CN205212446U - Single -phase photovoltaic grid -connected inverter controlling means - Google Patents
Single -phase photovoltaic grid -connected inverter controlling means Download PDFInfo
- Publication number
- CN205212446U CN205212446U CN201520815165.4U CN201520815165U CN205212446U CN 205212446 U CN205212446 U CN 205212446U CN 201520815165 U CN201520815165 U CN 201520815165U CN 205212446 U CN205212446 U CN 205212446U
- Authority
- CN
- China
- Prior art keywords
- signal
- dsp
- current
- voltage
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model provides a single -phase photovoltaic grid -connected inverter controlling means, be one kind can with solar energy transformation for the device that the system of electric energy carries out the active control, wherein mainly include interface circuit, analog -to -digital conversion chip, FPGA module, DSP module. The device mainly is DC voltage and current signal with acquireing from PV (Photovoltaic), and catch the alternating voltage that gets and current signal by net from the municipality and pass through interface circuit and analog -to -digital conversion chip and get into DSP after again, then the DSP module generates the controlled quantity according to certain control algorithm and transferes the FPGA module, the PWM modulation is carried out according to controlled quantity and current signal to the FPGA module, production and grid voltage frequency together, the required control current of homophase, thereby realize the active control to the dc -to -ac converter. The utility model discloses not only possess very strong data -handling capacity, realized the design that integrates to digital controller with the digital power amplifier of dc -to -ac converter moreover for the intelligent degree of whole device improves greatly.
Description
Technical field
The present invention relates to a kind of single-phase photovoltaic grid-connected inverter control device, the DC conversion for being sent by PV is and the alternating current of line voltage with frequency, homophase, thus both can powers to the load, again to a system and device of grid generation.Be specially adapted to the place that solar energy is more sufficient, especially for family house, be equipped with photovoltaic generating system, the situation of power tense on daytime can be relaxed, and grid power factor can be improved and reduce line loss.
Background technology
Under current development of world economy general layout, the mankind are to the demand of the energy in continuous growth, and the sustainable development of the energy more and more obtains the attention of people, and solar energy is as a kind of novel green regenerative energy sources, utilizing maximum compared with other new forms of energy, is optimal regenerative resource.Inversion transformation technique is as the key technology tapped a new source of energy, and the transformation of electrical energy of solar cell becomes AC energy to generate electricity by way of merging two or more grid systems by it.Parallel network reverse apparatus, as the interface arrangement of solar cell and electrical network, has vital effect, utilizes photovoltaic generation, have obvious advantage in the development and utilization of new forms of energy: 1, structure is simple, and volume is little and light; 2, easy installation and transportation, the construction period is short; 3, safeguard simply, easy to use; 4, clean, safety, noiseless; 5, reliability is high, and the life-span is long, and applied range.
The output of the combining inverter in current photovoltaic generating system may be controlled to voltage source or current source.If the output controlling grid-connected system is an alternating-current voltage source, then in fact solar grid-connected system and electrical network are exactly the parallel connection of two alternating-current voltage sources.In order to ensure the stable operation of system, then strictly must control amplitude and the phase place of grid-connected system output voltage simultaneously, because output voltage amplitude not easily accurately controls, and the reasons such as the response speed of phase-locked loop is slower, circulation may be there is between this grid-connected system and electrical network, system can not stable operation, even can break down, therefore, the current source system of voltage-type is the inevitable choice that photovoltaic parallel in system usually designs, and in fact such grid-connected system and electrical network are exactly the parallel connection of an ac current source and voltage source.The output voltage amplitude of inverter is line voltage by clamp automatically, and by the Phase synchronization adopting Phase-locked Technique to realize grid-connected current and line voltage, the power factor of guarantee system output is 1.In real system, the meritorious output of control system and idle output can also be come by the size of adjustment grid-connected system output current and phase place.
