CN103762621B - A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method - Google Patents
A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method Download PDFInfo
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- CN103762621B CN103762621B CN201410008412.XA CN201410008412A CN103762621B CN 103762621 B CN103762621 B CN 103762621B CN 201410008412 A CN201410008412 A CN 201410008412A CN 103762621 B CN103762621 B CN 103762621B
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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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- 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
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/34—Arrangements for transfer of electric power between networks of substantially different frequency
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- Power Engineering (AREA)
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Abstract
The invention belongs to electrical network and supply electrical domain, particularly to a kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method.Alternating current-direct current intercommunication control circuit provided by the present invention includes alternating current-direct current intercommunication changer and bus capacitor, and wherein alternating current-direct current intercommunication changer includes commutation inversion module and control module；Commutation inversion module and control module are all connected with ac bus and dc bus, and bus capacitor connects dc bus, and the power flow of control module controls end and connects the controlled end of commutation inversion module.In the circuit, control module can make commutation inversion module work in rectification state or inverter mode according to the voltage swing of dc bus.It is applied in alternating current-direct current intercommunication micro-capacitance sensor, forms alternating current-direct current intercommunication control method in conjunction with the threshold value set, more can realize automatically controlling of power flow between ac bus and dc bus, be greatly improved the stability of alternating current-direct current intercommunication micro-capacitance sensor.
Description
Technical field
The invention belongs to electrical network for electrical domain, particularly to a kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and
Control method.
Background technology
The computer of people's everyday life use, TV, LED illumination lamp, convertible frequency air-conditioner, frequency conversion refrigerator
It is unidirectional current etc. the operating current of electrical equipment, and these operating currents are all by carrying out electric main
Rectification processes and obtains.Its reason is that existing electrical network is to use High Level AC Voltage conveying electric energy, the most permissible
Effectively reduce the loss in electric energy course of conveying.But, owing to general residential electricity consumption equipment is many with unidirectional current it is
Main, alternating current is converted to galvanic during will certainly cause some waste of energy.
In recent years, the new forms of energy such as solaode, fuel cell are more and more universal.New forms of energy are being incorporated to now
During some AC networks, needing DC inverter produced by new forms of energy is alternating current.It compares tradition friendship
The stream electromotor energy also to be changed by many electric energy again, and the waste of energy caused just becomes apparent from.
Therefore, under the promotion of new forms of energy application, alternating current-direct current micro-capacitance sensor obtains certain development.This is slightly
Electrical network with AC network co-ordination, and can adapt to the need for electricity loaded, thus avoids repeatedly electric energy
The waste of energy that conversion is brought.But, these micro-capacitance sensor yet suffer from the place of some shortcomings, main
Be that the direct current network powered by grid-connected power generation system has unstability and a undulatory property, and AC network with
Automatically controlling of power flow cannot be realized again between direct current network, cause alternating current-direct current micro-capacitance sensor power supply instability.
In sum, existing alternating current-direct current micro-capacitance sensor exists and cannot automatically control between AC network and direct current network
The problem of power flow processed.
Summary of the invention
It is an object of the invention to provide a kind of alternating current-direct current intercommunication control circuit, it is intended to solve existing alternating current-direct current
Micro-capacitance sensor exists cannot automatically control the problem that electric energy flows between AC network and direct current network.
The present invention is achieved in that a kind of alternating current-direct current intercommunication control circuit, connects ac bus female with direct current
Line, described alternating current-direct current intercommunication control circuit includes:
Alternating current-direct current intercommunication changer, it is female with described direct current that exchange end is connected described ac bus respectively with DC terminal
Line；
Bus capacitor, connects described dc bus；
Described alternating current-direct current intercommunication changer includes commutation inversion module and control module；
The exchange end of described commutation inversion module connects formation altogether with the alternating current test side of described control module and hands over
The direct current of the exchange end of direct current intercommunication changer, the DC terminal of described commutation inversion module and described control module
Electro-detection end connects the DC terminal forming described alternating current-direct current intercommunication changer, the power flow of described control module altogether
Control end and connect the controlled end of described commutation inversion module；
Described control module judges the electricity on described dc bus according to the voltage swing on described bus capacitor
Can state；
When described energy state is superfluous state, described control module controls described commutation inversion module to institute
State the unidirectional current on dc bus and carry out inversion process, and export on described ac bus；
When described energy state is not enough state, described control module controls described commutation inversion module to institute
State the alternating current on ac bus and carry out rectification process, and export on described dc bus；
When described energy state is matching status, described control module controls described commutation inversion module and stops
Work.
Another object of the present invention also resides in a kind of alternating current-direct current intercommunication micro-capacitance sensor of offer, including dc bus, friendship
Stream bus, DC generation module and alternative electric generation module；Described dc bus connects described DC generation mould
Block and DC load, described ac bus connects described alternative electric generation module, AC load and electric main
Electrical network；
Described alternating current-direct current intercommunication micro-capacitance sensor also includes above-mentioned alternating current-direct current intercommunication control circuit, and exchange monitoring
End is connected the monitoring module of described ac bus and described dc bus respectively with direct-current supervision end；
Described monitoring module is for gathering described ac bus and the information of voltage on described dc bus and electricity
Stream information.
