Power conditioning system and method based on public bus

A technology of electric power regulation and public bus, which is applied in the field of power regulation system based on public bus, can solve the problems of simple working conditions, inability to connect in parallel, low energy utilization rate, etc., and achieve the effect of simple electrical structure and low structural cost

Pending Publication Date: 2014-10-08
安徽启光能源科技研究院有限公司
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AI Technical Summary

Problems solved by technology

[0003] This kind of structure has low energy utilization rate and simple working conditions, and cannot effectively dispatch the entire system
When the sun is not enough, it cannot be connected to the mains network, which limits the power consumption of households and brings great inconvenience

Method used

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  • Power conditioning system and method based on public bus
  • Power conditioning system and method based on public bus
  • Power conditioning system and method based on public bus

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Embodiment Construction

[0015] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0016] The power conditioning system based on the common bus provided by the present invention is as figure 1 shown. The whole system is composed of photovoltaic modules 3, lithium batteries 4, mains network 1, load 2 and power converters. The photovoltaic modules 3 form a common DC bus through the Boost circuit 5, and the lithium batteries 4 are connected through the Buck-Boost conversion circuit 7....

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Abstract

The invention relates to a power conditioning system and method based on a public bus, and belongs to the field of power conditioning. The power conditioning system comprises a photovoltaic module, a lithium battery, a Boost circuit, a Buck-Boost conversion circuit, a full-bridge inverter circuit, a mains supply network and a load. The public direct-current bus is formed by the photovoltaic module through the Boost circuit, the lithium battery is hung on the public direct-current bus through the Buck-Boost conversion circuit, the direct-current bus is connected into the mains supply network through the full-bridge inverter circuit, and a grid-connected switch is connected between the full-bridge inverter circuit and the mains supply network in series. The direct-current bus is connected with the load through the full-bridge inverter circuit. The system and method provide isolated island operation for a household power system, and photovoltaic power generation is achieved; grid-connected operation is achieved, a grid side converter carries out inversion; isolated island operation and battery power supply are achieved; grid-connected operation is achieved, four power utilization modes are rectified through the grid side converter, photovoltaic power generation and a mains supply can be freely switched, and the structural manufacturing cost is low.

Description

technical field [0001] The invention belongs to a power regulation system, and in particular relates to a power regulation system and method based on a public bus. Background technique [0002] The home-style green energy system that is widely used in China is generally a photovoltaic power generation system, which mainly includes solar photovoltaic panels, controllers, batteries, and inverters. The system structure is generally that the solar photovoltaic panel is connected to the battery through the charge controller, and then the battery is connected to the inverter, and the output terminal of the inverter is connected to the load. [0003] This kind of structure has low energy utilization rate and simple working conditions, and cannot effectively dispatch the entire system. When the sunlight is insufficient, it cannot be connected to the mains network, which limits the power consumption of households and brings great inconvenience. Contents of the invention [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J7/35H02S40/30H02S40/38
CPCY02B10/10Y02E10/56Y02E70/30
Inventor 王琦蔡旭姜广宇王海松丁卓禹郑琴
Owner 安徽启光能源科技研究院有限公司
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