Boost-Flyback单级PFC电路的原边控制策略

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Abstract This paper has analyzed the primary control method for a Boost-Flyback single stage power factor correction converter. Since the switch current contains both the input inductor current and flyback transformer current, the conventional primary control method for Flyback converter can not be applied. In this paper, two primary side control methods for Boost-Flyback single stage PFC converter are proposed and their control performance are also studied and compared. In order to achieve high power factor and high precision of output current, the parameters optimization methods are discussed in this paper based on different control methods, especially for the optimization of the inductance. The control method of variable frequency has a better performance on reducing the output ripple and increasing the PF.A prototype with 180~264V input and 32V/0.7A output is built to verify the analysis and the simulation.

Key words： Single stage PFC primary control constant current optimal design

Received: 08 August 2012 Published: 13 April 2015

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TM46

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	Articles by authors
	Zhang Yi
	Lin Zhengqi
	Zhang Junming
	Qian Zhaoming

Cite this article:

Zhang Yi,Lin Zhengqi,Zhang Junming等. A Primary Control Strategy for Boost-Flyback Single-Stage PFC Converter[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 155-160.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I4/155

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