CN101976854A - Photovoltaic power generation single phase grid-connected inverter - Google Patents
Photovoltaic power generation single phase grid-connected inverter Download PDFInfo
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- CN101976854A CN101976854A CN2010105383488A CN201010538348A CN101976854A CN 101976854 A CN101976854 A CN 101976854A CN 2010105383488 A CN2010105383488 A CN 2010105383488A CN 201010538348 A CN201010538348 A CN 201010538348A CN 101976854 A CN101976854 A CN 101976854A
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Abstract
The invention discloses a photovoltaic power generation single phase grid-connected inverter, comprising an inverter circuit, a filter circuit, a digital signal processor (DSP) main control unit, a signal detection unit, a protection circuit, a power frequency isolation transformer, an inversion drive circuit, an auxiliary power supply circuit, a man-machine interaction module, and a parallel operation communication interface. The inverter circuit is of a single-phase whole bridge structure, the direct current is sent to the power frequency isolation transformer for the isolation and the boosting after being subject to the inversion and the filtration. The signal detection unit samples the direct current voltage, the current and alternating current side grid-connected current and the grid voltage signal, which are processed by the DSP main control unit to generate a space vector pulse width modulation (SVPWM) signal, the SVPWM signal drives the inverter circuit to work through the inversion drive circuit, and the protection circuit can blockade protection of the inversion drive circuit to the grid-connected inverter. The grid-connected inverter of the invention has the advantage of stable voltage output, the direct current voltage efficiency of the solar battery can reach more than 95%, and the power generation factor is higher than 0.95.
Description
Technical field
The present invention relates to a kind of photovoltaic power generation apparatus, relate in particular to a kind of photovoltaic generation single-phase grid-connected inverter, belong to the photovoltaic generation equipment technical field.
Background technology
At present, the contradiction of traditional fossil energy consumption pattern and economic development, environmental protection is more and more outstanding.People recognize that progressively the mankind must walk sustainable development path, development and utilization regenerative resource energetically.In the family of regenerative resource, stock number maximum, distribution be solar energy the most generally.Photovoltaic power generation technology utilizes solar cell effectively to absorb solar energy exactly, and makes it to be converted into electric energy.Combining inverter is key link and the visual plant in the photovoltaic power generation grid-connecting system, existing combining inverter adopts SPWM (Sinusoidal PWM) method to carry out pulse-width modulation, with output waveform is purpose near sine wave as far as possible, thereby the utilance of having ignored direct voltage, its direct voltage utilance only are 85%.Therefore, design a kind of novel photovoltaic power generation grid-connecting inverter, improve the direct voltage utilance and have crucial meaning.
Summary of the invention
The object of the present invention is to provide a kind of photovoltaic generation single-phase grid-connected inverter, be used with solar cell, output voltage stabilization, pure power supply ripple solves the low technical problem of prior art direct voltage utilance.
The photovoltaic generation single-phase grid-connected inverter; comprise inverter circuit 1; filter circuit 2; DSP main control unit 3; detecting signal unit 4; protective circuit 5; power frequency isolating transformer 6; inverse changing driving circuit 7; auxiliary power circuit 8; human-computer interaction module 9; parallel operation communication interface 10; the inverter circuit structure that described inverter circuit 1 is the single-phase full bridge formula; the solar cell input dc power carries out inversion to inverter circuit 1; then through filter circuit 2 filtering; delivering to power frequency isolating transformer 6 again isolates; boost; the voltage of described detecting signal unit 4 sampling solar cell inputs; the grid-connected current of electric current and AC side; mains voltage signal; handle by DSP main control unit 3; produce the SVPWM control signal; the SVPWM control signal promotes inverter circuit 1 work through inverse changing driving circuit 7; described protective circuit 5 is by 3 controls of DSP main control unit; block 7 pairs of combining inverters of inverse changing driving circuit and form protection; described auxiliary power circuit 8 provides working power; described human-computer interaction module 9 links to each other with DSP main control unit 3; be used for supervisory keyboard; display; described parallel operation communication interface 10 links to each other with DSP main control unit 3, is used for the parallel operation communication between a plurality of combining inverters.
