| SUPPRESSING CONDUCTED EMI FROM A DC/DC HIGH POWER CONVERTER BASED ON MIXED-MODE FILTER |
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| 作者姓名： | 薛文彦 马西奎 |
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| 作者单位： | School of Electrical Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China |
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| 基金项目： | This work was supported by the National High-Tech Research and Development Program of China （“863” Program） （No. 2001AA411110） |
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| 摘 要： | Conducted electromagnetic interference （EMI） from a 7. 5kVA DC/DC high power converter is investigated to agree with EN class A. Here in some passive methods of suppressing conducted EM Noise, such as mixedmode （MM） EMI filters, snubbing circuits and other means, are used. Based on measurement, the sources of noise are detected with the characteristics analyzed in detail. The MM EMI filters is valuable means with which low-frequency part and some of the high frequency part of conducted EM Noise can be efficiently reduced. How to lay out the MM filters on both sides of the converter is outlined in detail. In addition, multiple grounding and RDC snubbing circuits are employed to improve the performance in high frequency. The experimental results confirm the methods adopted.
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| 关 键 词： | 信号处理 转换器 EMI 电磁法 滤波器 |
| 文章编号： | 1671-8267（2005）02-0113-04 |
SUPPRESSING CONDUCTED EMI FROM A DC/DC HIGH POWER CONVERTER BASED ON MIXED-MODE FILTER |
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| Xue Wenyan,Ma Xikui.SUPPRESSING CONDUCTED EMI FROM A DC/DC HIGH POWER CONVERTER BASED ON MIXED-MODE FILTER[J].Academic Journal of Xi’an Jiaotong University,2005,17(2):113-116,144. |
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| Authors: | Xue Wenyan Ma Xikui |
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| Abstract: | Conducted electromagnetic interference (EMI) from a 7.5kVA DC/DC high power converter is investigated to agree with EN class A. Here in some passive methods of suppressing conducted EM Noise, such as mixed-mode (MM) EMI filters, snubbing circuits and other means, are used. Based on measurement, the sources of noise are detected with the characteristics analyzed in detail. The MM EMI filters is valuable means with which low-frequency part and some of the high frequency part of conducted EM Noise can be efficiently reduced. How to lay out the MM filters on both sides of the converter is outlined in detail. In addition, multiple grounding and RDC snubbing circuits are employed to improve the performance in high frequency. The experimental results confirm the methods adopted. |
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| Keywords: | DC/DC converter conducted EMI electromagnetic compatibility filter design |
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