A photovoltaic power grid-connected system based on solid-state transformers

A solid-state transformer and photovoltaic power generation technology, which is applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve the problems of no electrical isolation between input and output, increase equipment cost and volume, and small input voltage range, so as to achieve voltage stability and overcome Adverse effects, fast dynamic response effect
CN103227474BInactive Publication Date: 2015-08-19TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2015-08-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a photovoltaic power generation grid-connected system based on a solid-state transformer. The photovoltaic power generation grid-connected system based on the solid-state transformer comprises a photovoltaic array, the solid-state transformer, an output filter, a load and a power grid, wherein the solid-state transformer is connected with the photovoltaic array, the output filter and the load respectively; and the output filter is connected with the power grid. Compared with the prior art, the photovoltaic power generation grid-connected system based on the solid-state transformer has the advantages of high stability, strong anti-interference performance, quick dynamic response, capacity of realizing bidirectional flow of energy and the like.
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Description

technical field

[0001] The invention relates to a grid-connected photovoltaic power generation system, in particular to a photovoltaic power grid-connected system based on a solid-state transformer. Background technique

[0002] In recent years, with the decline in the cost of photovoltaic cells and the improvement of photovoltaic power generation efficiency, the application prospects of photovoltaic power generation are unprecedentedly broad. Grid-connected photovoltaic power generation is an important development direction of photovoltaic power generation. Compared with independent photovoltaic power generation systems, energy storage can be omitted However, due to the randomness, intermittent, and periodicity of photovoltaic power generation, the safety and reliability of grid-connected photovoltaic power plants and their access systems are facing new challenges.

[0003] The classic circuit structure of photovoltaic power generation grid-connected system is divided into ...

Claims

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