CN107086600A - A kind of solar energy power generating three phase full bridge grid-connected inverting system - Google Patents
A kind of solar energy power generating three phase full bridge grid-connected inverting system Download PDFInfo
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Abstract
The present invention discloses a kind of solar energy power generating three phase full bridge grid-connected inverting system, including solar cell, three phase full bridge grid-connected inverting system major loop, local load, power network, three phase full bridge parallel network reverse control system, PC and machine communication interface；Three phase full bridge grid-connected inverting system major loop is connected with solar cell, local load, power network, three phase full bridge parallel network reverse control system respectively, three phase full bridge parallel network reverse control system is connected with PC and machine communication interface, and three phase full bridge parallel network reverse control system is connected with solar cell, local load, power grid wireless；The defencive function of total system of the present invention is perfect, with circuit is simple, small volume, cost it is low, the advantages of low in energy consumption, total harmonic distortion factor is low, efficiency high, security reliability high, service life is long.
Description
Technical field
The invention belongs to new energy solar energy generation technology, Power Electronic Technique and control technology field, it is related to one kind too
Positive energy photovoltaic generation three phase full bridge grid-connected inverting system.
Background technology
Solar energy is a kind of preferable regenerative resource, and following most development potentiality is solar energy power generating system
System, its exploitation are effective ways the problems such as solving energy shortage, environmental pollution and greenhouse effects, are ideals of human being
Alternative energy source, moreover, distributed solar electricity generation system is the development trend of future home electricity consumption and commercial power, it is meeting
While oneself need for electricity, moreover it is possible to be connected with main power network, the electricity more than needed sent can be sold to Utilities Electric Co., therefore,
With the development and the decline of photovoltaic cell cost of solar energy generation technology, solar energy development utilization will turn into two Pius XIs
One of the important energy source in discipline later stage.
Distributed solar electricity generation system has many advantages, such as：(1) stability and power supply matter of load supplying need not, be considered
The problem of amount.（2）, photovoltaic cell can always work at maximum power point, the whole for receiving solar energy to be sent out by power network
Electric energy, improves the efficiency of solar power generation.（3）, directly electric energy is inputted into power network, can make full use of what photovoltaic array was sent out
Electric power, eliminates the battery as energy storage link, reduces because of the energy loss that discharge and recharge is brought, and eliminates battery dimension
Shield, reduces the cost of system.（4）, distributed solar electricity generation system can play Peak Load Adjustment to utility network.
In distributed solar electricity generation system, the networking access system of combining inverter is to realize solar energy power generating
Energy transmission and the key link of conversion are carried out between main power network, its quality of power supply to main power network, system security reliability,
System protection etc. has a direct impact, and the effect of combining inverter is the output when solar photovoltaic generation system in a big way
During interior change, the friendship for the DC conversion Cheng Yuzhu power networks matching that all the time can be exported solar cell with efficiency as high as possible
Stream electricity, and send into main power network, moreover, as carrying out the grid-connected inverse of energy conversion between sun power production photovoltaic battery and main network system
Become device, the factor such as its security, reliability, inversion efficiency, manufacturing cost to the overall investment of solar photovoltaic generation system and
Income has very important status, and therefore, distributed solar electricity generation system has following requirement：（1）, realize high-quality electricity
It can change, the direct current that solar-energy photo-voltaic cell is produced is converted into satisfactory single-phase or three phase sine alternating current wave, its
The harmonic requirement of electric current and voltage meets grid-connected conditions, clear stipulaties combining inverter output waveform in such as external Grid-connection standards
Total harmonic wave factor should be less than 5%, each harmonic content is less than 3%, and with preferable dynamic characteristic.（2）, realize system
Demand for safety protection, such as input reverse-connection protection, DC over-voltage protection, output overloading protection, output short circuit protection, exchange overvoltage
Protected and device autoprotection with under-voltage protection, " isolated island ", so that it is guaranteed that the reliability of system, such as according to standard GB/T/T
19939-2005, international standard IEEE1547 and IECl727, all combining inverters must have the function of anti-islanding effect,
Isolated island must quickly and accurately cut off the electric connection of combining inverter and main power network when occurring.（3）, maximum power point with
Track, maximally utilises solar cell, to improve the efficiency of inverter.（4）, for reduction solar power system into
This, effectively can be popularized and use, and combining inverter is needed using desirably transless scheme, so as to enter one
Step improves the efficiency of combining inverter, substantially reduces the volume, weight and cost of solar photovoltaic generation system.
Therefore, a kind of small volume for meeting above-mentioned technical requirements, cost are designed low, low in energy consumption, efficiency high, security reliability
High, the distributed solar electricity generation system of service life length is the development trend of combining inverter.
The content of the invention
It is an object of the invention to provide a kind of solar energy power generating three phase full bridge grid-connected inverting system, it is provided simultaneously with
Small volume, cost are low, the features such as low in energy consumption, efficiency high, security reliability are high, service life is long, and there is provided a kind of maximum work
Rate tracing control MPPT, no industrial frequency transformer, the solar energy power generating three phase full bridge grid-connected inverting system for preventing island effect,
To make reversals that there is higher efficiency and security, and meet standard GB/T/T 19939-2005《Photovoltaic
System grid connection technical requirements》.
It is grid-connected inverse that a kind of solar energy power generating three phase full bridge grid-connected inverting system includes solar cell 1, three phase full bridge
Become main loop 2, locally load 31, power network 32, three phase full bridge parallel network reverse control system 4, PC and machine communication interface 5；Three
Mutually full-bridge grid-connected inversion system major loop 2 respectively with solar cell 1, locally load 31, power network 32, three phase full bridge parallel network reverse
Control system 4 is connected, and three phase full bridge parallel network reverse control system 4 is connected with PC and machine communication interface 5, three phase full bridge parallel network reverse
Control system 4 and solar cell 1, locally load 31, the wireless connection of power network 32, the PC and machine communication interface 5 be with it is upper
The communication interface of PC and other solar photovoltaic generation systems and machine；
Three phase full bridge grid-connected inverting system major loop 2 includes input protection switch 21, DC voltage booster circuit 22, three-phase inverting circuit
23rd, Three-phase electric-wave filter 24, three-phase grid switch 25, power network, which network, switchs 26, the input termination solar energy of input protection switch 21
The output end of battery 1, input protection switch 21, DC voltage booster circuit 22, three-phase inverting circuit 23, Three-phase electric-wave filter 24, three-phase
Grid-connected switch 25, the power network switch that networks 26 are sequentially connected in series, and the network output end of switch 26 of power network gets access to grid 32 and local load 31
Input；Local load 31 connects the output end of three-phase grid switch 25 and power network networking switch 26；
Three phase full bridge parallel network reverse control system 4 includes touch panel controller 401, three-phase grid inverter controller 402, touched
Screen 403, sample circuit 404, switch driving circuit 405, booster driving circuit 406, inverse changing driving circuit 407, three-phase inversion, electricity
Net and local load frequency detection circuit 408, battery voltage detection circuit 409, battery current detection circuit 410, booster voltage
Detect circuit 411, three-phase inversion, power network and local load voltage detection circuit 412, three-phase inversion, power network and local load electricity
Current detection circuit 413, three-phase inversion, power network and local load phase detection circuit and inversion 414；
The touch panel controller 401 is connected on three-phase grid inverter controller 402, touch-screen 403 and PC and machine communication respectively
One output end of interface 5, the output end of touch panel controller 401 connects switch driving circuit 405 and booster driving circuit 406 respectively
An input；
The output end of the sample circuit 404 connects the one of touch panel controller 401 and three-phase grid inverter controller 402 respectively
Input；
One input of the output of the three-phase grid inverter controller 402 termination inverse changing driving circuit 407；
The input protection of first output termination three phase full bridge grid-connected inverting system major loop 2 of the switch driving circuit 405 is opened
Close 21, the three-phase grid switch of the second output termination three phase full bridge grid-connected inverting system major loop 2 of switch driving circuit 405
25, the power network of the 3rd output termination three phase full bridge grid-connected inverting system major loop 2 of switch driving circuit 405, which networks, switchs 26；
The DC voltage booster circuit 22 of the output termination three phase full bridge grid-connected inverting system major loop 2 of the booster driving circuit 406
An input；
The three-phase inverting circuit 23 of the output termination three phase full bridge grid-connected inverting system major loop 2 of the inverse changing driving circuit 407
An input；
The input of the sample circuit 404 connects output end, the electricity of three phase network and local load frequency detection circuit 408 respectively
Cell voltage detection circuit 409, battery current detection circuit 410, booster voltage detection circuit 411, three-phase inversion, power network and local
Load voltage detection circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and sheet
Ground load phase detection circuit 414 and three-phase inversion.
The input protection switch 21 includes the first controllable silicon SCR 1 and the second controllable silicon SCR 2；The DC voltage booster circuit
22 include the first inductance L1, the second inductance L2, the first diode D1, the second diode D2, the first IGBT power tubes Q1, second
IGBT power tubes Q2, the first electrochemical capacitor C1 and the second electrochemical capacitor C2；The three-phase inverting circuit 23 includes the first power tube
Q3, the second power tube Q4, the 3rd power tube Q5, the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8；The three-phase
Wave filter 24 includes the first inductance L3, the second inductance L4, the 3rd inductance L5, the first electric capacity C3, the second electric capacity C4 and the 3rd electric capacity
C5；It is two-way controllable that the three-phase grid switch 25 includes the first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and first
Silicon SCR5；It is two-way that the power network networking switch 26 includes the first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and the 3rd
Controllable silicon SCR 8.
First controllable silicon SCR 1 of the input protection switch 21 and the anode of the second controllable silicon SCR 2 connect the sun respectively
The negative electrode of the positive pole and negative pole of energy battery 1, the first controllable silicon SCR 1 and the second controllable silicon SCR 2 connects DC voltage booster circuit respectively
The gate pole connection three-phase of 22 the first inductance L1 and the second inductance L2 one end, the first controllable silicon SCR 1 and the second controllable silicon SCR 2
One output end of the switch driving circuit 405 in full-bridge grid-connected inverse control system 4.
The the first inductance L1 and the second inductance L2 of the DC voltage booster circuit 22 one end connect input protection switch respectively
21 two output ends；The anode tap of the first diode D1 connects the first inductance L1 other end, second diode
D2 cathode terminal connects the second inductance L2 other end；The colelctor electrode of the first IGBT power tubes Q1 even presses the first diode D1
Anode tap, the first IGBT power tubes Q1 emitter stage connects the 2nd IGBT power tubes Q2 colelctor electrode and composition N zero line sides, the
Two IGBT power tubes Q2 emitter stage connects the second diode D2 cathode terminal, the first IGBT power tubes Q1 and the 2nd IGBT power
Booster driving circuit 406 in pipe Q2 gate terminal connection three phase full bridge parallel network reverse control system 4, first electrochemical capacitor
C1 positive terminal connects the first diode D1 cathode terminal, and the first electrochemical capacitor C1 negative pole end connects the second electrochemical capacitor C2's
Positive terminal, and N zero line sides are connected, the second electrochemical capacitor C2 negative pole end connects the second diode D2 anode tap, the first electrolysis
Electric capacity C1 positive terminal exports positive BUS DC voltages, and the second electrochemical capacitor C2 negative pole end exports negative BUS DC voltages.
The first power tube Q1, the power tube Q5 of three-phase inverting circuit 23 the 3rd and the three-phase inversion of the DC voltage booster circuit 22
First diode D1 of connection DC voltage booster circuit 22 negative electrode after the unified connection of the power tube Q7 of circuit 23 the 5th collector terminal
End and the first electrochemical capacitor C1 positive terminal, the second power tube Q4, the 4th power tube Q6 and the 6th power tube Q8 transmitting
Second diode D2 of connection DC voltage booster circuit 22 cathode terminal and the second electrochemical capacitor C2 negative pole after extreme unified connection
End；The emitter terminal of the first power tube Q3 connects the second power tube Q4 collector terminal, and connects Three-phase electric-wave filter 24
First inductance L3 one end；The emitter terminal of the 3rd power tube Q5 connects the 4th power tube Q6 collector terminal, and connects
Second inductance L4 of Three-phase electric-wave filter 24 one end；The emitter terminal of the 5th power tube Q7 connects the 6th power tube Q8 collection
Electrode tip, and connect the 3rd inductance L5 of Three-phase electric-wave filter 24 one end；The first power tube Q3, the second power tube Q4,
Three power tube Q5, the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8 all gate terminals connection three phase full bridge simultaneously
The output end of the inverse changing driving circuit 407 of net inverse control system 4.
The first inductance L3, the second inductance L4 of the Three-phase electric-wave filter 24 and the 3rd inductance L5 other end connect respectively
Behind one electric capacity C3, the second electric capacity C4 and the 3rd electric capacity C5 one end, and three inputs of three-phase grid switch 25 are connected, it is described
First electric capacity C3, the second electric capacity C4 and the 3rd electric capacity C5 other end connection power network 32 and a public N zero of local load 31
Line end.
First bidirectional triode thyristor SCR3 of three-phase grid switch 25, the second bidirectional triode thyristor SCR4 and the 3rd is two-way can
Control silicon SCR5 one end connects the first inductance L1, the second inductance L2, a 3rd inductance L3 output of Three-phase electric-wave filter 24 respectively
The three-phase input end of end, the local load 31 of its other end connection and power network networking switch 26；The first bidirectional triode thyristor SCR3,
In second bidirectional triode thyristor SCR4 and the 3rd bidirectional triode thyristor SCR5 gate pole connection three phase full bridge parallel network reverse control system 4
Another output end of switch driving circuit 405.
The power network network switch 26 the first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and the 3rd is two-way can
Control silicon SCR8 one end connects the three-phase input end of local load 31 and the three-phase output end of three-phase grid switch 25 respectively, and its is another
One end connects the three-phase input end of power network 32；The first bidirectional triode thyristor SCR7, second bidirectional triode thyristor SCR8 and the 3rd pair
Another output of switch driving circuit 405 into the gate pole connection three phase full bridge parallel network reverse control system 4 of controllable silicon SCR 8
End.
The touch panel controller 401 and three-phase grid inverter controller 402 include advanced digital processing DSP
（TMS320LF24x）Chip, the booster driving circuit 405, inverse changing driving circuit 406 and switch driving circuit 404 include can
Programmed logic CPLD chips a, input/output terminal of the touch panel controller 401 passes through on PC and the connection of machine communication interface 5
The three phase full bridge grid-connected inverting system of position machine PC or other parallel runnings, realizes that multimachine coordinates control, the touch panel control
Device 401 monitors its peak power output according to the voltage and current of the solar cell 1, and adjusts DC voltage booster circuit accordingly
The dutycycle of drive signal, implements maximal power tracing control（MPPT）；The three-phase grid inverter controller 402 implements grid-connected
Control and its take over seamlessly with two kinds of operational modes of isolated network, and according to the positive negative dc voltage of DC voltage booster circuit 22, three contraries
Become the parameter such as circuit, power network and the three-phase current, voltage, frequency, phase, the power that locally load, it is determined that exporting to three-phase inversion
The high_frequency sine wave space vector pulse width modulation SVPWM control signals of circuit.
In the three phase full bridge grid-connected inverting system major loop 2, input protection switch 21 is connected too by single-phase silicon-controlled
Positive energy battery 1, it is defeated according to the touch panel controller 401 and switch driving circuit 405 of three phase full bridge parallel network reverse control system 4
Go out control signal closure or disconnect solar cell 1 and opened with inputting protection in the three phase full bridge grid-connected inverting system major loop 2
The electric connection between 21 is closed, for being leaked electricity due to solar cell 1, anode（REC+）And negative pole（REC-）Reversely connect
When connecing, exporting low-voltage or high voltage and the failure of three phase full bridge grid-connected inverting system 4, system is protected.
The control method of above-mentioned solar energy power generating three phase full bridge grid-connected inverting system, is comprised the following steps that：
Step one：Touch panel controller 401 obtains sample circuit 404 and examined by battery voltage detection circuit 409, battery current
Slowdown monitoring circuit 410, booster voltage detection circuit 411, three-phase inversion, power network and local load voltage detection circuit 412, three contraries
Become, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase detect circuit 414 and three-phase
Inversion, power network and local load frequency detection circuit 408, the voltage of the solar cell 1 collected respectively and electric current and its
Polarity, the generating positive and negative voltage of DC voltage booster circuit 22, three-phase inversion, power network and the voltage locally loaded, electric current, phase and frequency,
Touch panel controller 401 is received after the sample information of sample circuit 404 by its internal digital processing DSP-
TMS320LF24x chips, the processing of GPLD chips obtain three-phase inverting circuit 23, the active-power P of power network 32 and local load 31,
PL, △ P and reactive power Q, QL、△Q；
Step 2：Touch panel controller 401 is examined according to sample circuit 404 by battery voltage detection circuit 409, battery current
Voltage, electric current and the DC voltage booster circuit for the solar panel 1 that slowdown monitoring circuit 410, the booster voltage detection sampling of circuit 411 are obtained
22 voltage condition, judging the solar cell 1, whether polar signal is normal over the ground, and voltage and the electric current of solar cell 1 are
It is no normal, and whether the voltage of DC voltage booster circuit 22 over-pressed, if all parameters are normal, touch panel controller 401
Output control signal connects input protection switch 21 through switch driving circuit 405, goes successively to step 3；If wherein there is parameter
Abnormal, then output control signal disconnects input protection switch 21, three-phase grid switch 25 and power network through switch driving circuit 405
Network switch 26, stops the pwm control signal of the boosted drive circuit 406 of output, and notifies three-phase grid inverter controller 402
Stop sine wave space vector pulse width modulation SVPWM signal of the output through inverse changing driving circuit 407, return to step one；
Step 3：The output control signal of touch panel controller 401 connect input protection switch 21 after, solar cell 1 it is straight
Flow in voltage access three phase full bridge grid-connected inverting system major loop 2, touch panel controller 401 exports boosted drive circuit
406 pwm control signal is controlled to DC voltage booster circuit 22, i.e. DC boosting, promotes the dc voltage boost of solar cell 1
It is ± BUS voltages to positive negative dc voltage, goes successively to step 4, wherein, DC voltage booster circuit 22 implements maximal power tracing
Control（MPPT）；
Step 4：Touch panel controller 401 detects that circuit 411 samples what is obtained according to sample circuit 404 by booster voltage
The information of DC voltage booster circuit 22, judges the positive negative dc voltage of DC voltage booster circuit 22（± BUS voltages）Whether in normal model
In enclosing, if in normal range (NR), touch panel controller 401 notifies three-phase grid inverter controller 402 to export through inversion
The SVPWM control signals of drive circuit 407, i.e. three-phase inverting circuit 23 are controlled, and are promoted positive negative dc voltage to be reverse into three and are intersected
Flow voltage, and the three-phase alternating current of the frequency of the output voltage of three-phase inverting circuit 23 and electric current, phase and amplitude and power network 32
With frequency, with phase and constant amplitude（Voltage magnitude can have certain deviation, and such as ± 3%）, go successively to step 5；If not in normal model
In enclosing, then the output control signal of touch panel controller 401 disconnects input protection switch 21, three-phase through switch driving circuit 405
Grid-connected switch 25 and power network, which network, switchs 26, stops the pwm control signal of the boosted drive circuit 406 of output, and notify three-phase
Inverter controller 402 stops SVPWM control signal of the output through inverse changing driving circuit 407, returns to step one；
Step 5：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, three-phase inversion electricity is judged
The parameter such as phase, the frequency of voltage and current that road 23 is exported whether in normal range (NR), if in normal range (NR), continue into
Enter step 6；If not in normal range (NR), output control signal disconnects three-phase grid switch 25 through switch driving circuit 405
Networked with power network and switch 26, and notify three-phase inversion controller 402 to stop space vector arteries and veins of the output through inverse changing driving circuit 407
Width modulated SVPWM control signals are rushed, step one is returned to；
Step 6：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, the electricity of power network 32 is judged
Whether the parameters such as pressure, electric current, phase and frequency are in normal range (NR), if in normal range (NR), output control signal is through opening
Close drive circuit 405 and connect power network networking switch 26, and export the space vector pulse width modulation through inverse changing driving circuit 407
SVPWM control signals make three-phase inverting circuit 23 work in PQ control models, go successively to step 7；If not in normal range (NR)
Interior, then output control signal disconnects power network networking switch 26 through switch driving circuit 405, and exports through inverse changing driving circuit 407
Space vector pulse width modulation SVPWM control signals three-phase inverting circuit 23 is worked in V/f control models, then connect
Three-phase grid switch 25, three-phase inverting circuit 23 provides electric energy by local load 31 of isolated power grid pattern, into step 8；
Step 7：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, three-phase inversion electricity is judged
The ginsengs such as phase, the frequency of voltage and current that the parameters such as phase, the frequency of voltage and current that road 23 is exported and power network 32 are inputted
Whether number is in grid-connected claimed range, if reaching grid-connected requirement, and output control signal connects three through switch driving circuit 405
Mutually grid-connected switch 25, three-phase inverting circuit 23 is run with grid-connect mode, and power network 32 is together, is that local load 31 provides electric energy,
Realize P+ △ P=PLWith Q+ △ Q=QL, then return to step one；If not reaching grid-connected requirement, output control signal warp
Switch driving circuit 405 disconnects three-phase grid switch 25 and power network networks and switchs 26, and notifies three-phase inversion controller 402 to stop
The SVPWM control signals through inverse changing driving circuit 407 are exported, step one is returned to；
Step 8：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, local load 31 is judged
Apparent energy whether be less than or equal to the apparent energy that three-phase inverting circuit 23 is exported, if less than equal to then returning to step
One；If it is greater, then output control signal disconnects three-phase grid switch 25 through switch driving circuit 405 and power network networks and switched
26, and notify three-phase inversion controller 402 to stop SVPWM control signal of the output through inverse changing driving circuit 407, return to step
One.
Compared with prior art, its advantage is as follows by the present invention：First, the present invention uses three-phase full-bridge inverting circuit
Topological structure and its sine wave space vector pulse width modulation SVPWM control technologies, three phase full bridge parallel network reverse can be made
The volume of system diminishes, weight saving, cost reduction, possess being required for parallel network reverse standard, and meet parallel network reverse
Bright, perfect all kinds of of national standard, such as soft start, voltage unbalance factor, current harmonics, DC current injection, anti-reverse, back flash
Protection and telecommunication etc., its pure sine wave produced are easily adjusted, and the harm of high-frequency harmonic will not be caused to three phase network.
Second, the present invention is changed using double Boost circuits and maximum power point tracing method by touch panel controller
The dutycycle of inversion of direct current booster circuit drive signal, while monitoring the output voltage of booster circuit, this acquisition maximum power point
Method only need to track solar cell voltage, eliminate complexity calculating and compare.
3rd, the present invention uses power network networking switching technique, it is to avoid during distributed generation system island effect, Suo You electricity
The circuit Issues on Static Electrification that source disconnects, is prevented to related personnel（Such as power network maintenance personal and user）Bring the danger of electric shock.
4th, the present invention uses intellectual monitoring and control technology, realizes grid-connected and two kinds of operational modes of isolated network quick nothings
Peaceful slip control system is changed in seaming and cutting, and system is not powered off during the conversion of grid-connected and isolated network, considers that distributed generation system is present without special
Island effect.
5th, whole system small volume, cost are low, and low in energy consumption, efficiency high, security reliability are high, service life length and set
Count the advantages of surplus is big.
Brief description of the drawings
Fig. 1 is the structured flowchart of the solar energy power generating three phase full bridge grid-connected inverting system of the embodiment of the present invention 1；
Fig. 2 is the main loop circuit figure of the solar energy power generating three phase full bridge grid-connected inverting system of the embodiment of the present invention 1；
The drive signal and sine wave that Fig. 3 is power tube Q3, Q4, Q5, Q6, Q7 and Q8 in the inverter circuit of the embodiment of the present invention 1 are defeated
Go out oscillogram.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
A kind of solar energy power generating three phase full bridge grid-connected inverting system, as shown in figure 1, including solar cell 1, three phase full bridge
Grid-connected inverting system major loop 2, locally load 31, power network 32, three phase full bridge parallel network reverse control system 4, PC and machine communication connect
Mouth 5；Three phase full bridge grid-connected inverting system major loop 2 loads 31, power network 32, three phase full bridge simultaneously with solar cell 1, locally respectively
Net inverse control system 4 is connected, and three phase full bridge parallel network reverse control system 4 is connected with PC and machine communication interface 5, and three phase full bridge is simultaneously
Net inverse control system 4 and solar cell 1, locally load 31, the wireless connection of power network 32, PC and machine communication interface 5 be with it is upper
The communication interface of position PC and other solar photovoltaic generation systems and machine；
Three phase full bridge grid-connected inverting system major loop 2 includes input protection switch 21, DC voltage booster circuit 22, three-phase inverting circuit
23rd, Three-phase electric-wave filter 24, three-phase grid switch 25, power network, which network, switchs 26, the input termination solar energy of input protection switch 21
The output end of battery 1, input protection switch 21, DC voltage booster circuit 22, three-phase inverting circuit 23, Three-phase electric-wave filter 24, three-phase
Grid-connected switch 25, the power network switch that networks 26 are sequentially connected in series, and the network output end of switch 26 of power network gets access to grid 32 and local load 31
Input；Local load 31 connects the output end of three-phase grid switch 25 and power network networking switch 26；
Three phase full bridge parallel network reverse control system 4 includes touch panel controller 401, three-phase grid inverter controller 402, touched
Screen 403, sample circuit 404, switch driving circuit 405, booster driving circuit 406, inverse changing driving circuit 407, three-phase inversion, electricity
Net and local load frequency detection circuit 408, battery voltage detection circuit 409, battery current detection circuit 410, booster voltage
Detect circuit 411, three-phase inversion, power network and local load voltage detection circuit 412, three-phase inversion, power network and local load electricity
Current detection circuit 413, three-phase inversion, power network and local load phase detection circuit and inversion 414；
Touch panel controller 401 is connected on three-phase grid inverter controller 402, touch-screen 403 and PC and machine communication interface respectively
5 output end, the output end of touch panel controller 401 connects the one of switch driving circuit 405 and booster driving circuit 406 respectively
Input；
The output end of sample circuit 404 connects an input of touch panel controller 401 and three-phase grid inverter controller 402 respectively
End；
One input of the output termination inverse changing driving circuit 407 of three-phase grid inverter controller 402；
The input protection switch 21 of first output termination three phase full bridge grid-connected inverting system major loop 2 of switch driving circuit 405,
The three-phase grid switch 25 of second output termination three phase full bridge grid-connected inverting system major loop 2 of switch driving circuit 405, switch
The power network of 3rd output termination three phase full bridge grid-connected inverting system major loop 2 of drive circuit 405, which networks, switchs 26；
The one of the DC voltage booster circuit 22 of the output termination three phase full bridge grid-connected inverting system major loop 2 of booster driving circuit 406
Input；
The one of the three-phase inverting circuit 23 of the output termination three phase full bridge grid-connected inverting system major loop 2 of inverse changing driving circuit 407
Input；
The input of sample circuit 404 connects output end, the battery electricity of three phase network and local load frequency detection circuit 408 respectively
Pressure detection circuit 409, battery current detection circuit 410, booster voltage detection circuit 411, three-phase inversion, power network and local load
Voltage detecting circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local negative
Carry phase detecting circuit 414 and three-phase inversion.
As shown in Fig. 2 input protection switch 21 includes the first controllable silicon SCR 1 and the second controllable silicon SCR 2；The direct current liter
Volt circuit 22 include the first inductance L1, the second inductance L2, the first diode D1, the second diode D2, the first IGBT power tubes Q1,
2nd IGBT power tubes Q2, the first electrochemical capacitor C1 and the second electrochemical capacitor C2；The three-phase inverting circuit 23 includes the first work(
Rate pipe Q3, the second power tube Q4, the 3rd power tube Q5, the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8；It is described
Three-phase electric-wave filter 24 includes the first inductance L3, the second inductance L4, the 3rd inductance L5, the first electric capacity C3, the second electric capacity C4 and the 3rd
Electric capacity C5；It is two-way that the three-phase grid switch 25 includes the first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and first
Controllable silicon SCR 5；The power network networking switch 26 includes the first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and the 3rd
Bidirectional triode thyristor SCR8.
As shown in Figure 2,3, input protection switch 21 includes the first controllable silicon SCR 1 and the second controllable silicon SCR 2, and according to three
The amount of capacity of mutually full-bridge grid-connected inversion system design selects the performance parameter of controllable silicon；The first wherein described controllable silicon SCR 1
Connect the positive pole and negative pole of solar cell 1, the described He of the first controllable silicon SCR 1 respectively with the anode of the second controllable silicon SCR 2
The negative electrode of second controllable silicon SCR 2 connects the first inductance L1 and the second inductance L2 of DC voltage booster circuit 22 one end respectively, described
The first controllable silicon SCR 1 and the second controllable silicon SCR 2 gate pole connection three phase full bridge parallel network reverse control system 4 in switch drive
One output end of dynamic circuit 405.
Input protection switch 21 operation principle be：Leak electricity when solar cell 1, battery plus-negative plate reversal connection, overvoltage and
It is under-voltage（The normal output voltage VDC of the solar cell 1 of the present embodiment is 200V-272V）And three phase full bridge parallel network reverse
When each circuit breaks down in main loop 2, then touch panel controller 401 outputs a control signal to two controllable silicon SCRs 1
With SCR2 gate pole, so as to disconnect the electrical connection of solar cell 1 and three phase full bridge grid-connected inverting system major loop 2, implement
The protective effect of solar cell 1 and solar photovoltaic generation system.
As shown in Figure 2,3, DC voltage booster circuit includes the first inductance L1, the second inductance L2, the first diode D1, the two or two
Pole pipe D2, the first IGBT power tubes Q1, the 2nd IGBT power tubes Q2, the first electrochemical capacitor C1 and the second electrochemical capacitor C2；Wherein
The first inductance L1 and the second inductance L2 one end connect two output ends of input protection switch 21 respectively；Described 1st
Pole pipe D1 anode tap connects the first inductance L1 other end, and the cathode terminal of the second diode D2 connects the second inductance L2's
The other end；The colelctor electrode of the first IGBT power tubes Q1 is even by the first diode D1 anode tap, the first IGBT power tubes Q1
Emitter stage connect the 2nd IGBT power tubes Q2 colelctor electrode and composition N zero line sides, the 2nd IGBT power tubes Q2 emitter stage connects
Connect the gate terminal connection three phase full bridge of the second diode D2 cathode terminal, the first IGBT power tubes Q1 and the 2nd IGBT power tubes Q2
Booster driving circuit 406 in parallel network reverse control system 4, the positive terminal of the first electrochemical capacitor C1 connects the first diode
D1 cathode terminal, the first electrochemical capacitor C1 negative pole end connects the second electrochemical capacitor C2 positive terminal, and connects N zero line sides, the
Two electrochemical capacitor C2 negative pole end connects the second diode D2 anode tap, and the first electrochemical capacitor C1 positive terminal output is positive
BUS DC voltages, the second electrochemical capacitor C2 negative pole end exports negative BUS DC voltages；The touch panel controller 401 is applied
Plus frequency fix and dutycycle increase and the pulse switch pwm signal that reduces to the first IGBT power tubes Q1 and the 2nd IGBT power
Pipe Q2, switches to will be coupled into the first inductance L1 and the second inductance L2 by the switch of power tube Q1 and Q2 conducting and cut-off
An input solar cell 1 output voltage VDC（The present embodiment is 200V-272V）Be converted to from the first diode D1
Cathode terminal output and the second diode D2 anode tap export ± BUS DC voltages（The present embodiment is ± 400VDC）.
The operation principle of DC voltage booster circuit 22 is：When the first power tube Q1 and the second power tube Q2 is turned on, the first electricity
Feeling L1 and the second inductance L2 electric current increases, stored energy, and now, the first electrochemical capacitor C1 and the second electrochemical capacitor C2 are by putting
Electric form provides energy to three-phase inverting circuit 23；When the first power tube Q1 and the second power tube Q2 is turned off, the first inductance L1
Exported to the back-end from the first diode D1 and the second diode D2 with the second inductance L2 electric current, electric current reduces, on the one hand, to three
Phase inverter circuit 23 provides energy, is on the other hand charged to the first electrochemical capacitor C1 and the second electrochemical capacitor C2.So, is passed through
One power tube Q1 and the second power tube Q2 ceaselessly turn-on and turn-off, will make DC voltage booster circuit 22 produce positive and negative direct current output
Voltage（± BUS voltages）, therefore, the 200V-272V conversions output that DC voltage booster circuit 22 can export solar cell 1 ±
400VDC ± BUS DC voltages.
The maximal power tracing control algolithm of the present invention uses simple and effective perturbation observation method, and the program that it is worked out is easy
Realized in three-phase grid inverter controller 4.Its operation principle is：Changed by the disturbance to the output voltage of solar cell 1
Become the power output of battery, so that the correctness in voltage disturbance direction is judged with the change of power output, and Boost is electric
Road is as a variable load, by adjusting the first power tube Q1 of Boost circuit and accounting for for the second power tube Q2 switch times
Sky can make solar cell 1 work in different operating points than D.Specifically adjusting method is：The first step, touch panel controller
401 gather the voltage U (k) and electric current I (k) of solar cell 1 in real time, and calculate its power output P (k)=U (k) I (k), then
It is compared with the voltage U (k-1) and power P (k-1) of last time, obtains voltage difference △ U (k)=U (k)-U (k-1) and difference power
Value △ P (k)=P (k)-P (k-1), and two differences product △ PU (k)=△ U (k) △ P (k)；Second step, touch panel control
Device 401 processed judges △ PU (k), such as △ PU (k)>0, then it is Uref=U (k)+Ustep to give desired voltage values；Such as △ PU (k)<0,
Desired voltage values are then given for Uref=U (k)-Ustep, in formula, Ustep is given voltage steps value；3rd step, touch surface
Plate controller 401 is E according to the given desired voltage values Uref and sampled voltage U (k) of solar cell 1 carry out difference operation
(k)=Uref-U (k), passing ratio integration（PI）Control algolithm calculates the dutycycle D of control signal, and voltage is expected when given
During value reduction, calculating the dutycycle D reached will increase, and make Boost circuit switch-closed time elongated, so that the first inductance L1
It will increase with the second inductance L2 electric current, according to the working characteristics of solar cell, electric current becomes big, and voltage will be reduced, defeated
The power gone out will be close to maximum power point；When given desired voltage values are raised, calculating the dutycycle D reached will subtract
It is small, reduce Boost circuit switch-closed time, so that the first inductance L1 and the second inductance L2 electric current will reduce, according to
The working characteristics of solar cell, electric current diminishes, and voltage will increase, and the power of output will be close to maximum power point, from
And reach the purpose of the regulation power output of solar cell 1.When power tracking is to maximum power point, give desired voltage values with
Actual voltage value is equal, the degree of regulation very little of power output, and the dutycycle D of control signal keeps stable.
As shown in Figure 2,3, three-phase inverting circuit 23 include the first power tube Q3, the second power tube Q4, the 3rd power tube Q5,
4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8；Wherein described first power tube Q1, the 3rd power tube Q5 and
First diode D1 of connection DC voltage booster circuit 22 cathode terminal and first after the unified connection of five power tube Q7 collector terminal
Electrochemical capacitor C1 positive terminal, the second power tube Q4, the 4th power tube Q6 and the 6th power tube Q8 emitter terminal are unified
The second diode D2 of DC voltage booster circuit 22 cathode terminal and the second electrochemical capacitor C2 negative pole end is connected after connection；Described
One power tube Q3 emitter terminal connects the second power tube Q4 collector terminal, and connects the first inductance L3 of Three-phase electric-wave filter 24
One end；The emitter terminal of the 3rd power tube Q5 connects the 4th power tube Q6 collector terminal, and connects Three-phase electric-wave filter
24 the second inductance L4 one end；The emitter terminal of the 5th power tube Q7 connects the 6th power tube Q8 collector terminal, and
Connect the 3rd inductance L5 of Three-phase electric-wave filter 24 one end；The first power tube Q3, the second power tube Q4, the 3rd power tube
Q5, the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8 all gate terminals connection three phase full bridge parallel network reverse control
The output end of inverse changing driving circuit 407 in system 4 processed.
The operation principle of three-phase inverting circuit 23 is：As shown in figure 3, the first power tube Q3, the second power tube Q4, the 3rd work(
In rate pipe Q5, the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8 sinusoidal wave pulse drive waveforms, high level table
Show six power tube conductings, low level represents six power tube cut-offs, wherein the first power tube Q3 and the second power tube Q4,
3rd power tube Q5 and the 4th power tube Q6, the 5th power tube Q7 and the 6th power tube Q8 constitute three bridge arms.First, each bridge arm
Lower power tube is alternate conduction；Secondly, in a sinusoidal cycles, each bridge arm lower power tube turns on 180 °；3rd, each bridge
The phase difference that arm is begun to turn on is 120 °, and any moment has three bridge arms to simultaneously turn on.As shown in figure 3, when the first power tube
During Q3, the 3rd power tube Q5, the 5th power tube Q7 cut-offs, then the second power tube Q4, the 4th power tube Q6, the 6th power tube Q8
Turned on and ended with fixed frequency but dutycycle difference；As the second power tube Q4, the 4th power tube Q6, the 6th power tube Q8
During cut-off, then the first power tube Q3, the 3rd power tube Q5, the 5th power tube Q7 are led with fixed frequency but dutycycle difference
Logical and cut-off.Such conducting and cut-off mode cause in the first power tube Q3, the second power tube Q4 and Three-phase electric-wave filter 24
Waveform is waveform Va shown in Fig. 3, the 3rd power tube Q5, the 4th power tube Q6 and three-phase filtering on first inductance L3 tie point a
On the tie point b of the second inductance L4 in device 24 waveform be waveform Vb shown in Fig. 3, the 5th power tube Q7, the 6th power tube Q8 and
Waveform is waveform Vc shown in Fig. 3 on the tie point c of the 3rd inductance L4 in Three-phase electric-wave filter 24.In one embodiment, Va,
Vb, Vc waveform are that high level is+400V, and low level is -400V, and its intermediate value is 0V output sine wave pulse width modulated SPWM
Signal.
As shown in Figure 2,3, Three-phase electric-wave filter 24 includes the first inductance L3, the second inductance L4, the 3rd inductance L5, the first electric capacity
C3, the second electric capacity C4 and the 3rd electric capacity C5；Wherein described first inductance L3, the second inductance L4 and the 3rd inductance the L5 other end point
Behind the one end for not connecting the first electric capacity C3, the second electric capacity C4 and the 3rd electric capacity C5, and it is defeated to connect three-phase grid switch three of 25
Enter end, the one of the first electric capacity C3, the second electric capacity C4 and the 3rd electric capacity C5 other end connection power network 32 and local load 31
Individual public N zero line sides.
The operation principle of Three-phase electric-wave filter 24 is：As shown in figure 3, passing through the first inductance L3, the second inductance L4, the 3rd inductance
L5 and the first electric capacity C3, the second electric capacity C4 and the 3rd electric capacity C5 filtering, by voltage Va, Vb, the radio-frequency component in Vc is filtered off,
The output end of Three-phase electric-wave filter 24 just obtains three phase sine the waveform VA, VB, VC that phase difference as shown in Figure 3 is 120 °.One
In individual embodiment, VA, VB, VC output frequency is 50 ± 0.2Hz, and voltage is 220V ± 5%, Xiang Wei Cha≤30', current harmonics
THD≤3%, the rated current of DC current injection Zhi≤0.5%.Due to three-phase inverting circuit 23 driving SPWM control signals and
Va, Vb, Vc waveform are high-frequency signal, so in Fig. 3, by six power tube Q3, Q4, Q5, Q6, Q7, Q8 and Va, Vb, Vc height
Obtain illustrating three-phase sine-wave waveform after the filtering of frequency waveform frequency.High frequency waveforms each cycle time is equal（I.e. frequency is fixed, this
It is 20kHz in embodiment）, but the time ratio for turning on and ending every time（That is dutycycle）It is different.Dutycycle is become by small
Diminish again greatly, and the rule changed follows SPWM rule.So, the first inductance L3 and the first electric capacity C3, the second inductance are passed through
L4 and the second electric capacity C4, the 3rd inductance L5 and the 3rd electric capacity C5 are filtered after HFS, and remaining low frequency part is exactly 50Hz
Sine wave.Moreover, designed by the three-phase grid inverter controller 402 in three phase full bridge parallel network reverse control system 4 three
The feedback control of the output voltage of phase inverter circuit 23, can in real time be adjusted according to the size of three-phase output voltage six power tube Q3,
The dutycycle of Q4, Q5, Q6, Q7, Q8 drive signal, so as to ensure the three-phase output voltage VA, VB, VC of three-phase inverting circuit 23
In certain accuracy rating.Moreover, by the control strategy of three-phase grid inverter controller 402, making three bridge arms start to lead
Logical phase difference is 120 °, and any moment has three bridge arms to simultaneously turn on.Therefore, the output end of Three-phase electric-wave filter 24 is just obtained
Phase difference as shown in Figure 3 is 120 ° of three phase sine waveform VA, VB, VC.
As shown in Figure 2,3, three-phase grid switch 25 include the first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and
First bidirectional triode thyristor SCR5；Wherein described first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and the 3rd is two-way can
Control silicon SCR5 one end connects the first inductance L1, the second inductance L2, a 3rd inductance L3 output of Three-phase electric-wave filter 24 respectively
The three-phase input end of end, the local load 31 of its other end connection and power network networking switch 26；The first bidirectional triode thyristor SCR3,
In second bidirectional triode thyristor SCR4 and the 3rd bidirectional triode thyristor SCR5 gate pole connection three phase full bridge parallel network reverse control system 4
Another output end of switch driving circuit 405.
Three-phase grid switch 25 operation principle be：The touch panel controller of three phase full bridge parallel network reverse control system 4
401 pass through output voltage of the sample circuit 404 to DC boosting voltage 22（± BUS voltages）, three-phase inversion output and power network 32
The parameter such as voltage, electric current, frequency and phase detected and controlled, i.e. it is the first bidirectional triode thyristor SCR3, second two-way controllable
Silicon SCR4 and the first bidirectional triode thyristor SCR5 switch by three phase full bridge parallel network reverse control system 4 touch panel controller
401 are controlled.When the first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and the first bidirectional triode thyristor SCR5 are turned on
When, the output of Three-phase electric-wave filter 24（That is sine wave VA, VB, VC）Networked with local load 31 and power network and switch 26 electric connections；
When the first bidirectional triode thyristor SCR3, the second bidirectional triode thyristor SCR4 and the first bidirectional triode thyristor SCR5 end, then three-phase is filtered
Ripple device 24 disconnects with local load 31 and power network networking switch 26.For example, when DC voltage booster circuit 22 and three-phase inverting circuit
23 break down suddenly, then the touch panel controller 401 of three phase full bridge parallel network reverse control system 4 sends control and referred to immediately
Order, closes three controllable silicon SCRs 3, SCR4 and SCR5 that three-phase grid switchs 25.Because the zero-time of controllable silicon switchs spy
Property, then three-phase inverting circuit 23 is turned off with local load 31 and power network 32, realizes three phase full bridge grid-connected inverting system master
Gapless between loop 2 and local load 31 and power network 32 switches.Conversely, when three phase full bridge grid-connected inverting system major loop 2
When recovering normal work, three-phase grid switch 25 can equally realize that three phase full bridge grid-connected inverting system is seamlessly cut into power network
In 31.
As shown in Figure 2,3, power network network switch 26 include the first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and
3rd bidirectional triode thyristor SCR8；Wherein described first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and the 3rd is two-way can
Control silicon SCR8 one end connects the three-phase input end of local load 31 and the three-phase output end of three-phase grid switch 25 respectively, and its is another
One end connects the three-phase input end of power network 31；The first bidirectional triode thyristor SCR7, second bidirectional triode thyristor SCR8 and the 3rd pair
Another output of switch driving circuit 405 into the gate pole connection three phase full bridge parallel network reverse control system 4 of controllable silicon SCR 8
End.
Power network network switch 26 operation principle be：The touch panel controller of three phase full bridge parallel network reverse control system 4
401 Three-phase electric-wave filter 24 is exported by sample circuit 404, voltage, electric current, frequency and the phase of locally load 31 and power network 32
Detected and controlled etc. parameter, i.e. the first bidirectional triode thyristor SCR6, the second bidirectional triode thyristor SCR7 and the first bidirectional triode thyristor
SCR8 switch is controlled by the touch panel controller 401 of three phase full bridge parallel network reverse control system 4.When three controllable silicons
When SCR6, SCR7 and SCR8 are turned on, power network 32 is electrically connected with local load 31 and three-phase grid switch 25；When three it is controllable
When silicon SCR6, SCR7 and SCR8 end, then power network 32 electrically disconnects with local load 31 and three-phase grid switch 25.For example,
When three phase network 32 breaks down or produced suddenly isolated island, or even power-off suddenly, or three phase full bridge grid-connected inverting system master time
Road 2 is broken down suddenly, or the local overload of load 31 and short circuit, then the touch surface of three phase full bridge parallel network reverse control system 4
Plate controller 401 sends control instruction immediately, closes three controllable silicon SCRs 3, SCR4 and the SCR5 of power network networking switch 26.
Due to the zero-time switching characteristic of controllable silicon, then power network 32 is turned off with three-phase inverting circuit 23 and local load 31, is realized
Gapless switching between power network 32 and three phase full bridge grid-connected inverting system major loop 2 and local load 31.Conversely, working as three-phase
The institute of power network 32 is faulty, when either three phase full bridge grid-connected inverting system major loop 2 or local load 31 recover normal work,
Power network networking switch 26 can equally realize that power network 32 is seamlessly cut into three phase full bridge grid-connected inverting system major loop 2.
The control method of above-mentioned solar energy power generating three-phase grid-connected inverting system, is comprised the following steps that：
Step one：Touch panel controller 401 obtains sample circuit 404 and examined by battery voltage detection circuit 409, battery current
Slowdown monitoring circuit 410, booster voltage detection circuit 411, three-phase inversion, power network and local load voltage detection circuit 412, three contraries
Become, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase detect circuit 414 and three-phase
Inversion, power network and local load frequency detection circuit 408, the voltage of the solar cell 1 collected respectively and electric current and its
Polarity, the generating positive and negative voltage of DC voltage booster circuit 22, three-phase inversion, power network and the voltage locally loaded, electric current, phase and frequency,
Touch panel controller 401 receive after the sample information of sample circuit 404 by its internal digital processing dsp chip,
The processing of GPLD chips obtains active-power P, the P of three-phase inverting circuit 23, power network 32 and local load 31L, △ P and reactive power
Q、QL、△Q；
Step 2：Touch panel controller 401 is examined according to sample circuit 404 by battery voltage detection circuit 409, battery current
Voltage, electric current and the DC voltage booster circuit for the solar panel 1 that slowdown monitoring circuit 410, the booster voltage detection sampling of circuit 411 are obtained
22 voltage condition, judging the solar cell 1, whether polar signal is normal over the ground, and voltage and the electric current of solar cell 1 are
It is no normal, and whether the voltage of DC voltage booster circuit 22 over-pressed, if all parameters are normal, touch panel controller 401
Output control signal connects input protection switch 21 through switch driving circuit 405, goes successively to step 3；If wherein there is parameter
Abnormal, then output control signal disconnects input protection switch 21, three-phase grid switch 25 and power network through switch driving circuit 405
Network switch 26, stops the pwm control signal of the boosted drive circuit 406 of output, and notifies three-phase grid inverter controller 402
Stop sine wave space vector pulse width modulation SVPWM signal of the output through inverse changing driving circuit 407, return to step one,
For example, whether the cell voltage VDC of solar cell 1 is in setting range, between such as 200V-276V, positive pole and negative pole
Whether correct, the electric current of solar cell 1 is set according to DC voltage booster circuit 22, three-phase inverting circuit 23, Three-phase electric-wave filter 24
Meter amount of capacity is set in prescribed limit, and the leakage current of solar cell 1 is also in setting range, such as leakage current≤10mA,
If these parameters are all normal, step 3 is performed, step one is otherwise returned to；
Step 3：The output control signal of touch panel controller 401 connect input protection switch 21 after, solar cell 1 it is straight
Flow in voltage access three phase full bridge grid-connected inverting system major loop 2, touch panel controller 401 exports boosted drive circuit
406 pwm control signal is controlled to DC voltage booster circuit 22, i.e. DC boosting, promotes the dc voltage boost of solar cell 1
It is ± BUS voltages to positive negative dc voltage, goes successively to step 4, wherein, DC voltage booster circuit 22 implements maximal power tracing
Control（MPPT）；
Step 4：Touch panel controller 401 detects that circuit 411 samples what is obtained according to sample circuit 404 by booster voltage
The information of DC voltage booster circuit 22, judges the positive negative dc voltage of DC voltage booster circuit 22（± BUS voltages）Whether in normal model
In enclosing, if in normal range (NR), touch panel controller 401 notifies three-phase grid inverter controller 402 to export through inversion
The SVPWM control signals of drive circuit 407, i.e. three-phase inverting circuit 23 are controlled, and are promoted positive negative dc voltage to be reverse into three and are intersected
Flow voltage, and the three-phase alternating current of the frequency of the output voltage of three-phase inverting circuit 23 and electric current, phase and amplitude and power network 32
With frequency, with phase and constant amplitude（Voltage magnitude can have certain deviation, and such as ± 3%）, go successively to step 5；If not in normal model
In enclosing, then the output control signal of touch panel controller 401 disconnects input protection switch 21, three-phase through switch driving circuit 405
Grid-connected switch 25 and power network, which network, switchs 26, stops the pwm control signal of the boosted drive circuit 406 of output, and notify three-phase
Inverter controller 402 stops SVPWM control signal of the output through inverse changing driving circuit 407, returns to step one, for example,
Positive negative dc voltage ± the BUS of DC voltage booster circuit 22 is in setting range in the ± 320- ± 400VDC of position, if these parameters
It is all normal, then perform step 5；If wherein a certain parameter is abnormal, such as ± BUS electric voltage over press（More than 400V）Or it is under-voltage
（Less than -320V）, then disconnect input protection switch 21, three-phase grid switch 25 and power network and network and switch 26, stop output through rising
The pwm control signal of drive circuit 406 is pressed, and notifies three-phase inversion controller 402 to stop output through inverse changing driving circuit 407
SVPWM control signals, return to step one；
Step 5：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, three-phase inversion electricity is judged
The parameter such as phase, the frequency of voltage and current that road 23 is exported whether in normal range (NR), if in normal range (NR), continue into
Enter step 6；If not in normal range (NR), output control signal disconnects three-phase grid switch 25 through switch driving circuit 405
Networked with power network and switch 26, and notify three-phase inversion controller 402 to stop space vector arteries and veins of the output through inverse changing driving circuit 407
Width modulated SVPWM control signals are rushed, step one is returned to；For example, this distributed solar electricity generation system meets power network
Standard GB/T/T 19939-2005 of 32 interconnections and international standard IEEE1547 and IEC1747 technical conditions, three-phase inversion
The rated voltage of output voltage Bo Dong of circuit 23≤± 5%, frequency range in 50Hz ± 0.2Hz, phase difference setting range≤30 ',
Current harmonics THD≤± 3%, direct current stream injects the parameters such as≤± 0.5% rated current, if these parameters are all normal, holds
Row step 6；If wherein a certain parameter is abnormal, disconnects three-phase grid switch 25 and power network networks and switchs 26, and notify three
Phase inverter controller 402 stops space vector pulse width modulation SVPWM control signal of the output through inverse changing driving circuit 407,
Return to step one；
Step 6：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, the electricity of power network 32 is judged
Whether the parameters such as pressure, electric current, phase and frequency are in normal range (NR), if in normal range (NR), output control signal is through opening
Close drive circuit 405 and connect power network networking switch 26, and export the space vector pulse width modulation through inverse changing driving circuit 407
SVPWM control signals make three-phase inverting circuit 23 work in PQ control models, go successively to step 7；If not in normal range (NR)
Interior, then output control signal disconnects power network networking switch 26 through switch driving circuit 405, and exports through inverse changing driving circuit 407
Space vector pulse width modulation SVPWM control signals three-phase inverting circuit 23 is worked in V/f control models, then connect
Three-phase grid switch 25, three-phase inverting circuit 23 provides electric energy by local load 31 of isolated power grid pattern, into step 8；
Step 7：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, three-phase inversion electricity is judged
The ginsengs such as phase, the frequency of voltage and current that the parameters such as phase, the frequency of voltage and current that road 23 is exported and power network 32 are inputted
Number whether in grid-connected claimed range, that is, the standard GB/T interconnected /T 19939-2005 and international standard IEEE1547 and
IEC1747 technical conditions, if reaching grid-connected requirement, output control signal connects three-phase simultaneously through switch driving circuit 405
Net switch 25, three-phase inverting circuit 23 is run with grid-connect mode, and power network 32 is together, is that local load 31 provides electric energy, i.e., real
Existing P+ △ P=PLWith Q+ △ Q=QL, then return to step one；If not reaching grid-connected requirement, output control signal is through switch
Drive circuit 405 disconnects three-phase grid switch 25 and power network networks and switchs 26, and notifies three-phase inversion controller 402 to stop output
SVPWM control signals through inverse changing driving circuit 407, return to step one；
Step 8：Touch panel controller 401 is examined according to sample circuit 404 by three-phase inversion, power network and local load voltage
Slowdown monitoring circuit 412, three-phase inversion, power network and local load current detection circuit 413, three-phase inversion, power network and local load phase
The sampled data of circuit 414 and three-phase inversion, power network and local load frequency detection circuit 408 is detected, local load 31 is judged
Apparent energy whether be less than or equal to the apparent energy that three-phase inverting circuit 23 is exported, if less than equal to then returning to step
One；If it is greater, then output control signal disconnects three-phase grid switch 25 through switch driving circuit 405 and power network networks and switched
26, and notify three-phase inversion controller 402 to stop SVPWM control signal of the output through inverse changing driving circuit 407, return to step
One.