It is straight that another object of the present invention also resides in a kind of friendship based on above-mentioned alternating current-direct current intercommunication micro-capacitance sensor of offer
Stream intercommunication control method, comprises the following steps:
Described alternating current-direct current intercommunication control method comprises the following steps:
A, described control module judge whether the magnitude of voltage on described dc bus is in voltage lower limit value and electricity
Press between limit value, if then performing step B, if otherwise performing step C；
B, described commutation inversion module quit work, and perform step A；
C, described control module judge that whether the magnitude of voltage on described dc bus is more than or equal to upper voltage limit
Value, if then performing step D, if otherwise performing step E；
D, described commutation inversion module carry out inversion process to the unidirectional current on described dc bus, and export
On described ac bus, perform step A；
E, described commutation inversion module carry out rectification process to the alternating current on described ac bus, and export
On described dc bus, perform step A.
Alternating current-direct current intercommunication control circuit provided by the present invention includes alternating current-direct current intercommunication changer and bus capacitor, its
Middle alternating current-direct current intercommunication changer includes commutation inversion module and control module；Commutation inversion module and control module
Being all connected with ac bus and dc bus, bus capacitor connects dc bus, the power flow control of control module
End processed connects the controlled end of commutation inversion module.In the circuit, control module can be according to dc bus
Voltage swing makes commutation inversion module work in rectification state or inverter mode.It is applied to alternating current-direct current intercommunication
In micro-capacitance sensor, in conjunction with set threshold value formed alternating current-direct current intercommunication control method, more can realize ac bus with
The automatically controlling of power flow between dc bus, is greatly improved the stability of alternating current-direct current intercommunication micro-capacitance sensor.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the alternating current-direct current intercommunication control circuit that first embodiment of the invention is provided；
Fig. 2 is the exemplary circuit structure chart of the rectification filtering module that first embodiment of the invention is provided；
Fig. 3 is the exemplary circuit structure chart of the rectification filtering module that second embodiment of the invention is provided；
Fig. 4 is the function structure chart of the alternating current-direct current intercommunication micro-capacitance sensor that third embodiment of the invention is provided；
Fig. 5 is the function structure chart of the alternating current-direct current intercommunication micro-capacitance sensor that fourth embodiment of the invention is provided；
Fig. 6 is the function structure chart of the alternating current-direct current intercommunication micro-capacitance sensor that fifth embodiment of the invention is provided；
Fig. 7 is the flowage structure figure of the alternating current-direct current intercommunication control method that sixth embodiment of the invention is provided；
Fig. 8 is the flowage structure figure of the alternating current-direct current intercommunication control method that seventh embodiment of the invention is provided；
Fig. 9 is the flowage structure figure of the alternating current-direct current intercommunication control method that seventh embodiment of the invention is provided.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Alternating current-direct current intercommunication control circuit provided by the present invention includes alternating current-direct current intercommunication changer and bus capacitor, its
Middle alternating current-direct current intercommunication changer includes commutation inversion module and control module；Commutation inversion module and control module
Being all connected with ac bus and dc bus, bus capacitor connects dc bus, the power flow control of control module
End processed connects the controlled end of commutation inversion module.Solve existing alternating current-direct current micro-capacitance sensor and there is AC network with straight
Cannot automatically control, between stream electrical network, the problem that electric energy flows to.
Embodiment 1
Fig. 1 shows the modular structure of the alternating current-direct current intercommunication control circuit that the present embodiment provided, for the ease of
Illustrating, illustrate only part related to the present embodiment, details are as follows:
The alternating current-direct current intercommunication control circuit that the present embodiment is provided connects ac bus 30 and dc bus 40.
Concrete, ac bus 30 can be the transmission electric energy of the AC network in alternating current-direct current intercommunication micro-capacitance sensor
Main traverse line, it has bigger electric energy weight bearing power.Same, dc bus 40 can be alternating current-direct current
The main traverse line of the transmission electric energy of the direct current network in intercommunication micro-capacitance sensor.
Concrete, alternating current-direct current intercommunication control circuit can include alternating current-direct current intercommunication changer 10 and bus capacitor
20。
Wherein, the exchange end of alternating current-direct current intercommunication changer 10 is connected described ac bus 30 respectively with DC terminal
With described dc bus 40, bus capacitor 20 connects described dc bus 40.
In the present embodiment, the mutual ventilating controller of alternating current-direct current may refer to both can with rectification work can also inversion work
The power equipment made, such as the unit equipment etc. of two-way inverter, inverter and rectification circuit.Alternating current-direct current intercommunication
Controller can adjust the duty of self, including whole by detecting the voltage swing of dc bus 40
Stream mode, inverter mode and hot stand-by duty.
Wherein, rectification state is that the alternating current on ac bus 30 is carried out rectification process, and exports direct current
Electricity is to dc bus 40, and its power flow is ac bus 30 to dc bus 40；Inverter mode is to directly
Unidirectional current on stream bus 40 carries out inversion process, and output AC electricity is to ac bus 30, its electric energy stream
To for dc bus 40 to ac bus 30；Hot stand-by duty is then neither to the exchange on ac bus 30
Electricity carries out rectification process, the unidirectional current on dc bus 40 is not carried out inversion process, now exchanges mother
Flow of electrical power is not had between line 30 and dc bus 40.
