Topological structure for solar photovoltaic inverter

A solar photovoltaic and topology technology, applied in photovoltaic power generation, instrumentation, adjustment of electrical variables, etc., can solve the problems of unfavorable overall wiring, low conversion efficiency, large electromagnetic interference, etc., to reduce costs, reduce losses, and reduce wiring space. Effect

Inactive Publication Date: 2009-01-21
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the high voltage on the DC BUS, there must be a certain isolation space on the wiring of the circuit, which is not conducive to the overall wiring;
[0006] Two-stage voltage conversion is required, resulting in low conversion efficiency;
[0007] Due to the boost e

Method used

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  • Topological structure for solar photovoltaic inverter
  • Topological structure for solar photovoltaic inverter
  • Topological structure for solar photovoltaic inverter

Examples

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Embodiment Construction

[0019] refer to figure 2 , this figure is a composition structure diagram of an embodiment of the solar photovoltaic inverter topology provided by the present invention; as shown in the figure, this embodiment is mainly composed of the following parts connected in sequence:

[0020] Solar Panel (Solar Panel) 1, DC-AC inverter circuit 2, high frequency transformer circuit 3, bridge rectifier circuit 4, power frequency commutation circuit 5. figure 2 The picture in the middle is the power frequency inverter circuit, which is wrong, it should be the power frequency commutation circuit. There are many half-wave rectifications in the attached picture that are wrong, it should be full-wave rectification.

[0021] refer to image 3 , the connection relationship, function, and specific structure of the above-mentioned parts in the circuit are as follows:

[0022] The input end of the DC-AC inverter circuit is directly connected to the two ends DC+ and DC- of the solar panel Solar...

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PUM

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Abstract

The present invention discloses a topological structure of a inverter, which comprises a solar panel, a high-frequency transformation circuit, and a DC-AC inversion circuit. The input end of the DC-AC inversion circuit is directly connected with the two ends of the solar panel; the original side of the high-frequency transformation circuit is connected with the output end of the DC-AC inversion circuit, and the auxiliary side is connected with the input end of a bridge type rectification circuit; and the output end of the bridge type rectification circuit is also connected with a power frequency switching circuit. The topological structure of the inverter lowers the loss in the inversion, reduces the wiring space, improves the transforming conversion efficiency, decreases the cost and reduces the electromagnetic interference.

Description

technical field [0001] The invention relates to photovoltaic power generation inverter technology, in particular to a topological structure of a solar photovoltaic inverter. Background technique [0002] As the world's energy shortage and environmental pollution become more and more serious, energy and the environment have become major basic issues facing mankind in the 21st century. The development and application of clean and renewable energy has attracted more and more attention from countries all over the world. In the past 20 to 30 years, solar photovoltaic (Photovoltaic, PV) power generation technology has been continuously developed, and photovoltaic grid-connected power generation has become one of the main ways to utilize solar energy. Carrying out research on grid-connected inverter systems for solar photovoltaic power generation has great theoretical and practical significance for alleviating energy and environmental problems, researching high-performance distribu...

Claims

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Application Information

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IPC IPC(8): H02M7/5387H02M3/335H02M5/458
CPCY02E10/56
Inventor 文励洪钟宇明刘家恒黄志昌仲照东
Owner SHENZHEN POLYTECHNIC
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