Purpose of the present invention can also further realize by following technical measures:
Aforementioned photovoltaic generation single-phase grid-connected inverter; wherein DSP main control unit 3 is a control chip with TMS320LF2407; the line voltage of detecting signal unit 4 samplings; grid-connected current; solar array voltage; the solar cell electric current is input to respectively in 4 road AD sampling channels of TMS320LF2407 chip; the CAP1 of the crossover point signal input TMS320LF2407 chip of the line voltage and the voltage that is incorporated into the power networks; CAP2 is to catch line voltage and the voltage-phase that is incorporated into the power networks; realization is incorporated into the power networks phase-locked; described human-computer interaction module 9 is connected to the SCI communication interface of TMS320LF2407 chip; parallel operation communication interface 10 is connected to CAN bus communication module; the TMS320LF2407 chip is exported the SVPWM signal of 4 road band dead bands control to inverse changing driving circuit 7, and protective circuit 5 is connected to the PDPINTA pin of TMS320LF2407 chip.
Compared with prior art, the invention has the beneficial effects as follows: based on the digitlization photovoltaic generation single-phase grid-connected inverter of SVPWM (Space Vector Pulse Width Modulation space vector pulse width modulation) efficient modulation techniques, be used with solar cell, output voltage stabilization, pure power supply ripple, solar cell direct voltage efficient reaches more than 95%, and the generated output factor is higher than 0.95, can realize being incorporated into the power networks and automatically (or manually) of independent operating takes over seamlessly.
Description of drawings
Fig. 1 is the system construction drawing of single-phase photovoltaic grid-connected inverter;
Fig. 2 is single-phase grid-connected inverter main circuit topology diagram;
Fig. 3 is the hardware control system block diagram;
Fig. 4 is a main control unit circuit work power circuit diagram;
Fig. 5 is that alternating voltage sampling and frequency plot are caught figure;
Fig. 6 is solar array voltage testing circuit figure.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1; the photovoltaic generation single-phase grid-connected inverter comprises inverter circuit 1, filter circuit 2, DSP main control unit 3, detecting signal unit 4, protective circuit 5, power frequency isolating transformer 6, inverse changing driving circuit 7, auxiliary power circuit 8, human-computer interaction module 9, parallel operation communication interface 10.The inverter circuit structure that described inverter circuit 1 is the single-phase full bridge formula, the solar cell input dc power carries out inversion to inverter circuit 1, then through filter circuit 2 filtering, delivers to power frequency isolating transformer 6 again and isolates, boosts.Grid-connected current, the mains voltage signal of voltage, electric current and the AC side of described detecting signal unit 4 sampling solar cell inputs, handle by DSP main control unit 3, produce the SVPWM control signal, the SVPWM control signal promotes inverter circuit 1 work through inverse changing driving circuit 7.Described protective circuit 5 is blocked 7 pairs of combining inverters of inverse changing driving circuit and is formed protection by 3 controls of DSP main control unit.Described auxiliary power circuit 8 provides working power for each several part.Described human-computer interaction module 9 links to each other with DSP main control unit 3, serial communication interface and upper single-chip microcomputer keyboard display control program by DSP are that man-machine Switching Module communicates, the operational factor or the failure diagnosis of combining inverter are shown by LCD, also system command signal or the amended parameter of keyboard can be passed to DSP by keyboard simultaneously, so that DSP update the system operational factor, the assurance system normally moves.Described parallel operation communication interface 10 links to each other with DSP main control unit 3, is used for the parallel operation communication between a plurality of combining inverters.
Be illustrated in figure 2 as the topological structure of the inverter circuit 1 of single-phase grid-connected inverter, its topological structure is a H bridge, the inversion device uses IGBT, commutation by IGBT, dc energy converts the AC energy that is suitable for the feed-in electrical network to, because the characteristic of electrical network reflection power supply, so the energy of feed-in electrical network should occur with the form of current source.By the filter action of AC side inductance, the SVPWM voltage waveform of inverter bridge output converts the sine-wave current that is suitable for the feed-in electrical network to, and solar cell direct voltage efficient reaches more than 95%.
