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首页> 外文会议>2011 International Conference on Electrical Machines and Systems >Approaches to suppressing shaft voltage in brushless DC motor driven by PWM inverter
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Approaches to suppressing shaft voltage in brushless DC motor driven by PWM inverter

机译：PWM逆变器驱动的无刷直流电动机的轴压抑制方法

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This paper describes the shaft voltage reduction achieved by the brushless DC motor for air conditioning driven by the voltage source inverter. First, the simplified equivalent circuit of the concentrated winding brushless DC motor is derived based on the common mode equivalent circuit where stray capacitance is taken into account. Then, the electrostatic capacity distributions between winding and stator core, winding and magnet, stator core and magnet, and magnet capacitance are measured, and the shaft voltage is calculated with the simplified equivalent circuit. Finally, the bridge type equivalent circuit is derived, and it is confirmed with calculation and experiment that the shaft voltage can be suppressed when the inside and outside of the rotor core are insulated with resin (hereinafter, the insulated rotor).
机译：本文介绍了由电压源逆变器驱动的空调用无刷直流电动机所实现的轴电压降低。首先，基于考虑了杂散电容的共模等效电路，得出集中绕组无刷直流电动机的简化等效电路。然后，测量绕组与定子铁芯，绕组与磁体，定子铁芯与磁体之间的静电电容分布以及磁体电容，并用简化的等效电路计算出轴电压。最后，导出桥式等效电路，通过计算和实验确认，当转子芯的内部和外部被树脂绝缘时（在下文中，绝缘转子），可以抑制轴电压。

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