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Research on Suppressing Electromagnetic Interference Level of Buck dc/dc Converter by Using Chaotic Modulation Technology
Author(s): 
Pages: 23-27
Year: Issue:  6
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  开关电源随机开关混沌调制电磁干扰电磁兼容;
Abstract: 随机开关调制技术可以降低开关模式电源电磁干扰(EMI)水平.混沌信号具有内在的随机性.本文将著名"蔡氏电路"产生的混沌信号经处理后,用于Buck型变换器开关的调制控制,使其工作在基于混沌的随机模式.通过对四种调制模式下变换器输入电流与周期PWM模式下输入电流频谱的分析比较表明,混沌调制技术在扩展频谱方面有良好的效果,可以用于降低开关模式电源的电磁干扰水平,改善电磁兼容性(EMC).
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