The control method of current MPPT maximum power point tracking circuit has many kinds, common are fixed voltage method, disturbance observation, increases conductance method etc.In addition, the control methods such as fuzzy control, sliding formwork control are also applied to MPPT maximum power point tracking and control and achieve certain achievement in research by researcher.But said method all can realize regulating the tracking of photovoltaic device peak power output, but all there is following defect:
(1) tracking time is very short, follows the tracks of unstable, can not meet the requirement of real-time running complex control algorithm;
(2) large from loss when sunlight is not strong or night can not generate electricity at this device.
Summary of the invention
Technology of the present invention is dealt with problems: the tracking time overcoming existing DC-to-AC converter is shorter, it is not very stable for following the tracks of, the requirement of real-time that runs complex control algorithm can not be met and from the large shortcoming of loss, this device provides a kind of high conversion efficiency, high reliability, intelligentized numerical control device.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of single-phase photovoltaic grid-connected inverter device, comprising:
The input signal interface circuits all connected with current signal modulus conversion chip and voltage signal modulus conversion chip, for by voltage sensor senses to the voltage signal of AC and DC input convert the square-wave signal of 0 ~ 3.3V to, and convert the voltage signal of 0 ~ 3.3V to for the current signal of the AC and DC input detected by current sensor;
Voltage signal modulus conversion chip and current signal modulus conversion chip are all connected with FPGA module by level transferring chip 1, for sampling to electric current and voltage signal, obtain digitized electric current and voltage signal;
DSP module connects with FPGA module, and the sampled result of the current signal that the voltage signal obtain FPGA module and FPGA module obtain carries out calculation process, obtains the controlled quentity controlled variable needed for power model;
Described FPGA module is for controlling the sampling of electric current and ac voltage signal; The controlled quentity controlled variable given according to DSP thus signal in conjunction with current sample carries out PWM; Synchronizing signal adopts zero-crossing comparator detection signal negative sense zero crossing, and sends interrupt request singal to DSP, and the time between twice interruption is exactly a complete cycle ripple of signal thus the frequency of certainty annuity, thus processes pwm signal, protection power model;
Power model, drives corresponding full-bridge type transducing circuit according to the controlled quentity controlled variable that FPGA module is given, thus the controlled quentity controlled variable change that the current following DSP of control inverter output is given.
On the basis of such scheme and as the preferred version of such scheme: described DSP module comprises dsp chip, what connect with this dsp chip extends out flash storage, extends out RAM.
On the basis of such scheme and as the preferred version of such scheme: the fpga chip that described FPGA module comprises configuring chip and connects with this configuring chip, and FPGA module and DSP module concurrent working.
On the basis of such scheme and as the preferred version of such scheme: the separate modulation being completed three passage 6 road pwm signals by FPGA module.
On the basis of such scheme and as the preferred version of such scheme: the protection such as overcurrent, excess temperature, over voltage, mistake, under-frequency of described electrical network and the anti-straight-through function of the upper and lower brachium pontis of full-bridge type transducing circuit have been come by FPGA module.
Principle of the present invention: fpga chip triggers modulus conversion chip according to the sampled voltage of setting and samples to voltage signal and current signal, and transformation result is read in the RAM in fpga chip.When there being alternating voltage pulses, synchronizing signal adopts zero-crossing comparator detection signal negative sense zero crossing, and send interrupt request singal to DSP, time between twice interruption is exactly a complete cycle ripple of signal thus the frequency of certainty annuity, DSP reads the frequency values of alternating voltage from fpga chip, then perform control algolithm and obtain controlled quentity controlled variable, controlled quentity controlled variable is passed to FPGA, fpga chip performs the control algolithm of power model in conjunction with current signal sampled value according to the given controlled quentity controlled variable of dsp chip, carry out 6 tunnel PWM, prevent on full-bridge type transducing circuit to pwm signal, lower bridge arm direct pass process.If do not have the guard signals such as overcurrent, overvoltage, under-voltage, overfrequency, under-frequency, excess temperature to produce, pwm signal is exported as usual; After the guard signals such as overcurrent, overvoltage, under-voltage, overfrequency, under-frequency, excess temperature being detected, the pwm signal of respective channel is blocked.First power model carries out the isolation of strong and weak electricity signal to the pwm signal that FPGA module exports by high speed photo coupling, reduce forceful electric power signal to the interference of controller, pwm signal after isolation drives conducting and the shutoff of full-bridge type transducing circuit four power tube IRF3710 through IR2110, thus obtain the control electric current of needs in a device, realize the ACTIVE CONTROL of inverter system.
