开关DC/DC变换器的统一离散模型

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Abstract For describing the characteristics of system accurately and directing the design of control strategy for DC/DC converters, a unified discrete model of Boost converter is established based on both CCM and DCM. The state transferring matrix is adopted in the process. According to current state of the converter and the control strategy, a way is proposed to calculate the duration time of inductor current after the power switch is turned off in a working cycle. The criterion to identify the operation mode of a converter in the next working cycle is presented. The coefficient matrix of the proposed model is determined as well. The validity of the proposed unified discrete model is proved by experimental results.

Key words： Switching DC/DC converters Boost converters continuous inductive current mode discontinuous inductive current mode discrete model

Received: 14 November 2007 Published: 13 February 2014

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TM46

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	Articles by authors
	Leng Zhaoxia
	Liu Jian
	Liu Qingfeng
	Wang Huamin

Cite this article:

Leng Zhaoxia,Liu Jian,Liu Qingfeng等. A Unified Discrete Model of Switching DC/DC Converters[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 114-120.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I4/114

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作者简介: 冷朝霞女, 1976年生, 博士研究生, 讲师, 主要从事功率变换器的研究。刘健男, 1967年生, 博士, 教授, 博士生导师, 主要从事电气工程及其自动化方面的研究。