In the case of normal work, the magnitude of voltage on dc bus 40 is invariable, and is adding
After bus capacitor 20, the voltage on dc bus 40 will follow the electric energy of institute's load on dc bus 40
Change and change.I.e. when on dc bus 40, the electric energy of institute's load is less, the electricity on dc bus 40
Pressure value is less；And the magnitude of voltage when the electric energy of institute's load is more on dc bus 40, on dc bus 40
The biggest.
Further, upper voltage limit value V1 and a voltage lower limit value V2 can be set.
When the magnitude of voltage on dc bus 40 is less than or equal to voltage lower limit value V2, alternating current-direct current intercommunication converts
Device 10 enters rectification state；When the magnitude of voltage on dc bus 40 is more than or equal to upper voltage limit value V1,
Alternating current-direct current intercommunication changer 10 enters inverter mode；When the magnitude of voltage on dc bus 40 is in lower voltage limit
Time between value V2 and upper voltage limit value V1, alternating current-direct current intercommunication changer 10 enters hot stand-by duty.
Further, upper voltage limit value V1 can be 380V, voltage lower limit value V1 can be 350V.
Further, alternating current-direct current intercommunication changer 10 includes commutation inversion module 101 and control module 102.
Wherein, the exchange end of commutation inversion module 101 connects shape altogether with the alternating current test side of control module 102
Become the exchange end of alternating current-direct current intercommunication changer 10, the DC terminal of commutation inversion module 101 and control module 102
Unidirectional current test side altogether connect formed alternating current-direct current intercommunication changer 10 DC terminal, the electricity of control module 102
Energy traffic organising end connects the controlled end of commutation inversion module 101.
In the present embodiment, owing to being additionally arranged bus capacitor 20 so that the magnitude of voltage on dc bus 40 is straight
Connect and reflect the electricity of institute's load on dc bus 40 so that control module 102 can be by detection direct current
Magnitude of voltage on bus 40 judges the not enough state that the electric energy on dc bus 40 is in, superfluous state
Or matching status, and export SPWM(Sinusoidal Pulse Width Modulation according to judged result,
Sinusoidal Pulse Width Modulation) control signal to commutation inversion module 101, adjust commutation inversion module 101 in time
Duty, and then make to export from ac bus 30 electric energy on dc bus 40 to make up its electric energy
Deficiency, or by the power compensation of excess on ac bus 30 so that electrical network is more stable, or stop electricity
Can conveying.
Further, control module 102 can be model be the processor of DSP28012 or DSP28035.
Concrete, control module 102 is owing to needing the merit realizing voltage detecting, pwm control signal exports
Can, it is therefore desirable to use and there is analog-digital conversion function and programmable controller.
In the present embodiment, commutation inversion module 101 may include that
First electric capacity C1, the second electric capacity C2, the first inductance L1, the second inductance L2, the first NMOS tube
Q1, the second NMOS tube Q2, the 3rd NMOS tube Q3, the 4th NMOS tube Q4, the first diode
D1, the second diode D2, the 3rd diode D3 and the 4th diode D4；
First end of the first electric capacity C1 and first end of the first inductance L1 connect formation commutation inversion module 101 altogether
First exchange end, it is inverse that second end of the first electric capacity C1 and first end of the second inductance L2 connect formation rectification altogether
Become the second exchange end of module 101, the first exchange end of commutation inversion module 101 and the second exchange end composition
The exchange end of commutation inversion module 101；Second end of the first inductance L1, the source of the first NMOS tube Q1
Pole, the drain electrode of the 3rd NMOS tube Q3, the anode of the first diode D1 are connected to the 3rd diode D3 altogether
Negative electrode, second end of the second inductance L2, the source electrode of the second NMOS tube Q2, the 4th NMOS tube
The drain electrode of Q4, the anode of the second diode D2 are connected to the negative electrode of the 4th diode D4, a NMOS altogether
The drain electrode of pipe Q1, the negative electrode of the first diode D1, the drain electrode of the second NMOS tube Q2, the two or two pole
The negative electrode of pipe D2 and first end of the second electric capacity C2 connect altogether and form the first straight of commutation inversion module 101
Stream end, the source electrode of the 3rd NMOS tube Q3, the anode of the 3rd diode D3, the 4th NMOS tube Q4
Second end of source electrode, the anode of the 4th diode D4 and the second electric capacity C2 connect formation commutation inversion altogether
Second DC terminal of module 101, the first DC terminal of commutation inversion module 101 is whole with the second DC terminal composition
The DC terminal of stream inversion module 101, the grid of the first NMOS tube Q1, the grid of the second NMOS tube Q2
The grid composition commutation inversion module of pole, the grid of the 3rd NMOS tube Q3 and the 4th NMOS tube Q4
The controlled end of 101.
In the present embodiment, the SPWM signal of control module 102 output can be multiple, and connects respectively
Enter the grid of the first NMOS tube Q1, the grid of the second NMOS tube Q2, the 3rd NMOS tube Q3
Grid and the grid of the 4th NMOS tube Q4, each NMOS tube is according to received SPWM letter
Number realize break-make, make commutation inversion module 101 carry out rectification or inverter operation, or quit work.
Further, as it is shown on figure 3, bus capacitor 20 can be the 3rd electric capacity C3, the 3rd electric capacity C3
Positive pole and negative pole connect the first DC terminal and second DC terminal of commutation inversion module 101 respectively.
Concrete, the 3rd electric capacity C3 can use alminium electrolytic condenser or tantalum electrochemical capacitor, and its pressure voltage is permissible
Maximum voltage according to dc bus 40 sets.Such as, the maximum voltage of dc bus 40 takes 380V,
The pressure voltage of bus capacitor 20 can take 450V.
Embodiment 2
The enforcement of the present embodiment is set up on the basis of above-described embodiment.
In the present embodiment, bus capacitor 20 can also use polarity free capacitor, and is installed on commutation inversion
Module 101 is internal.
Concrete, as it is shown on figure 3, commutation inversion module 101 may include that
First electric capacity C1, the first inductance L1, the second inductance L2, the first NMOS tube Q1, the 2nd NMOS
Pipe Q2, the 3rd NMOS tube Q3, the 4th NMOS tube Q4, the first diode D1, the second diode
D2, the 3rd diode D3 and the 4th diode D4；
First end of the first electric capacity C1 and first end of the first inductance L1 connect formation commutation inversion module 101 altogether
First exchange end, it is inverse that second end of the first electric capacity C1 and first end of the second inductance L2 connect formation rectification altogether
Become the second exchange end of module 101, the first exchange end of commutation inversion module 101 and the second exchange end composition
The exchange end of commutation inversion module 101；Second end of the first inductance L1, the source of the first NMOS tube Q1
Pole, the drain electrode of the 3rd NMOS tube Q3, the anode of the first diode D1 are connected to the 3rd diode D3 altogether
Negative electrode, second end of the second inductance L2, the source electrode of the second NMOS tube Q2, the 4th NMOS tube
The drain electrode of Q4, the anode of the second diode D2 are connected to the negative electrode of the 4th diode D4, a NMOS altogether
The drain electrode of pipe Q1, the negative electrode of the first diode D1, the drain electrode of the second NMOS tube Q2 and the two or two
The negative electrode of pole pipe D2 connects the first DC terminal forming commutation inversion module 101, the 3rd NMOS tube Q3 altogether
Source electrode, the anode of the 3rd diode D3, the source electrode of the 4th NMOS tube Q4 and the 4th diode
The anode of D4 connects the second DC terminal forming commutation inversion module 101, the of commutation inversion module 101 altogether
One DC terminal forms the DC terminal of commutation inversion module 101 with the second DC terminal, the first NMOS tube Q1
Grid, the grid of the second NMOS tube Q2, the grid of the 3rd NMOS tube Q3 and the 4th NMOS
The controlled end of the grid composition commutation inversion module 101 of pipe Q4.
Bus capacitor 20 can be the 4th electric capacity C4, and the first end and second end of the 4th electric capacity C4 connect respectively
Connect the first DC terminal and second DC terminal of commutation inversion module 101.
Embodiment 3
The enforcement of the present embodiment is set up on the basis of above-described embodiment
Fig. 4 shows the modular structure of the alternating current-direct current intercommunication micro-capacitance sensor that the present embodiment provided, for the ease of saying
Bright, illustrate only part related to the present invention, details are as follows:
The alternating current-direct current intercommunication micro-capacitance sensor that the present embodiment is provided includes dc bus 40, ac bus 30, straight
Stream electricity generation module 80 and alternative electric generation module 60；Dc bus 40 connects DC generation module 80 with straight
Current load 70, ac bus 30 connects alternative electric generation module 60, AC load 50 and electric main electricity
Net 90.
In the present embodiment, DC generation module 80 can use photovoltaic DC electricity generation system, and it is by photovoltaic
Array forms with photovoltaic controller.Alternative electric generation module 60 can use the exchange of wind generator system etc
Electricity generation system.DC load 70 is the electrical appliance directly utilizing unidirectional current work, and AC load 50 is then
Directly utilize the electrical appliance of alternating current work.
Further, alternating current-direct current intercommunication micro-capacitance sensor can also include above-mentioned alternating current-direct current intercommunication control circuit.
In the present embodiment, alternating current-direct current intercommunication control circuit uses the annexation described in embodiment 1,
I.e. the exchange end of alternating current-direct current intercommunication changer 10 be connected respectively with DC terminal described ac bus 30 with described directly
Stream bus 40, bus capacitor 20 connects described dc bus 40.
Further, alternating current-direct current intercommunication micro-capacitance sensor can also include that exchanging monitoring client connects respectively with direct-current supervision end
Connect the monitoring module 110 of described ac bus 30 and described dc bus 40.
In the present embodiment, monitoring module 110 can use the monitoring system with electronic computer as core and
Software kit.User passes through monitoring module 110, can remotely monitor the operation shape of alternating current-direct current intercommunication micro-capacitance sensor
State.Concrete, monitoring module 110 can be by gathering ac bus 30 and the voltage on dc bus 40
Information and current information etc., directly obtain ac bus 30 and the magnitude of voltage on dc bus 40, current value,
And obtain voltage and the frequency values of electric current and harmonic wave further, to monitor the duty etc. of each equipment.So that
In the case of micro-capacitance sensor occurs extremely, user can respond in time, it is to avoid bigger loss occurs.