The present invention's advantage is compared with prior art: the present invention utilizes high performance dsp chip TMS320F28335 to build the execution core of whole system control algolithm, selects fpga chip XC3S50 to complete the control of power model.The analog controller generally adopted with existing inverter is compared with digitial controller has following characteristics:
(1) more traditional take operational amplifier as the analog controller of core, and the present invention has the advantage of digitial controller: debugging flexibly, convenient, volume is little, lightweight, be convenient to realize complicated control algolithm.More existing DSP is the digitial controller of core, and the data-handling capacity of this digitial controller significantly improves, and can meet the requirement of real-time of complex control algorithm.
(2) circuit structure of the present invention eliminates the D/A link in existing numerical control device and the generation of the PWM in analog amplifier circuit.With the PWM circuit of fpga chip as power model, make three passages of power model can parallel processing, substantially reduce the time delay of system, ensure that the system delay of numerical control device, improve stability during system height rotating speed.
(3) adopt fpga chip as the controller of modulus conversion chip, and realize the logic of line voltage frequency.This design makes dsp chip only for computing, and fpga chip, as the controller of power model, has given full play to the advantage of each module, made the performance of system have large increase.
(4) DC/DC converter have employed boost converter, and boost converter to load discharge, realizes the object that load voltage raises and follows the tracks of maximum power point in the mode of voltage source.The structure of boost converter and control are comparatively simple, have higher efficiency, photovoltaic cell are directly received the input of boost converter, just can carry out the maximal power tracing of photovoltaic battery panel.In grid-connected system, it is more satisfactory selection that boost converter does MPPT controller, it is booster circuit, such photovoltaic cell voltage just can lower than the crest voltage of grid side, the series connection of photovoltaic module is subject to the restriction of electric pressure, so just makes boost converter input terminal voltage configure more flexible.
Accompanying drawing explanation
Fig. 1 is structure composition frame chart of the present invention;
Fig. 2 is of the present invention adopted current mode topological diagram;
Fig. 3 is the structure chart of of the present invention adopted power frequency inversion;
Fig. 4 is two-stage grid-connected system structure chart of the present invention;
Fig. 5 is primary heat transport system structure chart of the present invention;
Fig. 6 is Grid-connected Control Strategy design frame chart of the present invention;
Fig. 7 is Control System Design block diagram of the present invention;
Fig. 8 is the synchronous flow chart of zero crossing of the present invention;
Fig. 9 is the control flow general principle figure of MPPT of the present invention;
Figure 10 is that DPLL of the present invention schemes;
Figure 11 is the circuit diagram that fpga chip of the present invention is connected with other device signal;
Figure 12 is dsp chip of the present invention and the circuit diagram extending out storage chip signal and be connected.
