论文信息 - Optimal design of spoke type BLDC motor considering irreversible demagnetization of permanent magnet

Optimal design of spoke type BLDC motor considering irreversible demagnetization of permanent magnet

This paper presents a design strategy of spoke type BLDC motors considering an irreversible demagnetization of a permanent magnet (PM). So, the irreversible demagnetization characteristic of the motor is analyzed by rotor structure. The instantaneous currents in either starting or lock rotor condition, which are calculated from the current dynamic analysis, applied to the analysis of irreversible demagnetization field by FEM. In irreversible demagnetization analysis by FEM, the variation of residual flux density in PM is analyzed using the non-linearity of magnetic core on B-H plan. The analysis results are compared to several rotor structures and used for optimize the rotor structure.

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