An optimal flux switching permanent magnet machine for Toyota Prius hybrid electric vehicle

In this work, several topology structures and dimension parameters are investigated for a FSPMM with 12 stator poles to achieve minimal performance required by the drive system in the 2010 Toyota Prius hybrid electric vehicle (HEV). Four different pole numbers are proposed for the rotor part, namely 10, 11, 13 and 14. Form the discussion, it can be seen that the optimal rotor topology is the one with 13 poles, not the commonly investigated ones with 10 and 14 poles. The performance parameters of optimal 12/13 FSPMM are better than other types. In particular, the obtained optimal FSPMM can provide the highest torque and efficiency with the lowest torque ripple.