| 滞环电流控制SEPIC变换器中低频不稳定现象分析 |
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| 引用本文： | 刘芳,李岩,王福平.滞环电流控制SEPIC变换器中低频不稳定现象分析[J].兰州理工大学学报,2011(4):78-83. |
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| 作者姓名： | 刘芳 李岩 王福平 |
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| 作者单位： | 北方民族大学电气信息工程学院;宁夏电力公司电力科学研究院; |
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| 基金项目： | 宁夏自然科学基金(NZ0954); 宁夏高等学校科学研究基金(2010JY004) |
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| 摘 要： | 建立滞环电流控制SEPIC变换器的连续时间模型,采用解析及数值方法研究其中出现的低频不稳定现象.给出系统发生Hopf分岔的充要条件,确定系统参数的稳定区域,揭示系统中Hopf分岔现象产生、发展的机理.研究结果表明:系统中出现的低频不稳定现象是由Hopf分岔导致的,SEPIC变换器电路本质上的惯性特性是系统产生Hopf分...
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| 关 键 词： | 滞环控制 低频不稳定 单端初级电感变换器 霍普夫分岔 |
Low-frequency instability in hysteresis current-controlled SEPIC converter |
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| LIU Fang,LI Yan,WANG Fu-ping.Low-frequency instability in hysteresis current-controlled SEPIC converter[J].Journal of Lanzhou University of Technology,2011(4):78-83. |
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| Authors: | LIU Fang LI Yan WANG Fu-ping |
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| Institution: | LIU Fang1,LI Yan2,WANG Fu-ping1(1.College of Electrical and Information Engineering,North China University for Nationalities,Yinchuan 750021,China,2.Ningxia Electric Power Research Institute,Yinchuan 750002,China) |
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| Abstract: | A continuous-time model was developed for a hysteresis current-controlled SEPIC converter.The low-frequency instability in it was researched with analytical and numerical methods.The sufficient and necessary conditions for occurrence of Hopf bifurcation in the system were given,stable region of system parameters was determined,and the mechanism of occurrence and development of Hopf bifurcation phenomenon was revealed.It is shown by the investigation result that the low-frequency instability occurred in syst... |
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| Keywords: | hysteresis control low-frequency instability single-ended primary inductive converter Hopf bifurcation |
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