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Boost ZVS PWM变换器混沌现象研究
引用本文:潘如政,孙广生,严萍,潘春伟,段大鹏.Boost ZVS PWM变换器混沌现象研究[J].电工技术学报,2007,22(5):78-83.
作者姓名:潘如政  孙广生  严萍  潘春伟  段大鹏
作者单位:1. 中国科学院电工研究所,北京,100080;中国科学院研究生院,北京,100049
2. 中国科学院电工研究所,北京,100080
3. 山东建筑大学信息与电气工程学院,济南,250101
4. 上海交通大学电子信息与电气工程学院,上海,200240
摘    要:为了研究软开关功率变换器中的混沌现象,以Boost ZVS PWM变换器为研究对象建立了精确离散数学模型,并基于此模型得到Boost ZVS PWM变换器的分岔图,通过仿真电压、电流及相平面图证明了分岔图与变换器运行状态基本一致,利用曲线拟合的方法划分出变换器的稳定区域,得到稳定区域随负载变化的趋势.本文建立的精确离散数学模型建立在数学通用公式基础上,可以应用于其他软开关DC/DC变换器混沌现象的研究.

关 键 词:混沌  软开关  DC/DC变换器  离散数学模型
修稿时间:2006年7月18日

Chaos Study of Boost ZVS PWM Converter
Pan Ruzheng,Sun Guangsheng,Yan Ping,Pan Chunwei,Duan Dapeng.Chaos Study of Boost ZVS PWM Converter[J].Transactions of China Electrotechnical Society,2007,22(5):78-83.
Authors:Pan Ruzheng  Sun Guangsheng  Yan Ping  Pan Chunwei  Duan Dapeng
Affiliation:1. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100080 China 2. Graduate School of Chinese Academy of Sciences Beijing 100049 China 3. Shandong Jianzhu University Ji'nan 250101 China 4. Shanghai Jiaotong University Shanghai 200240 China
Abstract:In order to study the chaos of soft-switching converters, Boost zero-voltage-switching pulse-wide-modulation(ZVS PWM)converter is chosen as the object of study, and the precise discrete mathematic model of the converter is set up in the paper. Based on the model, bifurcation figure of the converter is obtained. It is proved that bifurcation figure is nearly consistent with the status of converter through simulation of voltage, current and phase portrait in the paper. The steady area of the converter is plotted out with curve fitting method, and the trend of steady area with load variation is obtained. The model in this paper is based on the general formula, therefore, it can be applied to the chaos study of other soft-switching DC/DC converters.
Keywords:Chaos  soft-switching  DC/DC converter  discrete mathematic model
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