CN203278641U - Photovoltaic grid-connected inverter based on EMI filter - Google Patents
Photovoltaic grid-connected inverter based on EMI filter Download PDFInfo
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- CN203278641U CN203278641U CN 201320172025 CN201320172025U CN203278641U CN 203278641 U CN203278641 U CN 203278641U CN 201320172025 CN201320172025 CN 201320172025 CN 201320172025 U CN201320172025 U CN 201320172025U CN 203278641 U CN203278641 U CN 203278641U
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- magnet ring
- inverter
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- photovoltaic grid
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- 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
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Abstract
The utility model relates to a photovoltaic grid-connected inverter based on an EMI filter. The photovoltaic grid-connected inverter based on the EMI filter comprises a group of input magnet rings and a group of output magnet rings, the group of input magnet rings pass through a positive direct current bus and a negative direct current bus of the inverter at the same time and is arranged at the inlet wire side of a direct current bus capacitor, the group of output magnet rings pass through an alternating current output bus of the inverter and is arranged at the alternating current output side of the inverter. The problem that EMI filters applied to present photovoltaic grid-connected inverters are poor in conducted interference resistance is solved.
Description
Technical field
The utility model relates to a kind of photovoltaic combining inverter based on electromagnetic interface filter.
Background technology
Along with the attention of China to new energy technology, photovoltaic generating system is more and more extensive China's application, convert and photovoltaic combining inverter sends direct current energy as one with cell panel the AC energy that Gong is incorporated into the power networks that meets national standard to, the effect in photovoltaic generating system is extremely important.
In the large-sized photovoltaic power station, the electromagnetic interference that is produced by photovoltaic combining inverter causes very large interference to photovoltaic combining inverter itself and with communicating by letter of background monitoring, header box, make communication interruption, data distortion occur, cause the error rate to improve, order and in time to carry out, have a strong impact on the normal monitoring of photovoltaic plant.Conducted interference is administered it and can effectively be suppressed the electromagnetic interference that photovoltaic combining inverter produces as one of main path of electromagnetic interference.
The utility model content
The purpose of this utility model is to provide a kind of photovoltaic combining inverter based on electromagnetic interface filter, in order to the anti-not good problem of conducted interference performance of the photovoltaic combining inverter that solves existing application electromagnetic interface filter.
For achieving the above object, scheme of the present utility model is: a kind of photovoltaic combining inverter based on electromagnetic interface filter, comprise one group of input magnet ring and one group of output magnet ring, described one group of input magnet ring passes the positive and negative dc bus of inverter simultaneously, be located at dc-link capacitance inlet wire side, described one group of output magnet ring passes simultaneously inverter and exchanges the output bus, is located at inverter and exchanges outlet side, and described one group of input magnet ring and one group of output magnet ring include at least one magnet ring.
Described one group of input magnet ring and one group of output magnet ring are the common mode mounting means.
the beneficial effect that the utility model reaches: if conventional filter is directly installed on DC side and the AC of next-door neighbour IGBT, input and output comprise very large electric current and voltage harmonic components, make differential mode capacitor and common mode capacitance in electromagnetic interface filter flow through very large electric current (reaching tens of amperes), thereby cause the electromagnetic interface filter leakage current to exceed standard, the utility model respectively the direct current input side of inverter with exchange outlet side and be provided with one group of magnet ring, the common mode conducted interference that coordinates to suppress DC side of the magnet ring by the direct current input side and direct current input electromagnetic interface filter, and the magnet ring by exchanging outlet side is exported electromagnetic interface filter and is coordinated to suppress to exchange the output common mode conducted interference with exchanging, can be when satisfying safe leakage current, from disturbing the source to suppress to disturb, can effectively suppress the interference of electronic power switch in 700kHz～8MHz scope, rejection is better, and install simple.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is conduction transmission test result before the utility model uses;
Fig. 3 is conduction transmission test result after the utility model uses.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises two groups of high magnetic permeability amorphous magnet rings, that is: input magnet ring 8 and export magnet ring 9, wherein one group of magnet ring is arranged on the DC side that is close to IGBT, another group magnet ring is arranged on the AC of next-door neighbour IGBT, two groups of magnet rings are the common mode mounting means, and every group of magnet ring all comprises a magnet ring at least.
