Design of Low Speed and High Torque External Rotor Permanent Magnet Synchronous Motor (PMSM) with Integer Slots

• DOI: 10.1109/asemd59061.2023.10369310
• Publication Date: 2024-01-09T20:10:21Z
• Authors: GuiHou Zhou; MingZhong Qiao; HouQuan Zhu; XiaoFeng Zhang; Jinhui Xie; Yong Dai
• Keywords: Synchronous motor; Torque density

In this paper, the design of an external rotor permanent magnet synchronous motor (ERPMSM) with integer slots at low speed and high torque is studied. Low PMSMs concentrated fractional slot (FSCW) are widely used for their efficiency, power density, simple winding form. More research attention has been paid to effects different pole combinations on pulsation, However, there little impact integral ERPMSM temperature rise vibration noise. This paper takes a 720kw 76.5RPM low-speed drum coal-mine belt conveyor as example. Firstly, influence forms performance was theoretically analyzed. Secondly, it calculated analyzed using finite element electromagnetic Fluid fields. Finally, through prototype manufacturing testing, verified that lower