Rotor Configuration Which Reduces Copper Loss of Switched Reluctance Motors with Suppression of Torque Ripple and Input Current Ripple
Rotor Configuration Which Reduces Copper Loss of Switched Reluctance Motors with Suppression of Torque Ripple and Input Current Ripple
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DOI：
10.1109/ecce.2018.8558173
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发表时间：
2018-09
期刊：
影响因子：
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通讯作者：
T. Kusumi;Takuto Hara;K. Umetani;E. Hiraki
中科院分区：
文献类型：
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作者：
T. Kusumi;Takuto Hara;K. Umetani;E. Hiraki
开关磁阻电动机（SRM）是电动汽车驱动的理想电机，因为它具有成本效益高和结构坚固等优点。然而，SRM遭受输入电流涟漪和转矩涟漪。提出了抑制输入电流涟漪和转矩涟漪的相电流波形的推导方法，并通过实验验证了对这两种脉动的抑制。然而，导出的相电流的均方根值远大于广泛实施的方波电流，并且增加了铜损耗。对于EV应用，应降低均方根值。为了突破这个问题，作者提出了相电流分布是基于每个磁阻分布而形成的特性，而每个磁阻分布是由电机配置形成的，并且注意到具有低均方根值的相电流分布可以通过新颖的转子配置来获得。因此，本文提出了一种新的转子结构，可以降低铜损。所提出的转子配置的设计，以满足磁阻的档案，这是由先前提出的相电流的推导方法。本文还介绍了降低铜损的评价实验。
Switched reluctance motors (SRMs) are attractive motors for electric vehicle propulsion because of their cost-effectiveness or robust structures. However, SRMs suffer from input current ripple and torque ripple. The authors have proposed derivation method of phase current profile which suppresses input current ripple and torque ripple and experimentally verified the suppression of both ripples. However, the rms value of derived phase current was much greater than square wave current, which is implemented widely, and increased copper loss. For the EV application, the rms value should be reduced. To break through the issue, the author addressed the characteristic that phase current profiles are shaped based on each reluctance profile, which is shaped by motor configuration, and noticed that phase current profile with low rms value may be derived by a novel rotor configuration. Therefore, this paper proposes a novel rotor configuration which can reduce the copper loss. The proposed rotor configuration is designed to satisfy the reluctance profile which is derived by previously proposed derivation method of phase current. This paper also presents the experiment for the evaluation of the reduction of copper loss.