Input magnet ring 8(DC side magnet ring) pass simultaneously the inlet wire side that positive and negative dc bus is arranged on dc-link capacitance 7, guarantee magnet ring near i.e. 1,2,3,4,5,6 in the figure of IGBT three-phase bridge, and coordinate direct current input electromagnetic interface filter to suppress the common mode conducted interference of DC side; Output magnet ring 9(AC magnet ring) pass simultaneously A, B, C three-phase alternating current output line be arranged on the IGBT three-phase bridge namely 1,2,3,4,5,6 in figure exchange outlet sides, next-door neighbour IGBT three-phase bridge, and coordinate interchange output electromagnetic interface filter to suppress to exchange the output common mode conducted interference.
As shown in Figures 2 and 3, article two, broken line is respectively quasi-peak value and mean value limit value, a sawtooth waveforms p-wire of top is peak value, the sawtooth waveforms p-wire peak value test value that is as the criterion of below, by Fig. 2 and Fig. 3 are compared, the utility model has effectively suppressed the interference of electronic power switch in 700kHz～8MHz scope after using.
The utility model is subsidized by national high-tech research development plan (863 Program) problem, project number: 2012AA050206.
Claims (2)
1. photovoltaic combining inverter based on electromagnetic interface filter, it is characterized in that, comprise one group of input magnet ring and one group of output magnet ring, described one group of input magnet ring passes the positive and negative dc bus of inverter simultaneously, be located at dc-link capacitance inlet wire side, described one group of output magnet ring passes simultaneously inverter and exchanges the output bus, is located at inverter and exchanges outlet side, and described one group of input magnet ring and one group of output magnet ring include at least one magnet ring.
2. the photovoltaic combining inverter based on electromagnetic interface filter according to claim 1, is characterized in that, described one group of input magnet ring and one group of output magnet ring are the common mode mounting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320172025 CN203278641U (en) | 2013-04-08 | 2013-04-08 | Photovoltaic grid-connected inverter based on EMI filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320172025 CN203278641U (en) | 2013-04-08 | 2013-04-08 | Photovoltaic grid-connected inverter based on EMI filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278641U true CN203278641U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320172025 Expired - Lifetime CN203278641U (en) | 2013-04-08 | 2013-04-08 | Photovoltaic grid-connected inverter based on EMI filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278641U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887956A (en) * | 2014-04-15 | 2014-06-25 | 上海西艾爱电子有限公司 | High-voltage and large-current harmonics filter for photovoltaic inverter system |
| US9974201B1 (en) | 2016-10-28 | 2018-05-15 | General Electric Company | High power feedthrough for use with a high frequency power converter |
| CN108039815A (en) * | 2017-12-15 | 2018-05-15 | 西安许继电力电子技术有限公司 | A kind of electromagnetic interference suppression circuit and its operating method |
-
2013
- 2013-04-08 CN CN 201320172025 patent/CN203278641U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887956A (en) * | 2014-04-15 | 2014-06-25 | 上海西艾爱电子有限公司 | High-voltage and large-current harmonics filter for photovoltaic inverter system |
| CN103887956B (en) * | 2014-04-15 | 2016-01-20 | 上海西艾爱电子有限公司 | A kind of high-voltage great-current harmonic filter being suitable for photovoltaic inverting system and using |
| US9974201B1 (en) | 2016-10-28 | 2018-05-15 | General Electric Company | High power feedthrough for use with a high frequency power converter |
| CN108039815A (en) * | 2017-12-15 | 2018-05-15 | 西安许继电力电子技术有限公司 | A kind of electromagnetic interference suppression circuit and its operating method |
| CN108039815B (en) * | 2017-12-15 | 2020-02-07 | 西安许继电力电子技术有限公司 | Electromagnetic interference suppression circuit and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131129 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: XJ ELECTRIC Co.,Ltd. Patentee after: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170503 Address after: 710000 Shaanxi City, Xi'an province high tech Road No. 38 Xi'an innovation center, B, block, room 1, room 103 Patentee after: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Co-patentee before: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. Patentee before: XJ ELECTRIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |