leak testing

Combined with the design of brushless DC electric motor controller, a method to estimate power loss of IGBT ( Insulated Gate Bipolar Transistor) based on PSPICE simulation is proposed.

结合无刷直流电机控制器的设计，提出了基于PSPICE仿真的绝缘栅双极型晶体管IGBT（Insulated Gate Bipolar Transistor）功率损耗的估算方法。

A power amplification of H-bridge bipolar PWM control is designed for controlling DC micro-motor of positive rotation, reverse rotation and speed regulation.

基于H型双极模式PWM控制原理，设计了一种直流微电机正反转调速功率放大电路。

By repairing the winding connection for the bipolar asynchronous motor, the connection of stator and rotor is analyzed in the paper, the correct winding connection method is chosen, the repairing quality is improved.

论述了对绕线型变极异步电动机的修理，分析定子、转子绕组的接法，选择正确的绕组并联支路数和极相组联接方式，提高检修质量。

Analysis on the Winding Connection for Winding Bipolar Motor

绕线型变极电动机绕组接法分析