62Midpoint, switching tube S63With switching tube S64Midpoint as inverter circuit（6）Output terminal；
The Three-phase full-bridge inverter circuit（62）Including switching tube S65, switching tube S66, switching tube S67, switching tube S68, switching tube
S69With switching tube S70, switching tube S65With switching tube S66It is connected in series to form a branch, switching tube S67With switching tube S68Series connection
Connection forms a branch, switching tube S69With switching tube S70It is connected in series to form a branch, three branch circuit parallel connection connections；Filter
Wave circuit（5）Output terminal and switching tube S65With switching tube S66The branch at place is connected, switching tube S65With switching tube S66In
Point, switching tube S67With switching tube S68Midpoint, switching tube S69With switching tube S70Midpoint respectively as inverter circuit（6）Three
A output terminal；
The push-pull inverter（63）Including inductanceL 61, division inductanceL 62, division inductanceL 63, switching tube S71And switching tube
S72, inductanceL 61Respectively with dividing inductanceL 62With division inductanceL 63It is connected, divides inductanceL 62With division inductanceL 63Using magnetic core
Coupling, different name end are connected, and divide inductanceL 62With switching tube S71It is connected in series, divides inductanceL 63With switching tube S72It is connected in series, point
Split inductanceL 62With switching tube S71Series circuit and division inductanceL 63With switching tube S72Series circuit be connected in parallel；InductanceL 61, switching tube S77Respectively with filter circuit（5）Output terminal be connected, divide inductanceL 62With switching tube S71Midpoint, division electricity
SenseL 63With switching tube S72Midpoint respectively as inverter circuit（6）Output terminal；
The half bridge inverter circuit（64）Including capacitanceC 61, capacitanceC 61, switching tube S73With switching tube S74, capacitanceC 61And capacitanceC 61It is connected in series to form a branch, switching tube S73With switching tube S74It is connected in series a branch, two branch circuit parallel connection connections；
Filter circuit（5）Output terminal and capacitanceC 61And capacitanceC 61The both ends of place branch are connected, capacitanceC 61And capacitanceC 62In
Point, switching tube S73With switching tube S74Midpoint respectively as inverter circuit（6）Output terminal.
8. the inversion system based on non-contact power technology according to any one of claim 3-7, which is characterized in that bag
Include solar cell（1）, half-bridge converter circuit（21）, string-series resonant circuit（31）, voltage doubling rectifing circuit（41）, first
Filter circuit（51）And full bridge inversion circuit（61）, the solar cell（1）Exit point a and half bridge circuit（21）
CapacitanceC 1Connection, exit point b and half bridge circuit（21）CapacitanceC 2Connection, half bridge circuit（21）CapacitanceC 1And electricity
HoldC 2Midpoint pass through endpoint c and string-series resonant circuit（31）InductanceL P1Connection, switching tube S1With switching tube S2Midpoint
Pass through endpoint d and capacitanceC P1Connection, capacitanceC S1Pass through endpoint e and voltage doubling rectifing circuit（41）CapacitanceC 41And capacitanceC 42In
Point connection, inductanceL S1Pass through endpoint f and voltage doubling rectifing circuit（41）DiodeD 41And diodeD 42Midpoint connection, capacitanceC 41And diodeD 41Midpoint pass through endpoint g, capacitanceC 42And diodeD 42Midpoint by endpoint h respectively with the first filtered electrical
Road（51）CapacitanceC 51Both ends connection, capacitanceC 51Both ends pass through endpoint i and full bridge inversion circuit（61）Switching tube S61
With switching tube S63Midpoint connection, pass through endpoint j and full bridge inversion circuit（61）Switching tube S62With switching tube S64Midpoint
Connection, switching tube S63With switching tube S64Midpoint as exit point k, switching tube S61With switching tube S62Midpoint as output
Endpoint m.
9. the inversion system based on non-contact power technology according to any one of claim 3-7, which is characterized in that bag
Include solar cell（1）, full-bridge type translation circuit（22）, series-multiple connection resonance circuit（32）, full-wave rectifying circuit（42）, second
Filter circuit（52）With Three-phase full-bridge inverter circuit（62）, the solar cell（1）Exit point a and full-bridge type convert
Circuit（22）Switching tube S3Connection, exit point b and full-bridge type translation circuit（22）Switching tube S4Connection, full-bridge type conversion
Circuit（22）Switching tube S5With switching tube S6Midpoint pass through endpoint c and series-multiple connection resonance circuit（32）CapacitanceC P2Connection,
Switching tube S3With switching tube S4Midpoint pass through endpoint d and inductanceL P2Connection, capacitanceC S2One end pass through endpoint e and full-wave rectification
Circuit（42）DiodeD 43And diodeD 44Midpoint connection, capacitanceC S2The other end pass through endpoint f and full-wave rectifying circuit
（42）DiodeD 45And diodeD 46Midpoint connection, diodeD 43And diodeD 45Midpoint pass through endpoint g and second filter
Wave circuit（52）InductanceL 51Same Name of Ends connects, diodeD 44And diodeD 46Midpoint pass through endpoint h and the second filter circuit
（52）InductanceL 52Same Name of Ends connects, capacitanceC 52Both ends pass through endpoint i and Three-phase full-bridge inverter circuit（62）Switching tube
S65With switching tube S66The both ends of place branch be connected, switching tube S69With switching tube S70Midpoint as exit point k, open
Close pipe S67With switching tube S68Midpoint as exit point m, switching tube S65With switching tube S66Midpoint as exit point n.
