基于混杂自动机的准谐振变换器建模及分析

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摘要准谐振变换器作为一个高阶、强耦合、多工作模态的非线性系统,其连续时间变量与离散状态量相互作用,因此是一个混杂系统。本文运用混杂系统相关理论建立了四阶准谐振变换器在连续工作模式下的混杂自动机模型,并根据其开关工作状态及输出电压稳定条件,设计了一种基于PI调节器的PFM控制策略。基于Matlab/Simulink的Stateflow工具包搭建了仿真平台,分析了在不同负载参数下系统的输出响应特性。最终通过仿真和实验验证了所提出的建模方法的有效性。

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	唐春森
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	李小飞

关键词 ：混杂自动机, 准谐振变换器, Matlab/Simulink, PI调节器

Abstract：Quasi-resonant converter(QRC) is a higher-order, tight-coupling and multi-operating- mode nonlinear system. And its continuous time variables mutually affect with discrete state variables, so it is a hybrid system. Utilizing hybrid system theory, a hybrid automata model is built for a fourth-order QRC operating under continuous currant mode(CCM). Based on the operating-state of switch and stable condition of output voltage, a PI based PFM control method is proposed. Both simulation and experiment results have verified the validation of the proposed method.

Key words： Hybrid automata quasi-resonant converter Matlab/Simulink proportional-integral(PI) controller

收稿日期: 2014-07-14 出版日期: 2015-05-25

PACS:

TM46

基金资助:重庆市基础与前沿研究计划（cstc2013jcyjA0235）和国家自然科学基金（51477020）资助项目

作者简介: 唐春森男,1980年生,博士,副教授,研究方向为无线电能传输技术与系统,电力电子系统建模及非线性行为分析与控制。沈昊男,1991年生,硕士,研究方向为无线电能传输技术与系统,电力电子系统建模及非线性行为分析与控制。

引用本文:

唐春森, 沈昊, 李小飞. 基于混杂自动机的准谐振变换器建模及分析[J]. 电工技术学报, 2015, 30(8): 120-126. Tang Chunsen, Shen Hao, Li Xiaofei. Modeling and Analyzing of Quasi-Resonant Converter Based on Hybrid Automata. Transactions of China Electrotechnical Society, 2015, 30(8): 120-126.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I8/120

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