As shown in Figure 3, the DSP main control unit 3 of present embodiment is a control chip with TMS320LF2407, the line voltage of detecting signal unit 4 samplings, grid-connected current, solar array voltage, the solar cell electric current is input to respectively in 4 road AD sampling channels of TMS320LF2407 chip, the CAP1 of the crossover point signal input TMS320LF2407 chip of the line voltage and the voltage that is incorporated into the power networks, CAP2 is to catch line voltage and the voltage-phase that is incorporated into the power networks, realization is incorporated into the power networks phase-locked, described human-computer interaction module 9 is connected to the SCI communication interface of TMS320LF2407 chip, parallel operation communication interface 10 is connected to CAN bus communication module, TMS320LF2407 has two event manager module (EWA, EWB) can export 16 road pwm signals altogether, 3 full comparing units are respectively arranged, can export (by program control) pwm signal of 6 pairs of band dead band controls.Only need 4 IGBT of control full-bridge inverter among the present invention, so only use 4 road pwm signals of one of them event manager module (EWA).The TMS320LF2407 chip is exported the SVPWM signal of 4 road band dead bands control to inverse changing driving circuit 7, and protective circuit 5 is connected to the PDPINTA pin of TMS320LF2407 chip.
Fig. 4 is a main control unit circuit work power circuit diagram, in the main control unit circuit, it is 5V that the partial circuit operating voltage is arranged, and other circuit voltage is 3.3V, simultaneously, the working power system that also comprises high-speed digital circuit (CPLD) and analog sampling circuit, therefore, the working power system of main control unit circuit needs well-designed.Obtain the 5V working power from POWER_IN port input 12V voltage through the three-terminal voltage-stabilizing device.In addition, in order to obtain the working power of 3.3V, also must adopt output voltage values is the power supply chip of 3.3V, and present embodiment selects the TPS76833 of TI, and the maximum current of its output is 1A, also has the electrification reset function of 200ms time-delay.
Fig. 5 catches figure for alternating voltage sampling and frequency plot, and in photovoltaic combining inverter, the electric voltage frequency that requires to be incorporated into the power networks, that phase place must keep is consistent with line voltage frequency, phase place, so the DSP main control unit need be caught the frequency and the phase signal of line voltage.Obtain line voltage and the zero crossing of voltage of being incorporated into the power networks by zero cross detection circuit, the square wave that just is converted to, CAP1, CAP2 by DSP catch line voltage and inverter voltage phase place, thus it is phase-locked to realize being incorporated into the power networks.Specific implementation is such: the AC220V alternating voltage is introduced by terminal J1, through the electric current of current-limiting resistance R1 generation less than 2mA, this current signal is through T1(2 mA/2mA) voltage transformer is isolated, secondary 3,4 pin at T1 produce and the onesize little current signal in former limit, pass through sampling resistor R3, accurate amplifier U1(0P27 again), the 6 pin generation-1.65V of U1～+ 1.65V bipolarity AC sine wave voltage, wherein R4, C1 are phase compensating circuit.Because DSP can only gather unipolar voltage, need by resistance R 5, R6 be bipolarity-1.65V～+ 1.65V voltage converts the AD thief hatch sampling that unipolarity 0～3.3V sine voltage offers DSP at terminal A D1, wherein D1, D2 are the voltage clamping diodes.Simultaneously unipolarity 0～3.3V sine voltage also is incorporated into comparator U2A(LM393) 2 pin, wherein by divider resistance R7, the reference voltage that R8 obtains 1.65V is incorporated into U2A(LM393) 3 pin, unipolarity 0～3.3V sine voltage and 1.65V reference voltage are relatively, 1 pin at U2A produces and sinusoidal wave opposite square-wave signal, but must pass through inverter U3A(74HC14) anti-phase the square-wave signal of 1 pin of U2A, obtain square-wave signal with sinusoidal wave homophase, offer DSP and catch a mouthful CAP1, CAP2 catches, and calculates line voltage and the phase place and the frequency of the voltage that is incorporated into the power networks.