10. a kind of detection method of the inversion system based on non-contact power technology, which is characterized in that its step are as follows：
Step 1：Inverter circuit（6）Output voltageu oThrough voltage signal detection circuit（113）Filtering obtains voltage letter with decompression
Numberu os, the first signal processing circuit（115）By the voltage signal of positive and negative alternationu osTwo-way is divided to be multiplied, obtains permanent positive signalx u
(t), thenx u(t)=k 1·u os 2=k 1·(|u os|sinα)2, the first signal processing circuit（115）By signalx u(t) it is transmitted to inversion
Control circuit（112）；Whereink 1For constant；
Step 2：Inverter control circuit（112）By signalx u(t) be converted into digital quantity and be stored in memory；From inverter control circuit
（112）Signal is taken out in internal memoryk 1·u os 2BeforeT 1/ 4 waveformk 1·[|u os|sin(α+90)]2Corresponding number
Amount, according to sin2(α)+sin2The two is added to obtain output voltage by the principle of (+90 ° of α)=1u oSquare of average value：=k 1·k 2·{(|u os|sinα)2+[|u os|sin(α+90)]2, wherein,k 2For constant coefficient,T 1For voltage signalu osCycle；
Step 3：Ify u(t)= ,e u (t)= , by signalx u(t) equal interval sampling and sequence is stored as, Mei Gegong
Sample frequency is set as 400 times in the frequency cycle, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR filtering
Device：
e u (t) = a0·x u(t)+ a100·x u(t-100·T S) + a400·x u(t-400·T S)+ a500·x u(t-500·T S)
= x u(t)+ x u(t-100·T S)-x u(t-400·T S)-x u(t-500·T S)；
y u (t) = a0·x u(t)+ a100·x u(t-100·T S) = x u(t)+ x u(t-100·T S)；
Wherein, coefficient a0=a100=1, a400=a500= -1；
Under normal operating conditions, average voltage variation is smaller, changes differencee u (t)= Always 0V is maintained2Left and right；
When there is apparent Voltage Drop in system, differencee u(t)= Negative value, and signal can be strongly reducedy u(t) drastically decline；
Step 4：Inverter circuit（6）Output currenti oThrough galvanic electricity signal deteching circuit（114）Electric current is changed into voltage signalu ios, secondary signal process circuit（116）By the voltage signal of positive and negative alternationu iosTwo-way is divided to be multiplied, obtains permanent positive signalx i(t), thenx i(t)=k 3·u ios 2= k 3·(|u ios|sinα)2；Secondary signal process circuit（116）By signalx i(t), transmission
To inverter control circuit（112）；Inverter control circuit（112）By signalx i(t) be converted into digital quantity and be stored in memory；From inverse
Become control circuit（112）Signal is taken out in internal memoryx i(t) beforeT 1The waveform at/4 momentk 3·[|u ios|sin(α+
90)]2Corresponding digital quantity, obtains output currenti oMean square：=k 3·k 4·{(|u ios|sinα)2+[|u ios|
sin(α+90)]2, wherein,k 3、k 4For constant coefficient；
Step 5：Ify i(t)= ,e i(t)= , by signalx i(t) equal interval sampling and sequence is stored as, each power frequency
Sample frequency is set as 400 times in cycle, sample frequencyf sIt is set to 20kHz；Sampling periodT S=1/f s, corresponding FIR filter：
e i (t) = a0·x i(t)+ a100·x i(t-100·T S) + a400·x i(t-400·T S)+ a500·x i(t-500·T S)
= x i(t)+ x i(t-100·T S)-x i(t-400·T S)-x i(t-500·T S)；
y i (t) = a0·x i(t)+ a100·x i(t-100·T S) = x i(t)+ x i(t-100·T S)；
Wherein, coefficient a0=a100=1, a400=a500= -1；
When there is current surge, signale i(t) become positive value and signaly i(t) steeply rise；Due to signale(t) be not in
Delay distortion, signale i(t) become positive value can determine whether for electric current increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Application publication date: 20180601 Assignee: Henan New Industrial Technology Research Institute Co.,Ltd. Assignor: HENAN INSTITUTE OF ENGINEERING Contract record no.: X2023980053170 Denomination of invention: An inverter system and detection method based on non-contact power supply technology Granted publication date: 20200403 License type: Common License Record date: 20231225 |