Claims (9)
1. a kind of solar energy power generating three phase full bridge grid-connected inverting system, it is characterised in that including solar cell（1）, three
Mutually full-bridge grid-connected inversion system major loop（2）, local load（31）, power network（32）, three phase full bridge parallel network reverse control system
（4）, PC and machine communication interface（5）；Three phase full bridge grid-connected inverting system major loop（2）Respectively with solar cell（1）, it is local negative
Carry（31）, power network（32）, three phase full bridge parallel network reverse control system（4）Connection, three phase full bridge parallel network reverse control system（4）With
PC and machine communication interface（5）Connection, three phase full bridge parallel network reverse control system（4）With solar cell（1）, local load
（31）, power network（32）Wireless connection；
Three phase full bridge grid-connected inverting system major loop（2）Including input protection switch（21）, DC voltage booster circuit（22）, three contraries
Become circuit（23）, Three-phase electric-wave filter（24）, three-phase grid switch（25）, power network network switch（26）, input protection switch（21）
Input termination solar cell（1）Output end, input protection switch（21）, DC voltage booster circuit（22）, three-phase inversion electricity
Road（23）, Three-phase electric-wave filter（24）, three-phase grid switch（25）, power network network switch（26）It is sequentially connected in series, power network, which networks, to be switched
（26）Output end get access to grid（32）With local load（31）Input；Local load（31）Connect three-phase grid switch（25）With
Power network, which networks, to be switched（26）Output end；
Three phase full bridge parallel network reverse control system（4）Including touch panel controller（401）, three-phase grid inverter controller
（402）, touch-screen（403）, sample circuit（404）, switch driving circuit（405）, booster driving circuit（406）, inversion driving
Circuit（407）, three-phase inversion, power network and locally load frequency detection circuit（408）, battery voltage detection circuit（409）, battery
Current detection circuit（410）, booster voltage detection circuit（411）, three-phase inversion, power network and local load voltage detection circuit
（412）, three-phase inversion, power network and local load current detection circuit（413）, three-phase inversion, power network and local load phase inspection
Slowdown monitoring circuit and inversion（414）；
The touch panel controller（401）Three-phase grid inverter controller is connected on respectively（402）, touch-screen（403）With PC simultaneously
Machine communication interface（5）An output end, touch panel controller（401）Output end connects switch driving circuit respectively（405）And liter
Press drive circuit（406）An input；
The sample circuit（404）Output end connect touch panel controller respectively（401）With three-phase grid inverter controller
（402）An input；
The three-phase grid inverter controller（402）Output termination inverse changing driving circuit（407）An input；
The switch driving circuit（405）First output termination three phase full bridge grid-connected inverting system major loop（2）Input protect
Shield switch（21）, switch driving circuit（405）Second output termination three phase full bridge grid-connected inverting system major loop（2）Three-phase
Grid-connected switch（25）, switch driving circuit（405）The 3rd output termination three phase full bridge grid-connected inverting system major loop（2）Electricity
Net, which networks, to be switched（26）；
The booster driving circuit（406）Output termination three phase full bridge grid-connected inverting system major loop（2）DC boosting electricity
Road（22）An input；
The inverse changing driving circuit（407）Output termination three phase full bridge grid-connected inverting system major loop（2）Three-phase inversion electricity
Road（23）An input；
The sample circuit（404）Input connect three phase network and local load frequency detection circuit respectively（408）Output
End, battery voltage detection circuit（409）, battery current detection circuit（410）, booster voltage detection circuit（411）, three contraries
Become, power network and local load voltage detect circuit（412）, three-phase inversion, power network and local load current detection circuit（413）、
Three-phase inversion, power network and local load phase detection circuit（414）And three-phase inversion.
2. solar energy power generating three phase full bridge grid-connected inverting system according to claim 1, it is characterised in that the input
Protection switch（21）Including the first controllable silicon（SCR1）With the second controllable silicon（SCR2）；The DC voltage booster circuit（22）Including
One inductance（L1）, the second inductance（L2）, the first diode（D1）, the second diode（D2）, the first IGBT power tubes（Q1）, second
IGBT power tubes（Q2）, the first electrochemical capacitor（C1）With the second electrochemical capacitor（C2）；The three-phase inverting circuit（23）Including
One power tube（Q3）, the second power tube（Q4）, the 3rd power tube（Q5）, the 4th power tube（Q6）, the 5th power tube（Q7）With
Six power tubes（Q8）；The Three-phase electric-wave filter（24）Including the first inductance（L3）, the second inductance（L4）, the 3rd inductance（L5）,
One electric capacity（C3）, the second electric capacity（C4）With the 3rd electric capacity（C5）；The three-phase grid switch（25）Including the first bidirectional triode thyristor
（SCR3）, the second bidirectional triode thyristor（SCR4）With the first bidirectional triode thyristor（SCR5）；The power network, which networks, to be switched（26）Including
One bidirectional triode thyristor（SCR6）, the second bidirectional triode thyristor（SCR7）With the 3rd bidirectional triode thyristor（SCR8）.
3. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the input
Protection switch（21）The first controllable silicon（SCR1）With the second controllable silicon（SCR2）Anode connect solar cell respectively（1）'s
Positive pole and negative pole, the first controllable silicon（SCR1）With the second controllable silicon（SCR2）Negative electrode connect DC voltage booster circuit respectively（22）'s
First inductance（L1）With the second inductance（L2）One end, the first controllable silicon（SCR1）With the second controllable silicon（SCR2）Gate pole connection
Three phase full bridge parallel network reverse control system（4）In switch driving circuit（405）An output end.
4. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the direct current
Booster circuit（22）The first inductance（L1）And second inductance（L2）One end connect input protection switch respectively（21）Two
Output end；First diode（D1）Anode tap connect the first inductance（L1）The other end, second diode（D2）
Cathode terminal connect the second inductance（L2）The other end；The first IGBT power tubes（Q1）Colelctor electrode even press the first diode
（D1）Anode tap, the first IGBT power tubes（Q1）Emitter stage connect the 2nd IGBT power tubes（Q2）Colelctor electrode and composition N
Zero line side, the 2nd IGBT power tubes（Q2）Emitter stage connect the second diode（D2）Cathode terminal, the first IGBT power tubes
（Q1）With the 2nd IGBT power tubes（Q2）Gate terminal connection three phase full bridge parallel network reverse control system（4）In boosting driving electricity
Road（406）, first electrochemical capacitor（C1）Positive terminal connect the first diode（D1）Cathode terminal, the first electrochemical capacitor
（C1）Negative pole end connect the second electrochemical capacitor（C2）Positive terminal, and connect N zero line sides, the second electrochemical capacitor（C2）Negative pole
The second diode of end connection（D2）Anode tap, the first electrochemical capacitor（C1）Positive terminal export positive BUS DC voltages, second
Electrochemical capacitor（C2）The negative BUS DC voltages of negative pole end output.
5. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the direct current
Booster circuit（22）The first power tube（Q1）, three-phase inverting circuit（23）3rd power tube（Q5）And three-phase inverting circuit（23）
5th power tube（Q7）The unified connection of collector terminal after connect DC voltage booster circuit（22）The first diode（D1）Negative electrode
End and the first electrochemical capacitor（C1）Positive terminal, second power tube（Q4）, the 4th power tube（Q6）With the 6th power tube
（Q8）The unified connection of emitter terminal after connect DC voltage booster circuit（22）The second diode（D2）Cathode terminal and second electricity
Solve electric capacity（C2）Negative pole end；First power tube（Q3）Emitter terminal connect the second power tube（Q4）Collector terminal,
And connect Three-phase electric-wave filter（24）The first inductance（L3）One end；3rd power tube（Q5）Emitter terminal connection the 4th
Power tube（Q6）Collector terminal, and connect Three-phase electric-wave filter（24）The second inductance（L4）One end；5th power tube
（Q7）Emitter terminal connect the 6th power tube（Q8）Collector terminal, and connect Three-phase electric-wave filter（24）The 3rd inductance（L5）
One end；First power tube（Q3）, the second power tube（Q4）, the 3rd power tube（Q5）, the 4th power tube（Q6）, the 5th work(
Rate pipe（Q7）With the 6th power tube（Q8）All gate terminals connection three phase full bridge parallel network reverse control system（4）Inversion driving
Circuit（407）Output end.
6. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the three-phase
Wave filter（24）The first inductance（L3）, the second inductance（L4）With the 3rd inductance（L5）The other end connect the first electric capacity respectively
（C3）, the second electric capacity（C4）With the 3rd electric capacity（C5）One end after, and connect three-phase grid switch（25）Three inputs, institute
State the first electric capacity（C3）, the second electric capacity（C4）With the 3rd electric capacity（C5）The other end connection power network（32）With local load（31）'s
One public N zero line side.
7. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the three-phase
Grid-connected switch（25）The first bidirectional triode thyristor（SCR3）, the second bidirectional triode thyristor（SCR4）With the 3rd bidirectional triode thyristor（SCR5）
One end connect Three-phase electric-wave filter respectively（24）The first inductance（L1）, the second inductance（L2）, the 3rd inductance（L3）An output
End, the local load of its other end connection（31）Network and switch with power network（26）Three-phase input end；First bidirectional triode thyristor
（SCR3）, the second bidirectional triode thyristor（SCR4）With the 3rd bidirectional triode thyristor（SCR5）Gate pole connection three phase full bridge parallel network reverse control
System processed（4）In switch driving circuit（405）Another output end.
8. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the power network
Network switch（26）The first bidirectional triode thyristor（SCR6）, the second bidirectional triode thyristor（SCR7）With the 3rd bidirectional triode thyristor（SCR8）
One end connect local load respectively（31）Three-phase input end and three-phase grid switch（25）Three-phase output end, its other end
Connect power network（31）Three-phase input end；First bidirectional triode thyristor（SCR7）, the second bidirectional triode thyristor（SCR8）With the 3rd
Bidirectional triode thyristor（SCR8）Gate pole connection three phase full bridge parallel network reverse control system（4）In switch driving circuit（405）'s
Another output end.
9. solar energy power generating three phase full bridge grid-connected inverting system according to claim 2, it is characterised in that the touch
Panel controller（401）With three-phase grid inverter controller（402）It is described including digital processing DSP-TMS320LF24x chips
Switch driving circuit（405）, booster driving circuit（406）And inverse changing driving circuit（407）Including FPGA CPLD chips,
The touch panel controller（401）An input/output terminal pass through PC and machine communication interface（5）Connect host computer PC or other
The three phase full bridge grid-connected inverting system of parallel running（4）, the touch panel controller（401）According to solar cell（1）'s
Voltage and current monitors its peak power output, and adjusts DC voltage booster circuit accordingly（22）Drive signal dutycycle, it is real
Apply maximal power tracing control；The three-phase grid inverter controller（402）, implement grid-connected and two kinds of operational mode controls of isolated network
And its take over seamlessly, and according to DC voltage booster circuit（22）Positive negative dc voltage, three-phase inverting circuit（23）, power network（32）With
Local load（31）Three-phase current, voltage, frequency, phase, power, it is determined that output is to three-phase inverting circuit（23）High frequency just
String ripple space vector pulse width modulation SVPWM control signals.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425543A (en) * | 2017-06-30 | 2017-12-01 | 浙江瑞尚能源科技有限公司 | A kind of DSP control system used in solar power system |
| CN108683346A (en) * | 2018-07-25 | 2018-10-19 | 汉能移动能源控股集团有限公司 | Converter and solar power generation system |
| CN108695886A (en) * | 2018-05-23 | 2018-10-23 | 昆明理工大学 | A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation |
| CN110635703A (en) * | 2019-08-20 | 2019-12-31 | 国网山东省电力公司昌邑市供电公司 | Grid-connected inverter control system |
| CN112327998A (en) * | 2020-11-02 | 2021-02-05 | 王丽珊 | Maximum power tracking controller for electric power |
| CN112688419A (en) * | 2021-01-27 | 2021-04-20 | 洛阳市质量计量检测中心 | Photovoltaic power generation grid-connected double-loop power supply system and method |
| CN114221566A (en) * | 2021-12-24 | 2022-03-22 | 佛山索弗克氢能源有限公司 | Fuel cell miniaturization direct current single-phase inverter and control method thereof |
| CN114710053A (en) * | 2022-06-06 | 2022-07-05 | 阳光电源股份有限公司 | Inverter, power supply system and protection method for DC side of inverter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307020A (en) * | 2011-09-05 | 2012-01-04 | 华南理工大学 | Phase shift soft switch high frequency isolation photovoltaic grid-connected inverter |
| CN102522911A (en) * | 2011-11-25 | 2012-06-27 | 华为技术有限公司 | Inverting device and solar PV (Photovoltaic) grid-connected system applying same |
| CN102545257A (en) * | 2012-01-12 | 2012-07-04 | 广东中商国通电子有限公司 | Solar photovoltaic generating single-phase grid-connected inverter and control method thereof |
| US20150318796A1 (en) * | 2011-05-08 | 2015-11-05 | Paul Wilkinson Dent | Inverter inrush current limiting |
| CN105429175A (en) * | 2015-12-03 | 2016-03-23 | 辽宁立洲能源科技有限公司 | Solar power generation grid-connected control system |
| US20160164295A1 (en) * | 2014-12-04 | 2016-06-09 | Cyboenergy, Inc. | Smart And Grid-Flexible Power Inverters |
| CN207251220U (en) * | 2017-05-15 | 2018-04-17 | 昆明理工大学 | A kind of solar energy power generating three phase full bridge grid-connected inverting system |
-
2017
- 2017-05-15 CN CN201710339213.0A patent/CN107086600A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150318796A1 (en) * | 2011-05-08 | 2015-11-05 | Paul Wilkinson Dent | Inverter inrush current limiting |
| CN102307020A (en) * | 2011-09-05 | 2012-01-04 | 华南理工大学 | Phase shift soft switch high frequency isolation photovoltaic grid-connected inverter |
| CN102522911A (en) * | 2011-11-25 | 2012-06-27 | 华为技术有限公司 | Inverting device and solar PV (Photovoltaic) grid-connected system applying same |
| CN102545257A (en) * | 2012-01-12 | 2012-07-04 | 广东中商国通电子有限公司 | Solar photovoltaic generating single-phase grid-connected inverter and control method thereof |
| US20160164295A1 (en) * | 2014-12-04 | 2016-06-09 | Cyboenergy, Inc. | Smart And Grid-Flexible Power Inverters |
| CN105429175A (en) * | 2015-12-03 | 2016-03-23 | 辽宁立洲能源科技有限公司 | Solar power generation grid-connected control system |
| CN207251220U (en) * | 2017-05-15 | 2018-04-17 | 昆明理工大学 | A kind of solar energy power generating three phase full bridge grid-connected inverting system |
Non-Patent Citations (1)
| Title |
|---|
| 曲学基;: "逆变技术在太阳能发电系统中的应用", 电源技术应用, vol. 11, no. 09, pages 5 - 7 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425543A (en) * | 2017-06-30 | 2017-12-01 | 浙江瑞尚能源科技有限公司 | A kind of DSP control system used in solar power system |
| CN108695886A (en) * | 2018-05-23 | 2018-10-23 | 昆明理工大学 | A kind of grid-connected inverting system of fuel cell and solar cell mixed power generation |
| CN108683346A (en) * | 2018-07-25 | 2018-10-19 | 汉能移动能源控股集团有限公司 | Converter and solar power generation system |
| CN110635703A (en) * | 2019-08-20 | 2019-12-31 | 国网山东省电力公司昌邑市供电公司 | Grid-connected inverter control system |
| CN112327998A (en) * | 2020-11-02 | 2021-02-05 | 王丽珊 | Maximum power tracking controller for electric power |
| CN112688419A (en) * | 2021-01-27 | 2021-04-20 | 洛阳市质量计量检测中心 | Photovoltaic power generation grid-connected double-loop power supply system and method |
| CN114221566A (en) * | 2021-12-24 | 2022-03-22 | 佛山索弗克氢能源有限公司 | Fuel cell miniaturization direct current single-phase inverter and control method thereof |
| CN114710053A (en) * | 2022-06-06 | 2022-07-05 | 阳光电源股份有限公司 | Inverter, power supply system and protection method for DC side of inverter |
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