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Traction motor systems of hybrid electric vehicles are vulnerable to uncontrolled generation (UCG) when the inverter switches loss their drive signals suddenly during flied weakening high speed operation. Then the large current is induced by UCG and charges the battery. The current will lead to the temperature rise of the battery and even break it down. Therefore, in order to avoid destruction risk...
The temperature-rise inside the magnets of interior permanent magnet synchronous motors (IPMSM) in a hybrid electric vehicle (HEV) caused by losses can lead to potential irreversible demagnetization. This paper presents an analytical model of online temperature prediction. Based on the relationship of the temperature and the magnets performance, the temperature of magnets is predicted through solving...
The eddy current loss in the magnets of permanent magnet (PM) motors in a hybrid electric vehicle (HEV) and plugin HEV is usually not taken into consideration in traditional motor design and analysis. However, due to the high conductivity of the rare-earth magnet, neodymium-iron-boron (NdFeB), and slot/tooth harmonics, there is eddy current loss generated inside the magnets. This loss may not attribute...
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