Embodiment 4
The enforcement of the present embodiment is set up on the basis of above-described embodiment
In the present embodiment, as it is shown in figure 5, alternating current-direct current intercommunication micro-capacitance sensor can also include being serially connected with exchange city
The first switch 120 between electricity electrical network 90 and ac bus 30.
Concrete, the first switch 120 can use relay；Its first end connects electric main electrical network 90,
Second end of the first switch 120 connects ac bus 30, the controlled end link control module of the first switch 120
The power network switch of 102 controls end.
In the present embodiment, if electric main electrical network 90 power down, the exchange monitoring client of monitoring module 110
No-voltage inputs, then send and control signal to the first switch 120, make the first switch 120 disconnect, so that
Electric main electrical network 90 departs from micro-capacitance sensor, and then makes micro-capacitance sensor independent operating, it is to avoid electric energy runs off.
Further, alternating current-direct current intercommunication micro-capacitance sensor also includes the energy-storage module 100 being connected with dc bus 40.
In the present embodiment, energy-storage module 100 can be as answering urgent telegram during electric main electrical network 90 power down
Source.Concrete, energy-storage module 100 can be at alternating current-direct current intercommunication micro-capacitance sensor produced electric energy (i.e. alternative electric generation
Electric energy produced by module 60 and DC generation module 80) it is insufficient for the load of alternating current-direct current intercommunication micro-capacitance sensor
During the demand of (i.e. AC load 50 with DC load 70), provide electric energy to alternating current-direct current intercommunication micro-capacitance sensor；
Or the energy demand loaded more than alternating current-direct current intercommunication micro-capacitance sensor at alternating current-direct current the produced electric energy of intercommunication micro-capacitance sensor
Time, obtain electric energy by alternating current-direct current intercommunication micro-capacitance sensor, carry out energy reserve, in case using.
Further, alternating current-direct current intercommunication micro-capacitance sensor also includes being serially connected with energy-storage module 100 and dc bus 40
Between second switch 130；
Concrete, second switch 130 can use relay；Its first end connects energy-storage module 100, the
Second end of two switches 130 connects dc bus 40, the controlled end link control module of second switch 130
The energy storage switch control terminal of 102.
In the present embodiment, whether the produced electric energy of alternating current-direct current intercommunication micro-capacitance sensor meets alternating current-direct current intercommunication micro-capacitance sensor
The demand of load is reflected directly on the voltage of dc bus 40, and monitoring module 110 can be straight by monitoring
Voltage on stream bus 40 carries out the judgement being correlated with.Its basis for estimation is referred in embodiment 1 control mould
The judgement of block 102, details are as follows:
Upper voltage limit value V1 in embodiment 1 and voltage lower limit value V2 can be used.
When the magnitude of voltage on dc bus 40 is less than or equal to voltage lower limit value V2, second switch 130
Conducting, energy-storage module 100 is powered to dc bus 40；When the magnitude of voltage on dc bus 40 more than or etc.
When upper voltage limit value V1, second switch 130 turns on, and energy-storage module 100 enters charged state.
It addition, when magnitude of voltage on dc bus 40 be in voltage lower limit value V2 and upper voltage limit value V1 it
Between time, second switch 130 disconnects.
Further, when the state-of-charge of energy-storage module 100 is less than charged lower limit, second switch 130
Disconnecting, energy-storage module 100 is stopped power supply；When the state-of-charge of energy-storage module 100 is more than charged higher limit,
Second switch 130 disconnects, and energy-storage module 100 stops charging.
Concrete, energy-storage module 100 can be output voltage be 360V lithium battery group, on its state-of-charge
Limit and state-of-charge lower limit can be set as the 80% and 20% of lithium battery group maximum energy storage capacity respectively.
Embodiment 5
The enforcement of the present embodiment is set up on the basis of above-described embodiment.
In the present embodiment, as shown in Figure 6, alternating current-direct current intercommunication micro-capacitance sensor can also include the 3rd switch 140,
4th switch 150 and the 5th switch 160；
Concrete, the 3rd switch 140 is serially connected with between alternative electric generation module 60 and ac bus 30, and the 4th
Switch 150 is serially connected with between ac bus 30 and alternating current-direct current intercommunication changer 10, the 5th switch 160 concatenation
Between DC generation module 80 and dc bus 40.
In the present embodiment, the 3rd switch the 140, the 4th switch 150 and the 5th switch 160 are at normal shape
It is conducting under state, when alternating current-direct current micro-capacitance sensor or equipment need maintenance, corresponding switch can be disconnected, with
Ensure the safety of maintainer and equipment.
Embodiment 6
The enforcement of the present embodiment is set up on the basis of above-described embodiment.
Fig. 7 shows the flowage structure figure of the alternating current-direct current intercommunication control method that the present embodiment provided, in order to just
In explanation, illustrate only part related to the present embodiment, details are as follows:
The alternating current-direct current intercommunication control method that the present embodiment is provided comprises the following steps:
S10, control module 102 judge whether the magnitude of voltage on dc bus 40 is in voltage lower limit value and electricity
Press between limit value, if then performing step S20, if otherwise performing step S30；
S20, commutation inversion module 101 quit work, and perform step S10；
S30, control module 102 judge that whether the magnitude of voltage on dc bus 40 is more than or equal to upper voltage limit
Value, if then performing step S40, if otherwise performing step S50；
S40, commutation inversion module 101 carry out inversion process to the unidirectional current on dc bus 40, and export
On ac bus 30, perform step S10；
S50, commutation inversion module 101 carry out rectification process to the alternating current on ac bus 30, and export
On dc bus 40, perform step S10.
