CN202586793U - Photovoltaic grid-connected inverter with input reverse-connection protection - Google Patents
Photovoltaic grid-connected inverter with input reverse-connection protection Download PDFInfo
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- CN202586793U CN202586793U CN 201220076822 CN201220076822U CN202586793U CN 202586793 U CN202586793 U CN 202586793U CN 201220076822 CN201220076822 CN 201220076822 CN 201220076822 U CN201220076822 U CN 201220076822U CN 202586793 U CN202586793 U CN 202586793U
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- incoming end
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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 with input reverse-connection protection. The photovoltaic grid-connected inverter comprises a positive incoming end, a first resistor, a second resistor, an N-channel MOS tube with a body diode, and a negative incoming end which are successively connected in series, wherein a grid of the N-channel MOS tube is connected with a driving circuit, a drain of the N-channel MOS tube is connected with the negative incoming end, a source of the N-channel MOS tube is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the first resistor and a voltage detecting circuit, and the voltage detecting circuit and the driving circuit are respectively connected with a master control circuit. According to the photovoltaic grid-connected inverter with input reverse-connection protection, the reverse-connection protection is finished highly efficiently and safely, and the power loss is low, thereby ensuring the photovoltaic grid-connected inverter operates safely, stably and reliably; and the photovoltaic grid-connected inverter with input reverse-connection protection is reasonable in the design and low in the cost, which possesses good marketing popularization values.
Description
Technical field
The utility model relates to a kind of photovoltaic combining inverter, is specifically related to a kind of photovoltaic combining inverter of tape input reverse connecting protection.
Background technology
At present, the anti-reverse protective circuit of photovoltaic charge controller seals in a power diode in main circuit, prevent the damage that the solar cell reversal connection causes.When solar cell connects inverse time, protect through the reverse blocking effect of power diode.But the power diode forward conduction voltage drop reduced entire controller efficient, and controller heat dissipation design burden is heavier with to flow through the power loss that electric current causes bigger, has increased the cost of product greatly, is unfavorable for the market competition of product.
The utility model content
The purpose of the utility model is to overcome defective of the prior art; A kind of photovoltaic combining inverter of tape input reverse connecting protection is provided; It can not only highly effective and safe the completion reverse connecting protection, and power loss is little, guarantees photovoltaic combining inverter safe operation, reliable and stable.
For realizing above-mentioned purpose; The technical scheme of the utility model is the photovoltaic combining inverter of a kind of tape input reverse connecting protection of design; The positive incoming end, first resistance, second resistance, the N-channel MOS pipe of belt body diode, negative incoming end that comprise successively serial connection; The grid of N-channel MOS pipe is connected with drive circuit, and the drain electrode of N-channel MOS pipe is connected with negative incoming end, and the source electrode of N-channel MOS pipe is connected with an end of second resistance; The other end of second resistance is connected with voltage detecting circuit with first resistance respectively, and voltage detecting circuit, drive circuit are connected with governor circuit respectively.
Preferably, be serially connected with first fuse between the said positive incoming end and first resistance.
Preferably, be serially connected with second fuse between the drain electrode of said N-channel MOS pipe and negative incoming end.
Preferably, said governor circuit also is connected with the warning circuit of band warning device.
Preferably, be serially connected with dc switch between said first resistance and second resistance.
Preferably, be serially connected with relay between said first resistance and second resistance.
When solar cell just connect, promptly the positive pole of solar cell connect positive incoming end, and the negative pole of solar cell connects negative incoming end; The voltage of solar cell is added on the body diode of first resistance, second resistance, N-channel MOS pipe, the body diode forward conduction, and the voltage of solar cell is sent into voltage detecting circuit through after the dividing potential drop; Voltage detecting circuit sends to governor circuit with voltage signal; Governor circuit is judged solar array voltage, and when solar array voltage meets the requirements, governor circuit makes the conducting of N-channel MOS pipe through drive circuit; Has low conduction impedance after the conducting of N-channel MOS pipe; Body diode in its body of bypass, so the conducting power consumption reduces greatly, power loss is little.When the solar cell reversal connection, promptly the negative pole of solar cell connects positive incoming end, and the positive pole of solar cell connects negative incoming end; The voltage of solar cell is added on the body diode of first resistance, second resistance, N-channel MOS pipe; Body diode reverse is ended, and voltage detecting circuit detects less than solar array voltage, and the N-channel MOS pipe can not get driving; Keep turn-offing the protection photovoltaic combining inverter.
The advantage and the beneficial effect of the utility model are: a kind of photovoltaic combining inverter of tape input reverse connecting protection is provided, and the completion reverse connecting protection that it can not only highly effective and safe, and power loss is little, guarantees photovoltaic combining inverter safe operation, reliable and stable.And the photovoltaic combining inverter of this tape input reverse connecting protection is reasonable in design, and cost is low, has good market popularization value.
Description of drawings
Fig. 1 is the sketch map of the photovoltaic combining inverter of this tape input reverse connecting protection.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection range of the utility model with this.
