セグメント構造巻線界磁形フラックススイッチングモータにおける高出力化に適した極数の検討

抄録

  Investigation on rotor pole numbers of Wound Field Flux Switching Motors (WFFSMs) with segmental rotors in existing papers has been restricted to a comparison of torque-current characteristics. This paper investigates the number of rotor poles necessary to achieve a high power density in WFFSMs with segmental rotors. Pole numbers were varied from 5 to 8. The performances of motors with different pole numbers were compared by finite element analysis (FEA). Odd numbers of rotor poles not only effectively eliminated the even harmonics of back-EMF but also expanded the speed range of WFFSMs with a segmental rotor drive. It is also revealed that the 5-rotor pole is suitable for higher power.