并网变流器功率单元设计与直流载流需求研究

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Abstract Power unit is a core component of converters. With the converter capacity increases, power unit need to be designed by modular method. In this paper, currently mainstream modular technical routes are summarized, advantages and disadvantages of half bridge and full bridge power unit are compared, and key technology in the design of power unit is analyzed. It is pointed out that, the DC busbar current has the attribute of irregularity and discontinuity. This is important to DC busbar design, but the research in this direction is relatively poor. This paper derives the related theoretical formula to calculate the DC busbar current. The results of simulation and experiment verify the correctness of the formula.

Key words： grid-connected converter power unit modularization dc busbar current

Published: 13 December 2016

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	Articles by authors
	Qu Xinghong
	Zhao Zilong
	Yu Bin
	Liu Yang

Cite this article:

Qu Xinghong,Zhao Zilong,Yu Bin等. Study on Power Unit Design and DC Busbar Current Carrying Demand for Grid-connected Converter[J]. Electrical Engineering, 2016, 17(12): 35-40.

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http://dqjs.cesmedia.cn/EN/Y2016/V17/I12/35

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