In the present embodiment, the same with embodiment 1, when the magnitude of voltage on dc bus 40 is less than or equal to
During voltage lower limit value V2, alternating current-direct current intercommunication changer 10 enters rectification state, i.e. commutation inversion module 101
Alternating current on ac bus 30 is carried out rectification process, and exports on dc bus 40；When direct current is female
When magnitude of voltage on line 40 is more than or equal to upper voltage limit value V1, alternating current-direct current intercommunication changer 10 enters inverse
Change state, i.e. commutation inversion module 101 carry out inversion process to the unidirectional current on dc bus 40, and defeated
Go out on ac bus 30；When the magnitude of voltage on dc bus 40 is on voltage lower limit value V2 and voltage
Time between limit value V1, alternating current-direct current intercommunication changer 10 enters hot stand-by duty, i.e. commutation inversion module 101
Quit work.
Embodiment 7
The enforcement of the present embodiment is set up on the basis of above-described embodiment
In the present embodiment, as shown in Figure 8, when performing step S10 to step S50, alternating current-direct current intercommunication
Control method can also comprise the following steps:
S60, monitoring module 110 judge electric main electrical network 90 whether power down, if then performing step S70；
S70, monitoring module 110 control the first switch 120 and disconnect；
S80, monitoring module 110 judge whether the magnitude of voltage on dc bus 40 is in voltage lower limit value and electricity
Press between limit value, if then performing step S10, if otherwise performing step S90；
S90, monitoring module 110 call memory module, perform step S10.
In the present embodiment, step S60 as the step of an interrupt processing, the no matter micro-electricity of alternating current-direct current intercommunication
Net is in step S10 to any time of step S50, as long as electric main electrical network 90 enters power-down state,
Monitoring module 110 will be immediately performed step S70.Owing to energy-storage module 100 may be used for electric main electrical network
Emergency power supply during 90 power down.Therefore, in electric main electrical network 90 power down, monitoring module 110 first controls
First switch 120 disconnection, makes alternating current-direct current intercommunication micro-capacitance sensor work alone.If now on dc bus 40
Time between magnitude of voltage limit value the most under voltage and upper voltage limit value, what alternating current-direct current intercommunication micro-capacitance sensor was described is in electricity
The state that energy is superfluous or not enough, needs to call memory module to maintain stablizing of alternating current-direct current intercommunication micro-capacitance sensor.Cause
This, monitoring module 110 can call memory module by controlling second switch 130.
Further, as it is shown in figure 9, step S90 specifically may include that
S91, monitoring module 110 detect whether the state-of-charge of memory module is in charged lower limit with charged
Between higher limit, if then performing step S92, if otherwise performing step S93；
S92, monitoring module 110 control second switch 130 and turn on, and perform step S10；
S93, monitoring module 110 control second switch 130 and disconnect, and perform step S10.
In the present embodiment, in order to protect energy-storage module 100 further, extend the use of energy-storage module 100
Life-span.When the state-of-charge of energy-storage module 100 is less than charged lower limit, second switch 130 disconnects, storage
Can module 100 stop power supply；When the state-of-charge of energy-storage module 100 is more than charged higher limit, second opens
Closing 130 disconnections, energy-storage module 100 stops charging.
In the present embodiment, alternating current-direct current intercommunication control circuit is applied in alternating current-direct current intercommunication micro-capacitance sensor, in conjunction with
The threshold value set forms alternating current-direct current intercommunication control method, more can realize ac bus 30 and dc bus 40
Between the automatically controlling of power flow, be greatly improved the stability of alternating current-direct current intercommunication micro-capacitance sensor.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (9)
1. an alternating current-direct current intercommunication control circuit, connects ac bus and dc bus, it is characterised in that
Described alternating current-direct current intercommunication control circuit includes:
Alternating current-direct current intercommunication changer, it is female with described direct current that exchange end is connected described ac bus respectively with DC terminal
Line；
Bus capacitor, connects described dc bus；
Described alternating current-direct current intercommunication changer includes commutation inversion module and control module；
The exchange end of described commutation inversion module connects formation altogether with the alternating current test side of described control module and hands over
The direct current of the exchange end of direct current intercommunication changer, the DC terminal of described commutation inversion module and described control module
Electro-detection end connects the DC terminal forming described alternating current-direct current intercommunication changer, the power flow of described control module altogether
Control end and connect the controlled end of described commutation inversion module；
Described bus capacitor uses alminium electrolytic condenser, tantalum electrochemical capacitor or polarity free capacitor, described bus capacitor
Connect the DC terminal of described commutation inversion module；
Described control module judges the electricity on described dc bus according to the voltage swing on described bus capacitor
Can state；
When described energy state is superfluous state, described control module controls described commutation inversion module to institute
State the unidirectional current on dc bus and carry out inversion process, and export on described ac bus；
When described energy state is not enough state, described control module controls described commutation inversion module to institute
State the alternating current on ac bus and carry out rectification process, and export on described dc bus；
When described energy state is matching status, described control module controls described commutation inversion module and stops
Work；
Described ac bus is connected a monitoring module respectively with dc bus, and monitoring module uses and calculates with electronics
Machine is monitoring system and the software kit of core, and user remotely monitors alternating current-direct current intercommunication by monitoring module and controls
The running status of circuit, described monitoring module by gather the information of voltage on ac bus and dc bus and
Current information, directly obtains ac bus and the magnitude of voltage on dc bus, current value, and obtains further
The frequency values of voltage and electric current and harmonic wave, to monitor duty.
