CN203720698U - Multistage voltage stabilizing main circuit device of power supply for simulating properties of photovoltaic module - Google Patents
Multistage voltage stabilizing main circuit device of power supply for simulating properties of photovoltaic module Download PDFInfo
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- CN203720698U CN203720698U CN201320838199.6U CN201320838199U CN203720698U CN 203720698 U CN203720698 U CN 203720698U CN 201320838199 U CN201320838199 U CN 201320838199U CN 203720698 U CN203720698 U CN 203720698U
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Abstract
The utility model discloses a multistage voltage stabilizing main circuit device of a power supply for simulating properties of a photovoltaic module, which comprises a plurality of parts of circuits, wherein the main parts comprise a main power circuit part and a control circuit part. The main power circuit part comprises a rectifying filtering circuit, a switching power supply and a linear regulated power supply circuit; output voltage and current are adjusted by adjusting the switching of a switching tube of the switching power supply; the voltage is further stabilized and ripple wave and noise are reduced through the linear regulated power supply circuit. The control part mainly fixes a curve operating point by detecting the output voltage and the output current of the switching power supply and the linear regulated power supply circuit, and emits reference voltage, so as to control the switching of the switching tube and change the output of the multistage voltage stabilizing main circuit device. The method can automatically follow the variation of load, so as to adjust the output of a power supply, and can accurately simulate the characteristic curve of solar energy.
Description
Technical field
The utility model belongs to field of power electronics, relates to a kind of stabilized voltage supply device, is specifically related to a kind of multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic.
Background technology
Solar photovoltaic technology is the generation technology converting solar energy into electrical energy based on photovoltaic effect, utilizes the solar module that microelectronic process engineering is made to complete the work converting solar energy into electrical energy.This technology has not consumption of fossil fuels, non-environmental-pollution, reliability is high, the life-span is long, security performance is good, be applicable to decentralized power supply, expand energy convenient, with the advantage such as other power-supply system compatibilities.Therefore, photovoltaic industry has been one of fastest-rising new high-tech industry in the world since the eighties in 20th century.At present, many countries first place that particularly developed country develops photovoltaic generation pendulum in regenerative resource in the world, to promote its development.
Solar photovoltaic technology need to become industrial frequency AC by direct current from inverter, to adapt to numerous ac electric apparatus conditions of power supply.The alternating current of inverter output is grid-connected, must meet the condition with frequency homophase, reaches by adjusting voltage the object transmitting electric power to electrical network.Therefore the function to photovoltaic combining inverter, performance requirement must be tested through strict.
Photovoltaic combining inverter is tested, need to provide the direct supply of simulation photovoltaic generation as the input of photovoltaic DC-to-AC converter, also need to provide the simulation three-phase main-frequency alternating current being connected with photovoltaic combining inverter output terminal environment, by changing input and the output condition of tested photovoltaic combining inverter, its input end of Real-time Collection, the voltage of output terminal, current value, through suitable routine processes, obtain the result that tested photovoltaic combining inverter is tested.
Solar photovoltaic technology is the generation technology converting solar energy into electrical energy based on photovoltaic effect, utilizes the solar module that microelectronic process engineering is made to complete the work converting solar energy into electrical energy.This technology has not consumption of fossil fuels, non-environmental-pollution, reliability is high, the life-span is long, security performance is good, be applicable to decentralized power supply, expand energy convenient, with the advantage such as other power-supply system compatibilities.
Solar photovoltaic technology need to become industrial frequency AC by direct current from inverter, to adapt to numerous ac electric apparatus conditions of power supply.
Photovoltaic combining inverter is tested, need to provide the direct supply of simulation photovoltaic generation as the input of photovoltaic DC-to-AC converter, by changing input and the output condition of tested photovoltaic combining inverter, its input end of Real-time Collection, the voltage of output terminal, current value, through suitable routine processes, obtain the result that tested photovoltaic combining inverter is tested.