Embodiment
As shown in Figure 1, hardware module of the present invention is primarily of interface circuit 15, voltage signal modulus conversion chip 13, current signal modulus conversion chip 16, FPGA module 7, DSP module 8, and several part composition such as power model 19, wherein interface circuit 15 comprises voltage sensor interface circuit 14, current sensor interface circuit 17; Power model 19 comprises full-bridge type transducing circuit 2, pulse driving circuit 3, high speed photo coupling buffer circuit 4, overvoltage, under-voltage protection signal generating circuit 20, overfrequency, underfrequency protection signal generating circuit 21, amplitude, phase-detection 22, voltage sensor 23, overcurrent protection signal generating circuit 24, current sensor 25, overheat protector 26; FPGA module 7 comprises configuring chip 5, fpga chip 6; DSP module 8 comprises dsp chip 9, extends out Flash10, extends out RAM11.The voltage signal that voltage sensor 23 detects is converted to the 0V ~ 3.3V scope required by voltage signal modulus conversion chip 12 by voltage sensor interface circuit 14, the current signal that current sensor 25 detects is converted to the 0V ~ 3.3V scope required by current signal modulus conversion chip 16 by current sensor interface circuit 17, fpga chip 6 control voltage signal modulus conversion chip 13 and current signal modulus conversion chip 16 are sampled to voltage signal and current signal respectively, sampled result passes to fpga chip 6 by parallel bus after level transferring chip 12 carries out level conversion, fpga chip 6 calculates the voltage of city's net by voltage logic, frequency, amplitude, phase place, dsp chip 9 reads the voltage of city's net from fpga chip 6, frequency, amplitude, after phase signal, carry out computing generate controlled quentity controlled variable and passed to fpga chip 6, the current signal that fpga chip 6 utilizes modulus conversion chip 16 to obtain carries out the separate modulation of pwm signal according to power amplifier control algolithm, the PWM modulated carries out after level conversion through high speed optical coupling isolation circuit 4 through level transferring chip 18, pulsed drive protective circuit 3 sends full-bridge type transducing circuit 2 to, generate the control electric current needed for electrical network 1, thus realize with line voltage with frequently, the electric current ACTIVE CONTROL of homophase.
As shown in Figure 2, give current mode topology diagram of the present invention, the output of combining inverter controls as current source, and such grid-connected system and electrical network are actually the parallel connection of an ac current source and voltage source.
As shown in Figure 3, give power frequency inverter structure figure of the present invention, it is first converted by DC/AC, solar cell direct current energy is converted into AC energy, and between full-bridge inverter and electrical network, add Industrial Frequency Transformer isolation, such whole system would not to electrical network output DC component, and Industrial Frequency Transformer also plays the effect of boosting, makes the input voltage of DC side have wider scope like this.
As shown in Figure 4, give two-stage grid-connected system structure chart of the present invention, it is primarily of the most of composition of photovoltaic battery array, DC control system, energy-storage system, photovoltaic combining inverter etc. four.Be characterized in that electric energy that photovoltaic battery array produces is by inputting electrical network after Two Stages.
As shown in Figure 5, give primary heat transport system structure chart of the present invention, this device is a kind of structure of two-stage type, prime DC/DC converter realizes maximal power tracing function as MPPT controller, rear class is full bridge inverter, produce and the electric current of line voltage with frequency homophase, make the grid-connected power factor of whole device be 1.The two is by DC bus DC
linkbe connected, separate in control.DC
linkvoltage controls as steady state value, by control DC by parallel network reverse level
linkvoltage produces grid-connected current set-point, and DC/DC converter have employed boost converter, and boost converter to load discharge, realizes the object that load voltage raises and follows the tracks of maximum power point in the mode of voltage source.The structure of boost converter and control are comparatively simple, have higher efficiency, photovoltaic cell are directly received the input of boost converter, just can carry out the maximal power tracing of photovoltaic battery panel.In grid-connected system, it is more satisfactory selection that boost converter does MPPT controller, it is booster circuit, such photovoltaic cell voltage just can lower than the crest voltage of grid side, the series connection of photovoltaic module is subject to the restriction of electric pressure, so just makes boost converter input terminal voltage configure more flexible.
