大功率永磁直驱机车反电势的研究

Research on Back EMF of High Power Permanent Magnet Direct Drive Locomotive

以大功率永磁直驱机车反电势为研究对象,从永磁直驱电传动系统介绍入手,详细阐述了电机最大反电势产生、选取原则及反电势对整车电器件的影响,再详细分析反电势的应对措施并重点分析了电机侧隔离接触器的控制策略,并深入研究机车失控状况下电机反电势对整车电传动系统的影响。

In this paper,the back EMF of high-power permanent magnet direct-drive locomotive is taken as the research object.Starting from the introduction of permanent magnet direct drive electric drive system,the maximum back EMF generation,selection principle and the effect of back EMF on the electric vehicle components are elaborated.Analyze the countermeasures of back EMF and analyze the control strategy of the motor side isolation contactor,and deeply study the influence of the motor back EMF on the electric drive system of the whole vehicle when locomotive is in out-of-control status.