Current tested photovoltaic DC-to-AC converter input end power supply generally adopts the way of stabilized voltage supply resistance in series to provide.This method can not be measured photovoltaic DC-to-AC converter characteristic, for example MPPT maximum power point tracking characteristic exactly; Can not reflect exactly that the working environment parameter such as illumination, temperature changes the impact of the grid-connected characteristic on inverter.
Utilize the technology of FEEDBACK CONTROL reference voltage to obtain the output characteristics very approximate with true photovoltaic electrification component characteristic by stabilized voltage supply.The technical matters existing is: linear stabilized power supply inefficiency, especially near short-circuit current point, adjust pipe tube voltage drop and approach maximal value, the electric current that flows through adjustment pipe also approaches maximal value, make to adjust pipe dissipated power very large, cause power-efficient very low, adjust pipe heating huge simultaneously, very easily damage.Although adopt switching power supply structure efficiency greatly to improve, but output is difficult for removing by spike, supply with for tested photovoltaic DC-to-AC converter provides simulated light photovoltaic assembly generating electric energy by this structure, likely cause MPPT maximum power point tracking failure, produce the erroneous judgement to tested photovoltaic DC-to-AC converter.The multistage voltage stabilizing major loop device of a kind of power supply for simulated light photovoltaic assembly characteristic proposing herein, the method that adopts Switching Power Supply to combine with linear power supply, improve the low shortcoming of linear power supply conversion efficiency, reduced again the larger defect of Switching Power Supply output ripple.
Utility model content
The purpose of this utility model is to provide a kind of multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic, and it has the output characteristics of linear stabilized power supply, and steadily without switching spike, and efficiency is far above the advantage of linear power supply.
The technical scheme that the utility model adopts is, about the multistage voltage stabilizing major loop device of the power supply of simulated light photovoltaic assembly characteristic, is mainly made up of multistage mu balanced circuit and control circuit.Multistage mu balanced circuit at least comprises: the output of current rectifying and wave filtering circuit is connected with the input of switching power supply unit, and the output of switching power supply unit is connected with the input of linear stabilized power supply unit.Control circuit at least comprises: the output of linear stabilized power supply output end voltage sampling unit is connected with the input end of linear stabilized power supply error amplification comparing unit respectively, the output of current sampling unit is connected with the input of benchmark generating unit, the output of remembeing year generating unit is connected with the input that belt switch stabilized voltage supply error amplification comparing unit amplifies comparing unit with linear stabilized power supply error respectively, the stabilized voltage supply error of switch amplify output that comparing unit and linear stabilized power supply error amplify comparing unit respectively with the power tube of switching power supply, the transistor of linear stabilized power supply is connected.
Described multistage mu balanced circuit of living hoist device for the multistage voltage stabilizing of simulated light photovoltaic assembly characteristic power supply, comprise current rectifying and wave filtering circuit, switching power supply unit and linear stabilized power supply unit, require to stablize the photovoltaic family curve under output certain power.Its principal character is: require to adopt half bridge converter according to design switching power supply unit, send into benchmark generating unit after having gathered voltage, benchmark generating unit is used for simulating the solar property curve at particular light, temperature.Quiescent potential is sent into switching power supply error and amplify comparing unit and linear stabilized power supply error amplification comparing unit and the high 2-3V of the former voltage ratio the latter voltage.
Two described voltage sampling circuits, linear stabilized power supply output end voltage sampling unit 5 and switching power supply output end voltage sampling unit 2 its principal characters are: switching power supply output end voltage sampling unit 2 and linear stabilized power supply output end voltage sampling unit 5 are used for doing interior loop voltag fine setting, make output services on photovoltaic property curve, linear stabilized power supply output end voltage sampling unit 5 is sent into benchmark generating unit 7, for finding up-to-date working point.
The beneficial effect of utility model is, a kind of multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic is provided, the method that adopts Switching Power Supply to combine with linear power supply, can be by ring fine setting in Switching Power Supply and linear power supply, also can adjust load operation point by benchmark generating unit, this device has improved the low shortcoming of linear power supply conversion efficiency, has reduced again the larger defect of Switching Power Supply output ripple.
