| 利用混沌提高dc/dc变换器的EMC性能 |
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| 引用本文： | 汪剑鸣,许镇琳.利用混沌提高dc/dc变换器的EMC性能[J].电子科技大学学报(社会科学版),2004(5). |
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| 作者姓名： | 汪剑鸣 许镇琳 |
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| 作者单位： | 天津大学电气自动化工程学院 天津300072
(汪剑鸣)，天津大学电气自动化工程学院 天津300072(许镇琳) |
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| 摘 要： | 为了提高dc/dc变换电源的电磁兼容性,基于混沌现象的宽频谱特性提出了一种新的dc/dc变换器控制策略。首先推导了能够产生可控幅度混沌序列的Logistic映射形式,然后利用混沌序列对电流滞环控制策略的电流参考值进行扰动。从而扩展了电感电流的功率谱,降低了在开关频率及其谐波频率上发射的电磁干扰。仿真研究证明,该控制策略可以改善dc/dc变换器的电磁兼容性能。
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| 关 键 词： | dc/dc变换器 电力电子 混沌 电磁兼容 |
Improve EMC of dc/dc Converter by Chaos |
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| Wang Jianming,Xu Zhenlin.Improve EMC of dc/dc Converter by Chaos[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2004(5). |
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| Authors: | Wang Jianming Xu Zhenlin |
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| Abstract: | A dc/dc converter control scheme based on chaos is proposed, which can improves electromagnetic compatibility of dc/dc power supply. Firstly an expression of Logistic map is derived, which can generated chaotic sequences with controllable amplitudes. Then a chaotic sequence is applied to perturbs reference current parameter in hysteresis current control scheme. Power spectrum of inductance current is spread and electromagnetic interference on switching frequency and its harmonic frequency is reduced. Simulation results show that the new scheme can improve electromagnetic compatibility of the dc/dc converter. |
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| Keywords: | dc/dc converter power electronics chaos electromagnetic compatibility |
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