笼型无刷双馈电机转子导条优化设计

针对笼型无刷双馈电机转子设计方法不完善的问题,从分析笼型无刷双馈电机的内部磁场入手,推导了无刷双馈电机在稳态运行时转子电流的解析表达式,利用迭代法在考虑转子电阻的情况下选择最合适的转子导条截面积,为笼型无刷双馈电机的转子设计提供了理论依据。通过有限元仿真,验证了理论推导的正确性。研究结果不仅有助于在设计时快速计算笼型无刷双馈电机转子电流,也有助于优化转子结构设计。

Optimization Design of Rotor Bars for Cage Brushless DoublyFed Motor

In view of the insufficient design method for rotor bars of cage rotor brushless doublyfed motor, the analytical expression for the rotor current calculation of cage rotor brushless doublyfed motors in steady state was derived starting from analyzing the internal magnetic field of cage rotor brushless doublyfed motor. The iterative method was used to select the most suitable crosssectional area of the rotor bar in consideration of the rotor resistance, which provided a theoretical basis for the rotor design of the cage rotor brushless doublyfed machine. Via finite element simulation, the theoretical derivation was validated. The research results not only help to quickly calculate the rotor current of cage rotor brushless doublyfed motor during design, but also help to optimize the rotor structure design.