Fig. 6 is Grid-connected Control Strategy design frame chart of the present invention; This device has following characteristics: 1, the output of inverter gets access to grid, and from control principle, electrical network is a disturbance quantity; 2, the grid-connected current as controlled volume and the same homophase frequently of line voltage is required.A kind of integrated control strategy combined with synchronization phase-locked control based on multivariable double-closed-loop control.Inner ring control system adopts the instantaneous values feedback based on grid-connected current, for the real-time tracking of electric current.The object of additional outer shroud is to eliminate owing to adopting separately inner ring to control the original reason error existed.The operation principle of outer shroud control system is: when electrical network zero crossing arrives, detected amplitude and the phase place of grid-connected current by amplitude, phase-detection respectively, produces auxiliary reference electric current to compensate the amplitude and the phase error that only control generation with monocycle after PI regulates.As the reference current of inner ring after the main reference current signal that auxiliary reference current signal and synchronous pll produce is added.Change an angle to understand, the acting in conjunction of outer shroud and inner ring ensure that the no error following of grid-connected current to main reference current.Therefore inner ring can be called current tracking ring together with outer shroud.Voltage zero-crossing point of power grid is the synchronisation source of synchronous pll and outer shroud phase control ring, provides the datum mark producing sinusoidal signal.Based in the realization of DSP, after the generation of zero crossing converts line voltage to square-wave signal exactly, catch the rising edge of square-wave signal.The interruption that rising edge causes is as the benchmark sending out SPWM ripple.Synchronous pll, for generation of the main reference current signal synchronous with line voltage, is the equal of a reference sinusoidal wave producer.
Fig. 7 is Control System Design block diagram of the present invention; The TMS320F28335 type dsp chip of TI company is adopted in CPU control loop; not only can meet the quick response requirement of control; the SPWM signal that can change in real time by pulsewidth and the frequency of software generation is provided to power device drive plate, the functions such as MPPT, software phlase locking control, A/D conversion, error protection can also be completed simultaneously.In addition, by the RS232 communication port of shielding, CPU control loop can realize and the communicating of display panel and remote control computer.The process of analog signal and the driving transmission of switching value such as inverter main circuit voltage electric current is responsible in drive circuit and testing circuit.Transient fault locking and hardware fault protection function can be realized in addition.Can mask when there is catastrophe failure the SPWM signal that CPU sends, guaranteed output device at failure condition not by false triggering.
Fig. 8 is the synchronous flow chart of zero crossing of the present invention; If at output current and enter the market net time power supply between phase place different, circulation phenomenon will be there is between two power supplys.Circulation is crossed conference and is caused inversion to be overturned, and even burns inverter, therefore should avoid circulation as far as possible, namely inverter must with civil power Phase-Locked Synchronous.In phase-locked link, zero passage detection is realized by zero-crossing comparator, by the return difference of software the dead time comparator.Return difference size determines the antijamming capability of zero-crossing comparator, return difference is larger, antijamming capability is stronger, but return difference is crossed conference and is caused the corresponding increase of frequency detecting error, simultaneously because inverter stops exporting during zero passage detection, the angle that return difference increase can cause the output current of inverter delayed in half period increases.
in formula, α represents the angle of retard of inverter in half period (i.e. the phase difference of electric current and voltage), and cos φ represents the power factor of inverter.Can be obtained fom the above equation, the Trigger Angle increase of inverter will cause output power factor to reduce.
Fig. 9 is the control flow general principle figure of MPPT of the present invention; The MPPT maximum power point tracking device of PV can make photovoltaic system obtain real-time maximum power output.The realization of MPPT maximum power point tracking (MPPT) be in fact one from searching process, by the detection of pair array current output voltage and electric current, obtain current array power output, again compared with the previous moment array power be stored, give up little depositing greatly, then detect, then compare, so ceaselessly go round and begin again, array just can be made dynamically to be operated on maximum power point.
Figure 10 is that DPLL of the present invention schemes; When photovoltaic generating system on-line operation is in synchronizing mode, except should having basic short circuit, overvoltage, overcurrent, under-voltage, under-frequency, overfrequency, the defencive function such as overheated, the specific function of pre-isolated island effect prevention also should be had.The frequency of grid-connected current and phase place and this target of line voltage stringent synchronization are realized by digital phase-locked loop (DigitalPhaseLockedLoop, DPLL).First this design is the SPWM ripple producing 50Hz, then catches the frequency of electrical network, then changes the carrier frequency of corresponding SPWM ripple, thus complete the tracking to electrical network.