2. alternating current-direct current intercommunication control circuit as claimed in claim 1, it is characterised in that described rectification is inverse
Become module to include:
First electric capacity, the second electric capacity, the first inductance, the second inductance, the first NMOS tube, the 2nd NMOS
Pipe, the 3rd NMOS tube, the 4th NMOS tube, the first diode, the second diode, the 3rd diode
And the 4th diode；
First end of described first electric capacity connects the described commutation inversion of formation altogether with the first end of described first inductance
Module first exchanges end, and the second end of described first electric capacity meets formation institute altogether with the first end of described second inductance
State the second exchange end of commutation inversion module, the first exchange end of described commutation inversion module and the second exchange end
Form the exchange end of described commutation inversion module；Second end of described first inductance, a described NMOS
The source electrode of pipe, the drain electrode of described 3rd NMOS tube, the anode of described first diode are connected to described altogether
The negative electrode of three diodes, the second end of described second inductance, the source electrode of described second NMOS tube, described
The drain electrode of the 4th NMOS tube, the anode of described second diode are connected to the negative electrode of described 4th diode altogether,
The drain electrode of described first NMOS tube, the negative electrode of described first diode, the leakage of described second NMOS tube
First end of pole, the negative electrode of described second diode and described second electric capacity connects the described commutation inversion of formation altogether
First DC terminal of module, the source electrode of described 3rd NMOS tube, the anode of described 3rd diode, institute
State the source electrode of the 4th NMOS tube, the anode of described 4th diode and the second end of described second electric capacity
Altogether connect formed described commutation inversion module the second DC terminal, the first DC terminal of described commutation inversion module with
Second DC terminal forms the DC terminal of described commutation inversion module, the grid of described first NMOS tube, institute
State the grid of the second NMOS tube, the grid of described 3rd NMOS tube and described 4th NMOS tube
Grid forms the controlled end of described commutation inversion module.
3. an alternating current-direct current intercommunication micro-capacitance sensor, including dc bus, ac bus, DC generation module with
And alternative electric generation module；Described dc bus connects described DC generation module and DC load, described exchange
Bus connects described alternative electric generation module, AC load and electric main electrical network；It is characterized in that:
Described alternating current-direct current intercommunication micro-capacitance sensor also includes alternating current-direct current intercommunication control circuit as claimed in claim 1,
And exchange monitoring client is connected the monitoring of described ac bus and described dc bus respectively with direct-current supervision end
Module；
Described monitoring module is for gathering described ac bus and the information of voltage on described dc bus and electricity
Stream information.
4. alternating current-direct current intercommunication micro-capacitance sensor as claimed in claim 3, it is characterised in that described alternating current-direct current is mutual
Logical micro-capacitance sensor also includes the first switch being serially connected with between described electric main electrical network and described ac bus；
First end of described first switch connects described electric main electrical network, and the second end of described first switch is even
Connecing described ac bus, the controlled end of described first switch connects the power network switch of described monitoring module and controls
End；
The signal that described first switch controls end output according to described power network switch realizes break-make.
5. alternating current-direct current intercommunication micro-capacitance sensor as claimed in claim 4, it is characterised in that described alternating current-direct current is mutual
Logical micro-capacitance sensor also includes the energy-storage module being connected with described dc bus；
Described energy-storage module realizes discharge and recharge according to the voltage swing of described dc bus.
6. alternating current-direct current intercommunication micro-capacitance sensor as claimed in claim 5, it is characterised in that described alternating current-direct current is mutual
Logical micro-capacitance sensor also includes the second switch being serially connected with between described energy-storage module and described dc bus；
First end of described second switch connects described energy-storage module, and the second end of described second switch connects institute
Stating dc bus, the controlled end of described second switch connects the energy storage switch control terminal of described monitoring module；
The signal that described second switch exports according to described energy storage switch control terminal realizes break-make.
7. an alternating current-direct current intercommunication control method based on the alternating current-direct current intercommunication micro-capacitance sensor described in claim 6,
It is characterized in that, described alternating current-direct current intercommunication control method comprises the following steps:
A, described control module judge whether the magnitude of voltage on described dc bus is in voltage lower limit value and electricity
Press between limit value, if then performing step B, if otherwise performing step C；
B, described commutation inversion module quit work, and perform step A；
C, described control module judge that whether the magnitude of voltage on described dc bus is more than or equal to upper voltage limit
Value, if then performing step D, if otherwise performing step E；
D, described commutation inversion module carry out inversion process to the unidirectional current on described dc bus, and export
On described ac bus, perform step A；
E, described commutation inversion module carry out rectification process to the alternating current on described ac bus, and export
On described dc bus, perform step A.
