In this study,a novel slot PM-assisted doubly-salient machine(SPMA-DSM)is proposed based on saturation assuaging.In this machine,DC current is adopted as the excitation source.The permanent magnets assembled in slots ...In this study,a novel slot PM-assisted doubly-salient machine(SPMA-DSM)is proposed based on saturation assuaging.In this machine,DC current is adopted as the excitation source.The permanent magnets assembled in slots are used to realize saturation assuaging,which can offer higher torque density and improved overload capability.Additionally,the torque density can be extended to wider scale before saturation.Multi-objective optimization based on differential evolution(DE)coupled with finite element method(FEM)is conducted to further improve the performance of the proposed machine.When compared to traditional flux-controllable machine,the PMAHEM exhibits the merits of:①higher torque density per PM volume,②lower torque ripple,and③wider flux controllable range.The simulation results indicate that the electromagnetic torque increases by more than 20%after the saturation assuaging design and optimization.展开更多
基金Supported by the National Natural Science Foundation of China under Project 52077187in part by the Research Grant Council of the Hong Kong Government under Project PolyU 152143/18E and PolyU 152109/20E.
文摘In this study,a novel slot PM-assisted doubly-salient machine(SPMA-DSM)is proposed based on saturation assuaging.In this machine,DC current is adopted as the excitation source.The permanent magnets assembled in slots are used to realize saturation assuaging,which can offer higher torque density and improved overload capability.Additionally,the torque density can be extended to wider scale before saturation.Multi-objective optimization based on differential evolution(DE)coupled with finite element method(FEM)is conducted to further improve the performance of the proposed machine.When compared to traditional flux-controllable machine,the PMAHEM exhibits the merits of:①higher torque density per PM volume,②lower torque ripple,and③wider flux controllable range.The simulation results indicate that the electromagnetic torque increases by more than 20%after the saturation assuaging design and optimization.