The program of whole phase-locked control system is made up of main program and two interruption subroutines, and program flow diagram as shown in the figure.The initialization of the main completion system of main program and catch the initial work with SPWM ripple related register, and the frequency of electrical network mainly determined by rising edge CAP1 interruption subroutine, trailing edge CAP2 interruption subroutine mainly determine the phase place of electrical network go forward side by side horizontal lock adjustment.For ensureing the order that CAP1 and CAP2 interrupts, in CAP1 interruption subroutine, being provided with a mark, removing this mark in CAP2 interruption subroutine, thus make program more perfect.
Figure 11 is the circuit diagram that fpga chip of the present invention is connected with other device signal: after system electrification from configuring chip load logic information, successfully load after enter mode of operation.After entering mode of operation, fpga chip has walked abreast three functions: (1) FPGA when there being hall signal calculates the frequency of electrical network according to the time interval of twice hall signal, then notify DSP in the mode of interrupting, DSP reads the value of mains frequency from fpga chip.(2) when setting sampling time then, triggering modulus conversion chip is sampled to voltage signal and current signal by fpga chip, after voltage signal and current signal sampling terminate, fpga chip sends interrupt requests to dsp chip, and DSP reads voltage signal values from FPGA.(3) carry out according to the given controlled quentity controlled variable of DSP and current signal sampled value the regulated quantity that computing obtains pwm signal duty ratio, then carry out PWM, finally according to the state of overcurrent guard signal, pwm signal is changed, output pwm signal.
Figure 12 is dsp chip of the present invention and the circuit diagram extending out storage chip signal and be connected: after system electrification, first DSP carries out initialization, enters mode of operation after initialization terminates.When not interrupting, DSP performs do-nothing operation; When there being interrupt requests and DSP is not in DSP respective interrupt when performing interrupt routine, if during the interruption of the reading magnitude of voltage sent for FPGA, DSP reads magnitude of voltage in interrupt routine.If during the interruption of the reading voltage signal sent for FPGA, DSP reads voltage signal values and carries out computing according to the frequency values of line voltage from FPGA, obtains the controlled quentity controlled variable of power model and passes to FPGA.If have interrupt requests and DSP is in interrupt routine implementation, then wait for that DSP processes this interruption after executing interrupt service routine again.
Claims (4)
1. a single-phase photovoltaic grid-connected inverter control device, is characterized in that: comprising:
The input signal interface circuits (15) all connected with current signal modulus conversion chip (16) and voltage signal modulus conversion chip (13), for by voltage sensor senses to the voltage signal of AC and DC input convert the square-wave signal of 0 ~ 3.3V to, and convert the voltage signal of 0 ~ 3.3V to for the current signal of the AC and DC input detected by current sensor;
Voltage signal modulus conversion chip (13) and current signal modulus conversion chip (16) are all connected with FPGA module (7) by level transferring chip 1 (12), for sampling to electric current and voltage signal, obtain digitized electric current and voltage signal;
DSP module (8) connects with FPGA module (7), the sampled result of the current signal that the voltage signal obtain FPGA module (7) and FPGA module (7) obtain carries out calculation process, obtains the controlled quentity controlled variable needed for power model;
Described FPGA module (7) is for controlling the sampling of electric current and ac voltage signal; The controlled quentity controlled variable given according to DSP thus signal in conjunction with current sample carries out PWM; Synchronizing signal adopts zero-crossing comparator detection signal negative sense zero crossing, and sends interrupt request singal to DSP, and the time between twice interruption is exactly a complete cycle ripple of signal thus the frequency of certainty annuity, thus processes pwm signal, protection power model;
Power model (19), drives corresponding full-bridge type transducing circuit according to the controlled quentity controlled variable that FPGA module (7) is given, thus the controlled quentity controlled variable change that the current following DSP of control inverter output is given.
2. single-phase photovoltaic grid-connected inverter control device according to claim 1, it is characterized in that: described DSP module (8) comprises dsp chip (9), what connect with this dsp chip (9) extends out flash storage (10), extends out RAM (11).