8. alternating current-direct current intercommunication control method as claimed in claim 7, it is characterised in that performing step
When A is to step E, described alternating current-direct current intercommunication control method is further comprising the steps of:
F, described monitoring module judge the whether power down of described electric main electrical network, if then performing step G；
G, described monitoring module control described first and switch off；
H, described monitoring module judge whether the magnitude of voltage on described dc bus is in voltage lower limit value and electricity
Press between limit value, if then performing step A, if otherwise performing step I；
I, described monitoring module call described energy-storage module, perform step A.
9. alternating current-direct current intercommunication control method as claimed in claim 8, it is characterised in that described step I
Specifically include:
I1, described monitoring module detect whether the state-of-charge of described energy-storage module is in charged lower limit and lotus
Between electricity higher limit, if then performing step I2, if otherwise performing step I3
I2, described monitoring module control the conducting of described second switch, perform step A；
I3, described monitoring module control described second switch and disconnect, and perform step A.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008412.XA CN103762621B (en) | 2014-01-08 | 2014-01-08 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
| PCT/CN2014/092257 WO2015103907A1 (en) | 2014-01-08 | 2014-11-26 | Alternating current and direct current interworking control circuit, micro grid and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008412.XA CN103762621B (en) | 2014-01-08 | 2014-01-08 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
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| Publication Number | Publication Date |
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| CN103762621A CN103762621A (en) | 2014-04-30 |
| CN103762621B true CN103762621B (en) | 2016-09-14 |
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| CN201410008412.XA Expired - Fee Related CN103762621B (en) | 2014-01-08 | 2014-01-08 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
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| Country | Link |
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| CN (1) | CN103762621B (en) |
| WO (1) | WO2015103907A1 (en) |
Families Citing this family (9)
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| CN103762621B (en) * | 2014-01-08 | 2016-09-14 | 深圳桑达国际电源科技有限公司 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
| CN104065154B (en) * | 2014-06-09 | 2017-01-25 | 深圳微网能源管理系统实验室有限公司 | Frequency changer emergency power supply system |
| CN104518525B (en) * | 2015-01-28 | 2016-08-17 | 上海交通大学 | The Protection control system of alternating current-direct current mixing grid power current transformer and control method thereof |
| CN107171370A (en) * | 2017-07-04 | 2017-09-15 | 中国石油大学(华东) | A kind of low pressure multi-source parallel operation system architecture based on alternating current-direct current series-parallel connection bus |
| CN107453436A (en) * | 2017-09-04 | 2017-12-08 | 张家港市泓溢电源科技有限公司 | The public bus type equipment of lead-acid accumulator |
| CN108695895A (en) * | 2018-06-26 | 2018-10-23 | 山西清新新能源科技有限公司 | A kind of comprehensive energy development system and method based on micro-capacitance sensor |
| CN109301813B (en) * | 2018-11-30 | 2022-07-12 | 阳光电源（上海）有限公司 | Fault control method, controller and medium-high voltage energy conversion system |
| CN110504682B (en) * | 2019-08-15 | 2022-02-11 | 许继电气股份有限公司 | High-voltage direct-current system alternating current bus splitting operation tripping control method and device |
| CN112671016B (en) * | 2020-10-19 | 2023-08-25 | 平高集团储能科技有限公司 | Mobile energy storage system based on modularization |
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| CN102290851A (en) * | 2011-08-15 | 2011-12-21 | 许继电源有限公司 | Large-scale energy storing device and main circuit thereof |
| CN203071836U (en) * | 2013-01-22 | 2013-07-17 | 湖南天佳电子技术有限公司 | Mixed microgrid system and AC/DC coupler thereof |
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| KR100417413B1 (en) * | 2001-10-31 | 2004-02-05 | 엘지전자 주식회사 | Digital linear apparatus |
| JP2011015502A (en) * | 2009-06-30 | 2011-01-20 | Panasonic Electric Works Co Ltd | Power distribution system |
| CN102005817B (en) * | 2010-09-25 | 2014-05-07 | 中国农业大学 | Uninterruptible power supply device based on microgrid and dispatching control method thereof |
| CN102738836B (en) * | 2012-06-26 | 2014-12-03 | 中国电力科学研究院 | Alternating current and direct current hybrid micro power grid system and control method thereof |
| CN103762621B (en) * | 2014-01-08 | 2016-09-14 | 深圳桑达国际电源科技有限公司 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
| CN203690945U (en) * | 2014-01-08 | 2014-07-02 | 深圳桑达国际电源科技有限公司 | AC-DC exchange control circuit and micro power grid |
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2014
- 2014-01-08 CN CN201410008412.XA patent/CN103762621B/en not_active Expired - Fee Related
- 2014-11-26 WO PCT/CN2014/092257 patent/WO2015103907A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290851A (en) * | 2011-08-15 | 2011-12-21 | 许继电源有限公司 | Large-scale energy storing device and main circuit thereof |
| CN203071836U (en) * | 2013-01-22 | 2013-07-17 | 湖南天佳电子技术有限公司 | Mixed microgrid system and AC/DC coupler thereof |
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| WO2015103907A1 (en) | 2015-07-16 |
| CN103762621A (en) | 2014-04-30 |
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