Abstract

Analysis of overvoltages on the windings of synchronous motors caused by recharging of the insulation capacitances of motor stator windings connected with switching of valve currents has been carried out. The effect of a connecting cable line on the overvoltages of the motor is demonstrated. Formulas for determining the EMF phases of the network and the motor are presented. Expressions for determining bias EMF and zero-sequence EMF are examined. Oscillograms of variations in the current of the motor phases, the output voltage of the rectifier, and the insulation voltage of the motor are presented. Based on an analysis of the calculated quantities, conclusions are drawn and recommendations given for switching on the windings of a smoothing throttle.

中文翻译：

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用晶闸管变频器计算同步电动机绕组中的过电压

摘要

已经对由于与阀电流的切换相关的电动机定子绕组的绝缘电容的再充电所引起的同步电动机的绕组上的过电压进行了分析。演示了连接电缆线对电机过电压的影响。给出了确定网络和电动机的EMF相的公式。检查用于确定偏置EMF和零序EMF的表达式。给出了电动机相电流，整流器的输出电压和电动机绝缘电压变化的波形图。在对计算量进行分析的基础上，得出了一些结论并提出了一些建议，用于接通平滑节流阀的绕组。