Fig. 6 is solar array voltage testing circuit figure, mainly applies to U1 (A7840) linear optical coupling in this circuit, and its major function is the isolation of strong, weak electricity signal, and its maximum input voltage is 320mV, the differential signal way of output.Internal input circuit has amplification, and is the high impedance input, the distortionless transmission millivolt of energy level AC and DC signal, and output signal has the voltage amplification factor about 1000 times as back level operational amplifier differential input signal.In this circuit, DC+ connects the positive level of solar battery group, DC-connects the solar battery group negative pole, solar array voltage is by divider resistance R1, R2 dividing potential drop, obtain 200mV～300mV voltage, this voltage signal is incorporated into U1(A7840 through resistance R 3) 2,3 input pins on, after U1 implements the strong, weak electricity isolation, form differential signal and be input to U2(OP27) 2,3 pin of operational amplifier, circuit at the corresponding levels is connected into voltage follower, output DCOUT sends into the AD sampling end of TMS320LF2407, calculates real-time solar cell panel voltages by the AD sampling.
In addition to the implementation, the present invention can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of requirement of the present invention.
Claims (2)
1. photovoltaic generation single-phase grid-connected inverter; it is characterized in that; comprise inverter circuit (1); filter circuit (2); DSP main control unit (3); detecting signal unit (4); protective circuit (5); power frequency isolating transformer (6); inverse changing driving circuit (7); auxiliary power circuit (8); human-computer interaction module (9); parallel operation communication interface (10); described inverter circuit (1) is the inverter circuit structure of single-phase full bridge formula; the solar cell input dc power carries out inversion to inverter circuit (1); then through filter circuit (2) filtering; delivering to power frequency isolating transformer (6) again isolates; boost; the voltage of described detecting signal unit (4) sampling solar cell input; the grid-connected current of electric current and AC side; mains voltage signal; handle by DSP main control unit (3); produce the SVPWM control signal; the SVPWM control signal promotes inverter circuit (1) work through inverse changing driving circuit (7); described protective circuit (5) is controlled by DSP main control unit (3); block inverse changing driving circuit (7) combining inverter is formed protection; described auxiliary power circuit (8) provides working power; described human-computer interaction module (9) links to each other with DSP main control unit (3); be used for supervisory keyboard; display; described parallel operation communication interface (10) links to each other with DSP main control unit (3), is used for the parallel operation communication between a plurality of combining inverters.
2. photovoltaic generation single-phase grid-connected inverter as claimed in claim 1; it is characterized in that; described DSP main control unit (3) is control chip with TMS320LF2407; the line voltage of detecting signal unit (4) sampling; grid-connected current; solar array voltage; the solar cell electric current is input to respectively in 4 road AD sampling channels of TMS320LF2407 chip; the CAP1 of the crossover point signal input TMS320LF2407 chip of the line voltage and the voltage that is incorporated into the power networks; CAP2 is to catch line voltage and the voltage-phase that is incorporated into the power networks; realization is incorporated into the power networks phase-locked; described human-computer interaction module (9) is connected to the SCI communication interface of TMS320LF2407 chip; parallel operation communication interface (10) is connected to CAN bus communication module; the TMS320LF2407 chip is exported the SVPWM signal of 4 road band dead bands control to inverse changing driving circuit (7), and protective circuit (5) is connected to the I/O interface of TMS320LF2407 chip.