3. single-phase photovoltaic grid-connected inverter control device according to claim 1, it is characterized in that: the fpga chip (6) that described FPGA module (7) comprises configuring chip (5) and connects with this configuring chip (5), and FPGA module (7) and DSP module (8) concurrent working.
4. single-phase photovoltaic grid-connected inverter control device according to claim 1, is characterized in that: the separate modulation being completed three passage 6 road pwm signals by FPGA module (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520815165.4U CN205212446U (en) | 2015-10-14 | 2015-10-14 | Single -phase photovoltaic grid -connected inverter controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520815165.4U CN205212446U (en) | 2015-10-14 | 2015-10-14 | Single -phase photovoltaic grid -connected inverter controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205212446U true CN205212446U (en) | 2016-05-04 |
Family
ID=55850138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520815165.4U Expired - Fee Related CN205212446U (en) | 2015-10-14 | 2015-10-14 | Single -phase photovoltaic grid -connected inverter controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205212446U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707141A (en) * | 2017-10-28 | 2018-02-16 | 安徽工程大学 | A kind of circuit control device and method using artificial intelligence process device |
| CN109193896A (en) * | 2018-08-24 | 2019-01-11 | 广东南控电力有限公司 | A kind of power supply system of photovoltaic building |
| CN109245149A (en) * | 2017-07-11 | 2019-01-18 | 浙江昱能科技有限公司 | A kind of control method and system of gird-connected inverter |
| CN109256020A (en) * | 2018-11-06 | 2019-01-22 | 吴基玄 | A kind of micro-capacitance sensor simulation system based on three-phase inverter |
| CN109494807A (en) * | 2018-12-29 | 2019-03-19 | 四川太牛电子科技有限公司 | A kind of solar energy auto-parallel inverter and its control method |
| CN109802398A (en) * | 2019-01-04 | 2019-05-24 | 浙江联盛合众新能源有限公司 | A kind of solar power station power factor calibration control system and control method |
| CN111146810A (en) * | 2020-01-20 | 2020-05-12 | 上海发电设备成套设计研究院有限责任公司 | Three-phase grid-connected cascade photovoltaic inverter and optical fiber communication control method thereof |
| CN111162659A (en) * | 2018-11-08 | 2020-05-15 | 中车永济电机有限公司 | Auxiliary converter control equipment of direct-drive permanent magnet electric locomotive |
| CN111313666A (en) * | 2019-10-18 | 2020-06-19 | 苏州浪潮智能科技有限公司 | High-reliability control device and system of high-power output channel |
| CN113568339A (en) * | 2021-07-15 | 2021-10-29 | 许继电气股份有限公司 | Converter fixed time delay control method and device |
-
2015
- 2015-10-14 CN CN201520815165.4U patent/CN205212446U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245149B (en) * | 2017-07-11 | 2020-06-23 | 浙江昱能科技有限公司 | Control method and system of grid-connected inverter |
| CN109245149A (en) * | 2017-07-11 | 2019-01-18 | 浙江昱能科技有限公司 | A kind of control method and system of gird-connected inverter |
| CN107707141A (en) * | 2017-10-28 | 2018-02-16 | 安徽工程大学 | A kind of circuit control device and method using artificial intelligence process device |
| CN109193896A (en) * | 2018-08-24 | 2019-01-11 | 广东南控电力有限公司 | A kind of power supply system of photovoltaic building |
| CN109256020A (en) * | 2018-11-06 | 2019-01-22 | 吴基玄 | A kind of micro-capacitance sensor simulation system based on three-phase inverter |
| CN111162659A (en) * | 2018-11-08 | 2020-05-15 | 中车永济电机有限公司 | Auxiliary converter control equipment of direct-drive permanent magnet electric locomotive |
| CN109494807A (en) * | 2018-12-29 | 2019-03-19 | 四川太牛电子科技有限公司 | A kind of solar energy auto-parallel inverter and its control method |
| CN109494807B (en) * | 2018-12-29 | 2021-12-21 | 四川太牛电子科技有限公司 | Solar automatic grid-connected inverter and control method thereof |
| CN109802398A (en) * | 2019-01-04 | 2019-05-24 | 浙江联盛合众新能源有限公司 | A kind of solar power station power factor calibration control system and control method |