Brief description of the drawings
Fig. 1 is the structural representation of the multistage voltage stabilizing major loop device of a kind of power supply for simulated light photovoltaic assembly characteristic of the utility model;
In figure, 1. switching power supply unit, 2. switching power supply output end voltage sampling unit, 3. switching power supply error is amplified comparing unit, 4. linear stabilized power supply unit, 5. linear stabilized power supply output end voltage sampling unit, 6. linear power supply error is amplified comparing unit, 7. benchmark generating unit, 8. rectification filtering unit, 9. current sampling unit.
Embodiment
As shown in Figure 1, a kind of multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic, it is characterized by: comprise multistage mu balanced circuit and control circuit, described multistage mu balanced circuit at least comprises: switching power supply unit 1, linear stabilized power supply unit 4, rectification filtering unit 8.The output of rectification filtering unit 8 is connected with switching power supply unit 1 input end, and the output terminal of switching power supply unit 1 is connected with the input end of linear stabilized power supply unit 4; Described control circuit at least comprises that linear power supply unit output end voltage sampling unit 5, current sampling unit 9, benchmark generating unit 7, Switching Power Supply error are amplified comparing unit 3, linear power supply error is amplified comparing unit 6.The output terminal of Switching Power Supply output end voltage sampling unit 2 is connected with the input end that Switching Power Supply error is amplified comparing unit, the output terminal of linear power supply unit output end voltage sample circuit 5 amplifies comparing unit 6 with linear power supply error respectively, benchmark generating unit 7 is connected, the output of current sampling unit is connected with benchmark generating unit 7, and the output of benchmark generating unit 7 is amplified comparing unit with Switching Power Supply error and is connected with linear power supply error amplification comparing unit 6.
As shown in Figure 1, the two-way reference voltage that benchmark generating unit sends, can be by actual light be shone, solar panel at temperature carries out voltage, current measurement, record data, with a 3V stabilivolt and TL431 series connection, draw respectively two terminals in stabilivolt upper end and middle-end, respectively as benchmark output terminal, the output of TL431 is by control chip control, in control chip, can record the family curve data under different condition, the control chip of benchmark generating unit is sent in the output of linear power supply unit output end voltage sample circuit 5, find corresponding current work point, with the Voltage-output of its control TL431.
As shown in Figure 1, a kind of multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic, its main circuit adopts multistage mu balanced circuit, be respectively switching power supply unit 1 and linear stabilized power supply unit 4, inside, switching power supply unit can be finely tuned, and stablizes output, and it is exported big or small decision and can be determined by benchmark generating unit 7, linear stabilized power supply unit and switching power supply unit class seemingly, are divided into interior ring fine setting and outer shroud and adjust two links.
As shown in Figure 1, the output of switching power supply unit 1 is connected with the input of linear stabilized power supply unit 4, the voltage ratio linear stabilized power supply unit 4 high 2～3V of switching power supply unit 1.Linear power supply unit output end voltage sampling unit 5, linear power supply unit output end current sampling unit 9 are sent into and in benchmark generating unit 7, are controlled benchmark generating unit 7 and send two-way reference voltage value, control the multistage voltage stabilizing major loop device of the power supply of photovoltaic module characteristic and can stablize output photovoltaic property curve.
Claims (3)
1. the multistage voltage stabilizing major loop device of the power supply for simulated light photovoltaic assembly characteristic, it is characterized by: comprise multi-level pmultistage circuit and control circuit, described multistage mu balanced circuit part at least comprises: rectification filtering unit (8), switching power supply unit (1) and linear stabilized power supply unit (4), the output of rectification filtering unit (8) is connected with switching power supply unit (1) input end, and the output terminal of switching power supply unit (1) is connected with the input end of linear stabilized power supply unit (4), described control circuit at least comprises linear power supply unit output end voltage sampling unit (5), linear power supply unit output end current sampling unit (9), benchmark generating unit (7), linear stabilized power supply unit output end voltage sampling unit (5), electric current electricity sampling unit (9), switching power supply error is amplified comparing unit (3), linear power supply error is amplified comparing unit (6), the output terminal of linear power supply unit output end current sampling unit (9), the output terminal of linear stabilized power supply output end voltage sampling unit (5) is connected with benchmark generating unit (7) respectively, the output of benchmark generating unit (7) is amplified comparing unit (3) with switching power supply error respectively, linear power supply error is amplified comparing unit (6) and is connected.
2. the multistage voltage stabilizing major loop device of a kind of power supply for simulated light photovoltaic assembly characteristic as claimed in claim 1, is characterized in that: adopt switching power supply and linear stabilized power supply series system, multistage voltage stabilizing.
3. the multistage voltage stabilizing major loop device of a kind of power supply for simulated light photovoltaic assembly characteristic as claimed in claim 1, is characterized in that: the output voltage of described switching power supply unit (1) is than the high 2～3V of output voltage of linear stabilized power supply unit (4).
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| CN201320838199.6U CN203720698U (en) | 2013-12-18 | 2013-12-18 | Multistage voltage stabilizing main circuit device of power supply for simulating properties of photovoltaic module |
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| CN201320838199.6U CN203720698U (en) | 2013-12-18 | 2013-12-18 | Multistage voltage stabilizing main circuit device of power supply for simulating properties of photovoltaic module |
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| CN203720698U true CN203720698U (en) | 2014-07-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157731A (en) * | 2015-09-16 | 2015-12-16 | 成都众山科技有限公司 | Two-stage-voltage-stabilization intelligent transmitter power supply |
| CN105703711A (en) * | 2016-03-16 | 2016-06-22 | 哈尔滨工业大学深圳研究生院 | Solar array simulator with switch-type voltage source and linear current source combined |
| CN105897159A (en) * | 2016-04-08 | 2016-08-24 | 哈尔滨工业大学深圳研究生院 | High-efficiency solar simulator |
| CN106527561A (en) * | 2017-01-04 | 2017-03-22 | 西南应用磁学研究所 | Efficient magnetic tuning device drive circuit with voltage tracking function |
| CN109240398A (en) * | 2018-09-18 | 2019-01-18 | 深圳市航天新源科技有限公司 | Solar battery array simulator working point control type I-V outer loop control method |
| CN114732356A (en) * | 2022-03-07 | 2022-07-12 | 电子科技大学 | Miniature wearable photoacoustic signal acquisition system |
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2013
- 2013-12-18 CN CN201320838199.6U patent/CN203720698U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157731A (en) * | 2015-09-16 | 2015-12-16 | 成都众山科技有限公司 | Two-stage-voltage-stabilization intelligent transmitter power supply |
| CN105703711A (en) * | 2016-03-16 | 2016-06-22 | 哈尔滨工业大学深圳研究生院 | Solar array simulator with switch-type voltage source and linear current source combined |
| CN105897159A (en) * | 2016-04-08 | 2016-08-24 | 哈尔滨工业大学深圳研究生院 | High-efficiency solar simulator |
| CN105897159B (en) * | 2016-04-08 | 2018-01-23 | 哈尔滨工业大学深圳研究生院 | A kind of solar simulator |
| CN106527561A (en) * | 2017-01-04 | 2017-03-22 | 西南应用磁学研究所 | Efficient magnetic tuning device drive circuit with voltage tracking function |
| CN106527561B (en) * | 2017-01-04 | 2018-07-17 | 西南应用磁学研究所 | A kind of high-efficiency magnetic tuning device driving circuit of tracking with voltage |
| CN109240398A (en) * | 2018-09-18 | 2019-01-18 | 深圳市航天新源科技有限公司 | Solar battery array simulator working point control type I-V outer loop control method |
| CN114732356A (en) * | 2022-03-07 | 2022-07-12 | 电子科技大学 | Miniature wearable photoacoustic signal acquisition system |
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| 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: 20140716 Termination date: 20151218 |
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| EXPY | Termination of patent right or utility model |