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Magnetization analysis of the brushless DC motor used for hybrid electric vehicle

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4 Author(s)
Ping Zheng ; Harbin Inst. of Technol., China ; Yong Liu ; Yan Wang ; Shukang Cheng

Component magnetization and post-assembly magnetization are compared for the brushless dc motors used for hybrid electric vehicles through theoretical analysis, finite-element method (FEM) calculation, and experiment. Provided with enough magnetizing magnetomotive force (MMF), the permanent magnets can be fully magnetized both by component magnetization and post-assembly magnetization. The tested rotor surface flux densities of the component magnetization and post-assembly magnetization are consistent, and they are in good agreement with the FEM calculated values. By contrast, we prefer the post-assembly magnetization in order to overcome the problem of magnetic forces and ferrous debris during the assembly process.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 1 )