交错并联Buck变换器的快速脉冲电流输出研究

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英文篇名：Research on Fast Pulse Current Output of Interleaving Buck Converter 作者：胡文伟 ; 冷敏瑞 ; 周国华 英文作者：HU Wen-wei;LENG Min-rui;ZHOU Guo-hua;Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education,Southwest Jiaotong University; 关键词：变换器 ; 脉冲宽度调制 ; 调光策略 ; 交错并联 英文关键词：converter;;pulse width modulation;;dimming strategy;;interleaving 中文刊名：DLDZ 英文刊名：Power Electronics 机构：磁浮技术与磁浮列车教育部重点实验室西南交通大学; 出版日期：2019-02-20 出版单位：电力电子技术 年：2019 期：v.53;No.315 基金：国家自然科学基金(61771405,61371033);; 成都市科技局项目(2016-HM01-00139-SF)~~ 语种：中文; 页：DLDZ201902033 页数：3 CN：02 ISSN：61-1124/TM 分类号：122-124

摘要

将脉冲宽度调制(PWM)调光策略与电荷控制四相交错并联Buck变换器相结合,可输出具有快速上升沿/下降沿的脉冲电流,适用于脉冲负载场合。分析了两种PWM调光策略(两电平调光和开关管调光)下变换器的工作原理,并通过实验结果对比分析了变换器采用这两种调光策略作为输出电流实现方式时瞬态性能的差异。实验结果表明,两电平调光策略下变换器的输出电流上升/下降过程平稳缓慢,开关管调光策略下变换器的输出电流上升/下降过程迅速,但上升沿有微小过冲。
        Pulse width modulation(PWM) dimming strategy and charge controlled interleaving Buck converter are combined to output pulse current with fast rising/descending edge which can be applied to pulse current sources.The operation principles of the converter employing two PWM dimming strategies(bilevel dimming strategy and switching dimming strategy) are analyzed.The transient performances of the converter employing the two dimming strategies are analyzed comparatively with experimental results.Experimental results show that the output current rises/descends stably and slowly when the converter employs bilevel dimming strategy and the output current rises/descends rapidly with small overshoot on the rising edge when the converter employs switching dimming strategy.

引文

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