Multi-path MPPT (maximum power point tracking) circuit and solar photovoltaic inverter

A solar cell and circuit technology, applied in the field of solar power generation, can solve the problems of difficult construction and low power generation efficiency, and achieve the effect of reducing the difficulty of construction

Inactive Publication Date: 2013-01-02
BEIJING SEVENSTAR ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: how to solve the problems of high

Method used

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  • Multi-path MPPT (maximum power point tracking) circuit and solar photovoltaic inverter
  • Multi-path MPPT (maximum power point tracking) circuit and solar photovoltaic inverter
  • Multi-path MPPT (maximum power point tracking) circuit and solar photovoltaic inverter

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] Such as figure 1 As shown, the multi-channel MPPT circuit of the present embodiment includes four branches to illustrate the present invention, but does not limit the scope of the present invention, including: four MPPT branches, and the present invention will be specifically described below with one of the branches, as figure 2 As shown, each MPPT branch is provided with two input ends and two output ends, an energy storage unit 1 and a rectification unit 2 are arranged between the first input end and the first output end, and the energy storage unit 1 The first end is connected to the first input end, the first end of the rectification unit 2 is connected to the...

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Abstract

The invention discloses a multi-path MPPT (maximum power point tracking) circuit and a solar photovoltaic inverter, and relates to the technical field of solar power generation. The multi-path MPPT circuit comprises multiple MPPT branch circuits, wherein each MPPT branch circuit is provided with two input ends and two output ends; energy storing units (1) and rectifying units (2) are arranged between first input ends and first output ends, and first ends of the energy storing units (1) are connected with the first input ends; first ends of the rectifying units (2) are connected with the first output ends, second ends of the energy storing units (1) are connected with second ends of the rectifying units (2), and the joint is connected with a first end of a switching tube unit (3); and a second end of the switching tube unit (3) is connected with second input ends and second output ends respectively. The multi-path MPPT circuit provided by the invention is provided with the multiple MPPT branch circuits which are connected in parallel, the appropriate conduction time of the switching tube is selected according to the conditions of the multiple MPPT branch circuits, MPPT points of the branch circuits are consistent, the construction difficulty is reduced, and the generating efficiency of a BIPV(building integrated photovoltaics) system is exerted to the maximum.

Description

technical field [0001] The invention relates to the technical field of solar power generation, in particular to a multi-channel MPPT circuit and a solar photovoltaic inverter. Background technique [0002] With the increasing emphasis on world environmental issues and national energy strategy issues, the large-scale development of new energy has received widespread attention from all countries in the world. The new energy industry has become the fastest growing industry in the world, and solar power will surpass nuclear power in the 21st century. As one of the most important basic energy sources, Building Integrated Photovoltaic (BIPV) has a good development prospect. In the future, BIPV will occupy 60% of the photovoltaic power generation market share, and has a very large room for development. [0003] Photovoltaic inverters are an important part and key link of photovoltaic power generation systems. The direct current generated by building-integrated photovoltaics must be...

Claims

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Application Information

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IPC IPC(8): H02N6/00H02M3/155H02M7/42H02S40/30H02S40/32
CPCY02E10/56Y02B10/14Y02A30/60Y02B10/10
Inventor 刘建芳黄聚永魏路卢学祥龚馨宇
Owner BEIJING SEVENSTAR ELECTRONICS CO LTD
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