矩阵变换器输入功率因数可调时的换流控制策略

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Abstract Voltage-controlled two-step commutation strategies of matrix converter have excellent characteristic such as fast commutation, low switching loss, hard to disturb and easy to control. But short circuit phenomenon will happen when the instantaneous value of two input phase voltages is adjacent. A kind of voltage-controlled commutation method using the intermediate intervals is proposed to solve short circuit in some literatures. This method is only used when input power factor is near to 1. Short circuit will inevitably happen when input power factor is adjustable. An advanced method applied to adjustable input power factor is proposed in this paper based on the commutation process analyzed. By measuring the instantaneous value of input voltages, changing high differential voltage to the middle of the modulation subsequence, the proposed method can avoid short circuit, ensure safe commutation and consummate voltage-controlled commutation strategies. Simulation and experimental results verify the validity and feasibility of the proposed commutation method.

Key words： Matrix converter voltage-controlled commutation two-step commutation intermediate interval changing subsequence method input power factor adjustable

Received: 11 May 2010 Published: 20 March 2014

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TM461

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	He Bi
	Qiao Mingzhong
	Lin Hua
	She Hongwu
	Wang Xingwei

Cite this article:

He Bi,Qiao Mingzhong,Lin Hua等. Commutation Strategies of Matrix Converter with Adjustable Input Power Factor[J]. Transactions of China Electrotechnical Society, 2012, 27(7): 191-197.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I7/191

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