The technical scheme of the utility model practical implementation is:
A kind of photovoltaic combining inverter of tape input reverse connecting protection; Comprise successively positive incoming end PV+, first resistance R 1, second resistance R 2 of serial connection, the N-channel MOS pipe Q1 of belt body diode, negative incoming end PV-; The grid of N-channel MOS pipe Q1 is connected with drive circuit; The drain electrode of N-channel MOS pipe Q1 is connected with negative incoming end PV-; The source electrode of N-channel MOS pipe Q1 is connected with an end of second resistance R 2, and the other end of second resistance R 2 is connected with voltage detecting circuit with first resistance R 1 respectively, and voltage detecting circuit, drive circuit are connected with governor circuit respectively.Said positive incoming end PV+ and 1 of first resistance R are serially connected with the first fuse F U1.Be serially connected with the second fuse F U2 between the drain electrode of said N-channel MOS pipe Q1 and negative incoming end PV-.Said governor circuit also is connected with warning circuit, voltage stabilizing circuit and the inverter circuit of band warning device.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (6)
1. the photovoltaic combining inverter of a tape input reverse connecting protection; It is characterized in that; The positive incoming end, first resistance, second resistance, the N-channel MOS pipe of belt body diode, negative incoming end that comprise successively serial connection; The grid of N-channel MOS pipe is connected with drive circuit, and the drain electrode of N-channel MOS pipe is connected with negative incoming end, and the source electrode of N-channel MOS pipe is connected with an end of second resistance; The other end of second resistance is connected with voltage detecting circuit with first resistance respectively, and voltage detecting circuit, drive circuit are connected with governor circuit respectively.
2. the photovoltaic combining inverter of tape input reverse connecting protection according to claim 1 is characterized in that, is serially connected with first fuse between the said positive incoming end and first resistance.
3. the photovoltaic combining inverter of tape input reverse connecting protection according to claim 1 is characterized in that, is serially connected with second fuse between the drain electrode of said N-channel MOS pipe and negative incoming end.
4. the photovoltaic combining inverter of tape input reverse connecting protection according to claim 1 is characterized in that, said governor circuit also is connected with the warning circuit of band warning device.
5. the photovoltaic combining inverter of tape input reverse connecting protection according to claim 1 is characterized in that, is serially connected with dc switch between said first resistance and second resistance.
6. the photovoltaic combining inverter of tape input reverse connecting protection according to claim 1 is characterized in that, is serially connected with relay between said first resistance and second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220076822 CN202586793U (en) | 2012-03-05 | 2012-03-05 | Photovoltaic grid-connected inverter with input reverse-connection protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220076822 CN202586793U (en) | 2012-03-05 | 2012-03-05 | Photovoltaic grid-connected inverter with input reverse-connection protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586793U true CN202586793U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220076822 Expired - Fee Related CN202586793U (en) | 2012-03-05 | 2012-03-05 | Photovoltaic grid-connected inverter with input reverse-connection protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN202586793U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595027B (en) * | 2013-11-07 | 2017-05-03 | 浪潮集团有限公司 | Method for preventing power output currents from flowing backwards |
| CN107947145A (en) * | 2017-12-13 | 2018-04-20 | 郑州云海信息技术有限公司 | A kind of anti-battery reversal connection circuit of charged pool power module |
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
| CN112596000A (en) * | 2020-12-02 | 2021-04-02 | 爱士惟新能源技术(江苏)有限公司 | Method and device for detecting reverse connection of PV input ends of photovoltaic inverters |
-
2012
- 2012-03-05 CN CN 201220076822 patent/CN202586793U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595027B (en) * | 2013-11-07 | 2017-05-03 | 浪潮集团有限公司 | Method for preventing power output currents from flowing backwards |
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
| CN107947145A (en) * | 2017-12-13 | 2018-04-20 | 郑州云海信息技术有限公司 | A kind of anti-battery reversal connection circuit of charged pool power module |
| CN107947145B (en) * | 2017-12-13 | 2019-05-28 | 郑州云海信息技术有限公司 | A kind of anti-battery reversal connection circuit of charged pool power module |
| CN112596000A (en) * | 2020-12-02 | 2021-04-02 | 爱士惟新能源技术(江苏)有限公司 | Method and device for detecting reverse connection of PV input ends of photovoltaic inverters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGYIN DATIAN TECHNOLOGY SERVICE CO., LTD. Free format text: FORMER OWNER: WUXI SHENGLAIDE NEW ENERGY TECHNOLOGY CO., LTD. Effective date: 20150709 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150709 Address after: 214400, room 3, building 8, No. 1715 West Binjiang Road, Jiangyin, Jiangsu Patentee after: Jiangyin Datian Technology Service Co., Ltd. Address before: 214400 No. 201 Jin Shan Road, Jiangsu, Jiangyin Patentee before: Wuxi SLD Power Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20160305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |