基于改进均压算法的模块化多电平变流器开关频率分析

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Abstract This paper derives the analytical expressions of the modular multilevel converter (MMC) average switching frequency based on the inproved maximum sub-module voltage deviation,and analyzes the factors that affect the switching frequency.This paper can provide a theoretical guidance for the loss calculation and thermal design of MMC.The case studies are performed on a 46-level single-phase MMC under different operating conditions in Matlab/Simulink which proves the accuracy of this method.Meanwhile,a 9-level single-phase MMC laboratory prototype is built to verify the effectiveness of this method.

Key words： Modular multilevel converter switching frequency modified voltage balancing control VSC-HVDC

Received: 24 March 2015 Published: 15 July 2016

PACS:

TM464

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	Articles by authors
	Huang Shoudao
	Liao Wu
	Gao Jian
	Huang Sheng
	Rong Fei

Cite this article:

Huang Shoudao,Liao Wu,Gao Jian等. Switching Frequency Analysis of Modular Multilevel Converter Based on the Improved Capacitor Voltage Balancing Algorithm[J]. Transactions of China Electrotechnical Society, 2016, 31(13): 36-45.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I13/36

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