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185509A (en) * | 2011-05-26 | 2011-09-14 | 广东金华达电子有限公司 | Photovoltaic grid connected inverter output current control system |
| CN102447412A (en) * | 2011-12-21 | 2012-05-09 | 成都众询科技有限公司 | Digital control device of inverting power supply based on digital signal processing |
| CN102857089A (en) * | 2011-06-27 | 2013-01-02 | 朱建国 | Auxiliary power supply of photovoltaic grid-connected inverter and photovoltaic power generating grid-connected system comprising auxiliary power supply |
| CN102983588A (en) * | 2012-11-14 | 2013-03-20 | 四川东方电气自动控制工程有限公司 | Photovoltaic grid-tied inversion system based on novel grid-tied control algorithm |
| CN103138291A (en) * | 2013-03-06 | 2013-06-05 | 杨勇 | Wind power generation intelligent single-phase grid-connection controller |
| CN103178542A (en) * | 2013-03-12 | 2013-06-26 | 南京南瑞太阳能科技有限公司 | Distributed power grid-connection interface system and control method thereof |
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| CN104201925A (en) * | 2014-08-15 | 2014-12-10 | 浙江永升新能源科技有限公司 | Three-phase inverter power supply based on digital signal processor (DSP) control |
| CN104767484A (en) * | 2015-04-03 | 2015-07-08 | 广西比迪光电科技工程有限责任公司 | Device for online testing voltage of solar cell module |
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| CN106941262A (en) * | 2017-04-11 | 2017-07-11 | 东南大学 | Photovoltaic grid-connected power generation device and complex correction control method |
| CN108459541A (en) * | 2018-02-26 | 2018-08-28 | 中国地质大学（武汉） | A kind of DBD high-frequency and high-voltage power supplies system |
| CN108494266A (en) * | 2018-03-09 | 2018-09-04 | 长沙市航信电力科技有限公司 | Photovoltaic combining inverter and its control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060171182A1 (en) * | 2005-01-28 | 2006-08-03 | Kasemsan Siri | Solar array inverter with maximum power tracking |
| CN201266891Y (en) * | 2008-09-03 | 2009-07-01 | 深圳职业技术学院 | Parallel-in solar photovoltaic inverter |
| CN101494385A (en) * | 2009-02-18 | 2009-07-29 | 常州瑞闪新能源有限公司 | Solar photovoltaic parallel inverter control system based on LCL filtering |
| CN201623651U (en) * | 2010-01-22 | 2010-11-03 | 扬州晶旭电源有限公司 | Single-stage three-phase solar photovoltaic grid-connected inverter |
-
2010
- 2010-11-10 CN CN2010105383488A patent/CN101976854A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060171182A1 (en) * | 2005-01-28 | 2006-08-03 | Kasemsan Siri | Solar array inverter with maximum power tracking |
| CN201266891Y (en) * | 2008-09-03 | 2009-07-01 | 深圳职业技术学院 | Parallel-in solar photovoltaic inverter |
| CN101494385A (en) * | 2009-02-18 | 2009-07-29 | 常州瑞闪新能源有限公司 | Solar photovoltaic parallel inverter control system based on LCL filtering |
| CN201623651U (en) * | 2010-01-22 | 2010-11-03 | 扬州晶旭电源有限公司 | Single-stage three-phase solar photovoltaic grid-connected inverter |
Non-Patent Citations (1)
| Title |
|---|
| 《浙江大学硕士学位论文》 20090731 余运江 单相光伏并网逆变器的研究 , * |
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| US11187734B2 (en) | 2019-05-31 | 2021-11-30 | Landis+Gyr Innovations, Inc. | Systems for electrically connecting metering devices and distributed energy resource devices |
| US11774473B2 (en) | 2019-05-31 | 2023-10-03 | Landis+Gyr Technology, Inc. | Systems for electrically connecting metering devices and distributed energy resource devices |
| US10886748B1 (en) | 2019-10-11 | 2021-01-05 | Landis+Gyr Innovations, Inc. | Metering and communications for distributed energy resource devices |
| US11316348B2 (en) | 2019-10-11 | 2022-04-26 | Landis+Gyr Innovations, Inc. | Metering and communications for distributed energy resource devices |
| US11237194B2 (en) | 2019-10-11 | 2022-02-01 | Landis+Gyr Innovations, Inc. | Meter for use with a distributed energy resource device |
| US11506693B2 (en) | 2019-10-11 | 2022-11-22 | Landis+Gyr Innovations, Inc. | Meter and socket for use with a distributed energy resource device |
| US11835556B2 (en) | 2019-10-11 | 2023-12-05 | Landis+Gyr Technology, Inc. | Meter for use with a distributed energy resource device |
| US11965918B2 (en) | 2019-10-11 | 2024-04-23 | Landis+Gyr Technology, Inc. | Meter for use with a distributed energy resource device |
| CN110601575A (en) * | 2019-10-18 | 2019-12-20 | 辽宁太阳能研究应用有限公司 | Grid-connected inverter |
| CN113890388A (en) * | 2021-09-29 | 2022-01-04 | 零点创新科技有限公司 | Photovoltaic inverter with stable performance |
| US11982544B2 (en) | 2022-02-04 | 2024-05-14 | Landis+Gyr Technology, Inc. | Distributed control of energy storage device charging and grid stability |
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