| 一种新颖的耦合电感MVS无源无损缓冲电路 |
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| 引用本文： | 何伟军,何礼高,伍健,薛应枫.一种新颖的耦合电感MVS无源无损缓冲电路[J].电力电子技术,2009,43(7). |
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| 作者姓名： | 何伟军 何礼高 伍健 薛应枫 |
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| 作者单位： | 南京航空航天大学,江苏,南京,210016 |
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| 摘 要： | 研究了一种适用于大功率Buck变换器的带耦合电感的最小电压应力(Minimun Voltage Stress,简称MVS)无源无损ZCS开通缓冲电路,它利用耦合电感的漏感与谐振电容在功率管开关过程中进行谐振,实现软开关。分析了变换器的工作模态,给出了软开关环节中耦合电感和谐振电容的参数设计方法,并搭建了150 W实验样机。实验结果表明,该结构实现了功率开关管ZCS开通和近似ZVS关断,抑制了功率二极管的反向恢复过程,减小了开关损耗,提高了变换器的效率。
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| 关 键 词： | 变换器/耦合电感 无源无损 零电流开关 |
A novel Minimun Voltage Stress Passive Lossless Snubber with Coupled-inductor |
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| HE Wei-jun,HE Li-gao,WU Jian,XUE Ying-feng.A novel Minimun Voltage Stress Passive Lossless Snubber with Coupled-inductor[J].Power Electronics,2009,43(7). |
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| Authors: | HE Wei-jun HE Li-gao WU Jian XUE Ying-feng |
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| Affiliation: | Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | This paper investigates a novel coupled-inductor passive lossless snubber circuit with minimun voltage stress(MVS)for high power Buck converters.In order to realize the soft-switching of insulated gate bipolar transistor(IGBT),the resonant process between the leakage inductance of coupled-inductor and resonant capacitors of snubber circuit is utilized while IGBT is switching.Operation mode is analyzed,parameters design procedure of coupled-inductor and resonant capac-itors are presented and a prototype is b... |
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| Keywords: | converter/couple-inductor passive lossless zero current switching |
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