Asymmetry V-shape rotor configuration of an interior permanent magnet machine for improving torque characteristics

This paper presents asymmetry V-shape rotor configuration to improve torque characteristics. Firstly, it is verified by FEA that IPM machine with the asymmetry V-shape rotor is better in torque characteristics. Then, the IPM model is optimized further using hybrid genetic algorithm-Taguchi (HGAT), and the best set of design parameters are found out. The prototype having HGAT design parameters is built to verify this design approach. The comparisons of the measured and simulated results demonstrate that this proposed rotor configuration is extremely effective and applicable to the reduction of cogging torque and torque ripple in IPM machines .