| 无源滤波器在开关电源设计中的应用 |
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| 引用本文： | 顾克东,车城剑,倪卫飞,吴志平. 无源滤波器在开关电源设计中的应用[J]. 城市轨道交通研究, 2008, 11(4): 56-59 |
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| 作者姓名： | 顾克东 车城剑 倪卫飞 吴志平 |
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| 作者单位： | 上海海立特种制冷设备有限公司,200090,上海;上海海立特种制冷设备有限公司,200090,上海;上海海立特种制冷设备有限公司,200090,上海;上海海立特种制冷设备有限公司,200090,上海 |
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| 摘 要： | 传导性电磁干扰是电气设备开关电源中的主要干扰源,所以电磁兼容性指标已经成为开关电源设计的重要参数。从开关电源的工作原理出发,对开关电源的电磁干扰机理进行分析,研究使用无源滤波技术减少电磁干扰。从实际应用角度对无源滤波器中电容、电感等元件的特性进行了分析,给出了实用电路和元件参数。无源滤波技术在轨道交通空调专用电源上的应用结果表明,使用无源滤波技术对电磁干扰有很好的抑制效果。
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| 关 键 词： | 开关电源 电磁干扰 无源滤波器 |
| 修稿时间： | 2007-11-22 |
Application of Passive Filters in Switching Power Supply Design |
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| Gu Kedong,Che Chengjian,Ni Weifei,Wu Zhiping. Application of Passive Filters in Switching Power Supply Design[J]. Urban Mass Transit, 2008, 11(4): 56-59 |
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| Authors: | Gu Kedong Che Chengjian Ni Weifei Wu Zhiping |
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| Abstract: | Because the conductive electromagnetic interference (EMI) of the switching power supply is the main EMI source in the electric device,the electromagnetic compatibility (EMC) has become one of the most critical factors in switching power supply. Firstly,the EMI of switching power supply is analyzed based on its principle,then the countermeasure with passive filters is presented to reduce EMI,and the property of filter elements(capacitors and inductors) is analyzed.Finally,the experimental results are presented,and the authors argue that the passive filter will help to reduce high frequency EMI in the switching power supply. |
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| Keywords: | switching power supply electromagnetic interforence passive filters |
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