| CN111313666A (en) * | 2019-10-18 | 2020-06-19 | 苏州浪潮智能科技有限公司 | High-reliability control device and system of high-power output channel |
| CN111313666B (en) * | 2019-10-18 | 2021-10-22 | 苏州浪潮智能科技有限公司 | High-reliability control device and system of high-power output channel |
| CN111146810A (en) * | 2020-01-20 | 2020-05-12 | 上海发电设备成套设计研究院有限责任公司 | Three-phase grid-connected cascade photovoltaic inverter and optical fiber communication control method thereof |
| CN111146810B (en) * | 2020-01-20 | 2021-05-11 | 上海发电设备成套设计研究院有限责任公司 | Three-phase grid-connected cascade photovoltaic inverter and optical fiber communication control method thereof |
| CN113568339A (en) * | 2021-07-15 | 2021-10-29 | 许继电气股份有限公司 | Converter fixed time delay control method and device |
| CN113568339B (en) * | 2021-07-15 | 2023-03-21 | 许继电气股份有限公司 | Converter fixed time delay control method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205212446U (en) | Single -phase photovoltaic grid -connected inverter controlling means | |
| CN102780221B (en) | System and method for controlling online type photovoltaic power generation microgrid without storage device | |
| CN103208939B (en) | Photovoltaic micro-inverter based on secondary-side reference current reconstruction, control system and control method | |
| CN103457293B (en) | Single-phase grid connection inverter for solar photovoltaic power generation | |
| CN103312140B (en) | Starting method of multi-branch two-stage three-phase photovoltaic grid-connected inverter | |
| CN106655843B (en) | Cascade H bridge PWM commutation system and its control method | |
| CN103094922B (en) | Two-level type single-phase grid-connected photovoltaic power generation control method | |
| CN105356765A (en) | Control system and control method of indirect space vector matrix converter based on 60-degree coordinate system | |
| CN104092245B (en) | Alternating-current bypass single-phase photovoltaic inverter and control method and control device thereof | |
| CN103138291A (en) | Wind power generation intelligent single-phase grid-connection controller | |
| CN109103935B (en) | Off-grid and grid-connected seamless switching control method for three-phase energy storage converter | |
| CN203103986U (en) | High power quality photovoltaic inverter suitable for distributed power generation | |
| CN101083399A (en) | Z source power transformation based photovoltaic network inverter | |
| CN103515974B (en) | The single-phase grid-connected control method of photovoltaic of the two MPPT functions of a kind of efficient stable | |
| CN104734193A (en) | Distributed-generation three-phase inverter smooth switch control method | |
| CN104319823A (en) | Alternating current and direct current mixed micro power grid comprising Z source converter and coordination control strategy | |
| CN110112787A (en) | Light based on virtual synchronous generator stores up micro-grid connection presynchronization control method | |
| Kerekes et al. | Three-phase photovoltaic systems: structures, topologies, and control | |
| CN107086600A (en) | A kind of solar energy power generating three phase full bridge grid-connected inverting system | |
| CN202817792U (en) | Micro-source gird connection and power quality control system | |
| CN103532423B (en) | Complex controll current source type combining inverter under a kind of rest frame | |
| CN101777776A (en) | Method for controlling intelligent PV grid-connected inverter based on synchro generator model | |
| CN104539181A (en) | Miniature photovoltaic grid-connected inverter based on LLC resonant conversion | |
| CN104426160A (en) | Positive and negative sequence decoupling control method for low-voltage ride-through compatible with grid-connected photovoltaic inverter | |
| CN103178545B (en) | Power grid current harmonic complementary circuit and control method for photovoltaic grid-connected inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20181014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |