CN202837418U - Grid-connected inverter test equipment and inverter energy recharge simulation grid test system - Google Patents
Grid-connected inverter test equipment and inverter energy recharge simulation grid test system Download PDFInfo
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- CN202837418U CN202837418U CN 201220379190 CN201220379190U CN202837418U CN 202837418 U CN202837418 U CN 202837418U CN 201220379190 CN201220379190 CN 201220379190 CN 201220379190 U CN201220379190 U CN 201220379190U CN 202837418 U CN202837418 U CN 202837418U
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Abstract
The utility model discloses grid-connected inverter test equipment which comprises a rectifying circuit, a control circuit and an inverter circuit. An input terminal of the rectifying circuit is connected with grid electricity. The grid electricity is a three-phase alternating-current supply. An output terminal of the rectifying circuit is connected with the inverter circuit. The rectifying circuit rectifies alternating current inputted from the grid electricity into direct current supplied to the inverter circuit. The rectifying circuit and the inverter circuit are further connected to a common grounding. The inverter circuit comprises a first inverter and a second inverter. The first inverter is electrically connected with the second inverter. The control circuit is electrically connected with the inverter circuit through a control port. The control circuit controls output voltage and output frequency of the first inverter and the second inverter to output according to test requirements. Through the above mode, the grid-connected inverter test equipment consumes energy without carrying load, and energy is saved. The platform test scheme is complete, and a photovoltaic array characteristic test can be finished.
Description
Technical field
The utility model relates to the grid-connected inverters field tests, particularly relates to a kind of combining inverter testing apparatus and affiliated inverter energy recharges the simulating grid test macro.
Background technology
In existing market, the grid-connected inverters testing power supply has " shunt load testing scheme " and " bus direct current supply scheme " two kinds of methods, and Fig. 1 is the shunt load testing scheme, and Fig. 2 is bus direct current supply scheme.The shunt load testing scheme can be tested all inverter functions, and the platform test scheme is complete, but in whole test process, load is in charged duty always, and the electric energy that inverter produces all consumes the serious waste energy always by load.In bus direct current supply scheme, inverter input energy is taken from the simulating grid dc bus, inverter output energy converts direct current to by simulating grid and resupplies inverter, although avoided like this consumption of load energy, but test event is single, can only do the functional verification test of simple grid side.Therefore, existing grid-connected inverters testing power supply system can not satisfy people's demand.
The utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of combining inverter testing apparatus, can avoid energy consumption, and more complete platform test scheme is provided.
Another purpose of the present utility model provides a kind of inverter energy of described combining inverter testing apparatus that uses and recharges the simulating grid test macro.
The utility model provides a kind of combining inverter testing apparatus, it comprises rectification circuit, control circuit and inverter circuit, the input end of described rectification circuit is connected with grid power, grid power is three-phase alternating-current supply, the output terminal of rectification circuit is connected with inverter circuit, rectification circuit becomes direct current to supply with inverter circuit the AC rectification of grid power input, rectification circuit and inverter circuit further are connected to a common ground, inverter circuit comprises the first inverter and the second inverter, the first inverter and the second inverter are electrically connected, control circuit and inverter circuit are electrically connected by control port, and control circuit is controlled the first inverter, the output voltage of the second inverter, output frequency is exported by test request.
In preferred embodiment of the utility model, described the first inverter and the second inverter are full bridge inverter.
In preferred embodiment of the utility model, described control circuit comprises center-control chip, electric power driving module, signal driver module, signal isolation module, signal amplification module and feedback module, the center-control chip is connected to export the work of electric power signal control electric power driving module with the input end of electric power driving module, and electric power driving module further is connected electric energy to be exported to the signal amplification module with the signal amplification module; The center-control chip also is connected to output control signals to the signal driver module with the input end of signal driver module, signal driver module, signal isolation module, signal amplification module are connected with inverter circuit and are connected to process this control signal, the signal amplification module further is connected to the signal driver module through feedback module, and this control signal is from another output terminal output and flow through according to this feedback module and signal driver module of signal amplification module.
In preferred embodiment of the utility model, be divided into two constituent signals behind the described control signal process signal isolation module, be input to respectively the input end of the first inverter and the second inverter after two constituent signals are amplified through the signal amplification module, two constituent signals are controlled respectively output voltage and the output frequency of the first inverter and the second inverter.
The utility model also provides a kind of inverter energy to recharge the simulating grid test macro, it comprises combining inverter testing apparatus and battery simulator, described combining inverter testing apparatus comprises rectification circuit, control circuit and inverter circuit, the input end of described rectification circuit is connected with grid power, grid power is three-phase alternating-current supply, the output terminal of rectification circuit is connected with inverter circuit, rectification circuit becomes direct current to supply with inverter circuit the AC rectification of grid power input, rectification circuit and inverter circuit further are connected to a common ground, inverter circuit comprises the first inverter and the second inverter, the first inverter and the second inverter are electrically connected, control circuit and inverter circuit are electrically connected by control port, control circuit is controlled the first inverter, the output voltage of the second inverter, output frequency is exported by test request, and combining inverter testing apparatus and battery simulator are connected in series.
In preferred embodiment of the utility model, described inverter energy recharges the simulating grid test macro and is connected with tested inverter, measure the performance index of tested inverter, described combining inverter testing apparatus, battery simulator and tested inverter are connected in series successively, described battery simulator exports electric energy to tested inverter, tested inverter generating and output AC test signal are to the combining inverter testing apparatus, this AC test signals flow through according to this first inverter and the second inverter, the second inverter output electric energy is to battery simulator.
The beneficial effects of the utility model are: non-loaded consumed energy, saved energy, and the platform test scheme is complete, can finish the characteristic of photovoltaic array test.
Description of drawings
Fig. 1 is the shunt load testing scheme schematic diagram of prior art;
Fig. 2 is the bus direct current supply scheme schematic diagram of prior art;
Fig. 3 is the application block scheme that inverter energy described in the utility model recharges the simulating grid test macro;
Fig. 4 is the electric circuit constitute block scheme of the control circuit of combining inverter testing apparatus described in the utility model;
The mark of each parts is as follows in the accompanying drawing: 100, combining inverter testing apparatus; 10, rectification circuit; 20, control circuit; 201, center-control chip; 202, electric power driving module; 203, signal driver module; 204, signal isolation module; 205, signal amplification module; 206, feedback module; 30, inverter circuit.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
See also Fig. 3 and Fig. 4, the utility model embodiment comprises:
A kind of combining inverter testing apparatus 100, comprise rectification circuit 10, control circuit 20 and inverter circuit 30, the input end of described rectification circuit 10 is connected with grid power, grid power is three-phase alternating-current supply, the output terminal of rectification circuit 10 is connected with inverter circuit 30, rectification circuit 10 becomes direct current to supply with inverter circuit 30 AC rectification of grid power input, rectification circuit 10 further is connected to a common ground with inverter circuit 30, inverter circuit 30 comprises the first inverter and the second inverter, the first inverter and the second inverter are electrically connected, control circuit 20 is electrically connected by control port with inverter circuit 30, control circuit 20 controls the first inverter, the output voltage of the second inverter, output frequency is exported by test request.
Wherein, described the first inverter and the second inverter are full bridge inverter.In the utility model,
Described control circuit 20 comprises center-control chip 201, electric power driving module 202, signal driver module 203, signal isolation module 204, signal amplification module 205 and feedback module 206, center-control chip 201 is connected to export 202 work of electric power signal control electric power driving module with the input end of electric power driving module 202, and electric power driving module 202 further is connected electric energy to be exported to signal amplification module 205 with signal amplification module 205; Center-control chip 201 also is connected to output control signals to signal driver module 203 with the input end of signal driver module 203, signal driver module 203, signal isolation module 204, signal amplification module 205 are connected with inverter circuit and are connected successively to process this control signal, signal amplification module 205 further is connected to the signal driver module through feedback module, and this control signal is from another output terminal output and flow through according to this feedback module 206 and signal driver module 203 of signal amplification module.
Be divided into two constituent signals behind the described control signal process signal isolation module 204, be input to respectively the input end of the first inverter and the second inverter after two constituent signals are amplified through signal amplification module 205, two constituent signals are controlled respectively output voltage and the output frequency of the first inverter and the second inverter.
From another angle, the utility model also provides a kind of inverter energy to recharge the simulating grid test macro, be used for the photovoltaic technology field, it comprises combining inverter testing apparatus 100 and battery simulator, and combining inverter testing apparatus 100 is connected in series with battery simulator.Described inverter energy recharges the simulating grid test macro and is connected with tested inverter, measure the performance index of tested inverter, described combining inverter testing apparatus 100, battery simulator and tested inverter are connected in series successively, described battery simulator exports electric energy to tested inverter, tested inverter generating and output AC test signal are to combining inverter testing apparatus 100, this AC test signals flow through according to this first inverter and the second inverter, the second inverter output electric energy is finished a test energy circulation process like this to battery simulator.
Recharge in the simulating grid test macro in inverter testing apparatus described in the utility model and inverter energy, the electric energy that tested inverter sends recharges battery simulator after inverter circuit 30 conversions, saved energy, the platform test scheme that this inverter energy recharges the simulating grid test macro is complete, in actual applications, described battery simulator can be replaced by other energy, and battery simulator can be finished the characteristic of photovoltaic array test after being replaced by solar power supply apparatus.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (6)
1. a combining inverter testing apparatus (100), it comprises rectification circuit (10), control circuit (20) and inverter circuit (30), it is characterized in that: the input end of described rectification circuit is connected with grid power, grid power is three-phase alternating-current supply, the output terminal of rectification circuit is connected with inverter circuit, rectification circuit becomes direct current to supply with inverter circuit the AC rectification of grid power input, rectification circuit and inverter circuit further are connected to a common ground, inverter circuit comprises the first inverter and the second inverter, the first inverter and the second inverter are electrically connected, control circuit and inverter circuit are electrically connected by control port, and control circuit is controlled the first inverter, the output voltage of the second inverter, output frequency is exported by test request.
2. combining inverter testing apparatus as claimed in claim 1, it is characterized in that: described the first inverter and the second inverter are full bridge inverter.
3. combining inverter testing apparatus as claimed in claim 1, it is characterized in that: described control circuit comprises center-control chip (201), electric power driving module (202), signal driver module (203), signal isolation module (204), signal amplification module (205) and feedback module (206), the center-control chip is connected to export the work of electric power signal control electric power driving module with the input end of electric power driving module, and electric power driving module further is connected electric energy to be exported to the signal amplification module with the signal amplification module; The center-control chip also is connected to output control signals to the signal driver module with the input end of signal driver module, signal driver module, signal isolation module, signal amplification module are connected with inverter circuit and are connected to process this control signal, the signal amplification module further is connected to the signal driver module through feedback module, and this control signal is from another output terminal output and flow through according to this feedback module and signal driver module of signal amplification module.
4. combining inverter testing apparatus as claimed in claim 3, it is characterized in that: be divided into two constituent signals behind the described control signal process signal isolation module, be input to respectively the input end of the first inverter and the second inverter after two constituent signals are amplified through the signal amplification module, two constituent signals are controlled respectively output voltage and the output frequency of the first inverter and the second inverter.
5. an inverter energy recharges the simulating grid test macro, comprise combining inverter testing apparatus and battery simulator, it is characterized in that: described combining inverter testing apparatus is the arbitrary described combining inverter testing apparatus of claim 1 to 4, and combining inverter testing apparatus and battery simulator are connected in series.
6. inverter energy as claimed in claim 5 recharges the simulating grid test macro, be connected with tested inverter, measure the performance index of tested inverter, it is characterized in that: described combining inverter testing apparatus, battery simulator and tested inverter are connected in series successively, described battery simulator exports electric energy to tested inverter, tested inverter generating and output AC test signal are to the combining inverter testing apparatus, this AC test signals flow through according to this first inverter and the second inverter, the second inverter output electric energy is to battery simulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379190 CN202837418U (en) | 2012-08-02 | 2012-08-02 | Grid-connected inverter test equipment and inverter energy recharge simulation grid test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379190 CN202837418U (en) | 2012-08-02 | 2012-08-02 | Grid-connected inverter test equipment and inverter energy recharge simulation grid test system |
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| CN202837418U true CN202837418U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220379190 Withdrawn - After Issue CN202837418U (en) | 2012-08-02 | 2012-08-02 | Grid-connected inverter test equipment and inverter energy recharge simulation grid test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830299A (en) * | 2012-08-02 | 2012-12-19 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test device and inverter energy recharging simulated power grid test system |
| CN103580498A (en) * | 2013-11-19 | 2014-02-12 | 苏州爱科博瑞电源技术有限责任公司 | High-power energy feedback type power grid analog device and control method adopted in same |
| CN106712527A (en) * | 2017-03-29 | 2017-05-24 | 天津瑞能电气有限公司 | Isolated type photovoltaic array simulator system based on calculation method |
| CN110133404A (en) * | 2019-05-17 | 2019-08-16 | 国网浙江省电力有限公司宁波供电公司 | Output signal analog device and secondary loading tests system |
-
2012
- 2012-08-02 CN CN 201220379190 patent/CN202837418U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830299A (en) * | 2012-08-02 | 2012-12-19 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test device and inverter energy recharging simulated power grid test system |
| CN102830299B (en) * | 2012-08-02 | 2015-06-03 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test device and inverter energy recharging simulated power grid test system |
| CN103580498A (en) * | 2013-11-19 | 2014-02-12 | 苏州爱科博瑞电源技术有限责任公司 | High-power energy feedback type power grid analog device and control method adopted in same |
| CN103580498B (en) * | 2013-11-19 | 2016-03-23 | 苏州爱科博瑞电源技术有限责任公司 | High-power energy can the control method of feedback type grid stimulating device and employing thereof |
| CN106712527A (en) * | 2017-03-29 | 2017-05-24 | 天津瑞能电气有限公司 | Isolated type photovoltaic array simulator system based on calculation method |
| CN106712527B (en) * | 2017-03-29 | 2023-09-29 | 天津瑞能电气有限公司 | Isolated photovoltaic array simulator system based on calculation method |
| CN110133404A (en) * | 2019-05-17 | 2019-08-16 | 国网浙江省电力有限公司宁波供电公司 | Output signal analog device and secondary loading tests system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150603 |
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| RGAV | Abandon patent right to avoid regrant |