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Irreversible Demagnetization Fault Diagnosis of Permanent Magnet Synchronous Motor for Electric Vehicle

机译:电动汽车用永磁同步电动机不可逆退磁故障诊断

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Recently, researchers have an interest on the electric vehicle because it is more eco-friendly and efficient than gas vehicle. Instead of a gas engine, the electric vehicle has a motor for propulsion. The permanent magnet synchronous motor which has permanent magnet instead of field winding in the rotor has especially higher efficiency and torque per weight than other types of motor. When the irreversible demagnetization is occurred, users can be expose to high risk of accident by the fault operation of motor. Because of this, the irreversible demagnetization of permanent magnet should be detected by using any kinds of method to reduce the risk of accident. In this study, the demagnetization diagnosis method based on the result of locked rotor test is proposed. Base on short measurement time, the proposed diagnosis method aims to detect the demagnetization fault when the electric vehicle is at a complete standstill. The proposed method is verified by using the finite element analysis.
机译:最近,研究人员对电动汽车有兴趣,因为它比燃气车更环保和高效。而不是燃气发动机,电动车辆具有用于推进的电动机。具有永磁体的永磁同步电动机代替转子中的现场绕组的效率特别较高,而且重量比其他类型的电动机更高。当发生不可逆的退磁时,用户可以通过电动机的故障操作暴露于事故的高风险。因此,应通过使用任何类型的方法来检测永磁体的不可逆的退磁,以降低事故的风险。在本研究中,提出了基于锁定转子测试结果的去磁诊断方法。基于短测量时间,所提出的诊断方法旨在在电动车辆处于完全静止时检测去磁性故障。通过使用有限元分析来验证所提出的方法。

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