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A chain-type cascade self-synchronizing solar photovoltaic power generation control device and control method

A solar photovoltaic and power generation control technology, applied in the field of solar photovoltaic power generation, can solve the problems of low energy efficiency and low service life of battery panels, and achieve the effects of solving hot spot problems, prolonging life, and high cost performance

Active Publication Date: 2019-02-26
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

[0007] my country's photovoltaic power generation is mainly based on large-scale photovoltaic power plants. The centralized photovoltaic inverters or string photovoltaic inverters used generally have the problem of low energy efficiency of the battery panels, and at the same time, the service life of the battery panels is low due to the hot spot effect.

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  • A chain-type cascade self-synchronizing solar photovoltaic power generation control device and control method
  • A chain-type cascade self-synchronizing solar photovoltaic power generation control device and control method
  • A chain-type cascade self-synchronizing solar photovoltaic power generation control device and control method

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0038] see figure 1 , figure 1 It is a schematic diagram of a chain-type cascade self-synchronizing solar photovoltaic power generation control device of the present invention. As shown in the figure, a chain-type cascade self-synchronization solar photovoltaic power generation control device includes a solar panel 2, an energy storage synchronous rectification circuit 3, H-bridge superimposed wave chain cascaded grid-connected circuit 4, grid-connected control unit 5, AC voltage transformer 6 and AC current transformer 7;

[0039] The output end of the solar cell panel 2 is connected to the input end of the synchronous rectification circuit 3 containing energy storage, and the output end of the synchronous rectification circuit 3 containing energy storage is connected t...

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Abstract

A chain type cascaded self-synchronizing photovoltaic power generation controlling device comprises a solar cell panel, an energy storage included synchronous rectification circuit, an H-bridge stacked chain type cascaded grid-connected circuit, a grid-connected control unit, an AC voltage transformer and an AC current transformer. According to the invention, a chain type cascaded stacked grid-connected technology is used, a harmonic wave problem caused by an inverter is solved, included energy storage enables narrow fluctuation of output power of a photovoltaic power generation system, and the controlling device and method are high in the total power generation efficiency, smooth in output fluctuation of photovoltaic power generation and low in harmonic waves and have great significance.

Description

technical field [0001] The invention relates to the field of solar photovoltaic power generation, in particular to a chain-type cascade self-synchronizing solar photovoltaic power generation control device and a control method. Background technique [0002] Energy is an important material basis for the survival and development of human beings, and it is also an important factor affecting national security. Traditional petrochemical energy belongs to non-renewable energy and is facing the danger of depletion. On the other hand, due to the burning of fossil fuels, the atmosphere is heavily polluted. [0003] In order to solve the major problem of energy supply, countries all over the world have accelerated the development of new energy sources. As a clean energy, solar energy has the following characteristics: First, it is inexhaustible. Second, it is easily accessible and ubiquitous. Third, clean and pollution-free. [0004] The development and utilization of solar energ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02S40/30
CPCH02J3/385H02S40/00Y02E10/56
Inventor 解大张延迟李国杰
Owner SHANGHAI JIAOTONG UNIV
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