三相可控整流桥系统共模干扰研究

RESEARCH ON COMMON-MODE EMI IN THE THREE-PHASE CONTROLLED RECTIFIER

根据整流桥干扰产生的原理，计算了三相整流桥的共模干扰源，并结合按军标GJB152A-97建立的测试系统进行了分析，得到了计算共模干扰电流的等效电路。利用频域法对一个三相可控整流桥产生的共模干扰电流进行了计算，并与实验结果进行了比较，实验结果证实了计算的有效性。

The common-mode noise source of a three-phase controlled rectifier is modeled based on the principle of rectifier interference generating. Then the equivalent circuit is obtained from the measurement system which is set up according to the GJB152A-97. The common-mode interference current of a three-phase rectifier is calculated in frequency domain. The experiment results show the validity of the calculation.