采用“三点频率”的设计方法,设计了开关电源双级LC 滤波器。对电流谐波进行理论分析和实验测量,二者结果吻合。滤波器抑制电磁干扰(EMI)效果良好。最后列出了理论计算值和实验数据。关键词:电磁干扰,滤波器,谐波分析,谐波抑制Abstract:Using the method of “three point frequency” designs switching-mode converters two-grade LC filters. Theoretical analysis and experimental measurement for current harmonics,the results are agreement. The filter restraining electromagnetic interference (EMI) is better. Finally,list the calculation results and experimental data.Key words:Electromagnetic interference ,Filters,Harmonics analysis,Harmonics restraining
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