The novel method for vibration reduction of IPM type BLDC motor

This paper is proposed the negative 3
^rd
harmonic elimination by air-gap flux density shape dispersion of interior type permanent magnet (IPM) motor for vibration minimization. For minimization of vibration, the optimal notches are put on the rotor pole face is applied. The variations of vibration computation by finite element method (FEM) and the validity of the analysis and rotor shape design are confirmed by vibration experiments.