A Design Scheme of Low-Speed High-Torque Permanent Magnet Synchronous Motor
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摘要: 针对大型无人水下航行器低速大扭矩推进电机减振降噪应用需求, 设计了一款额定功率100 kW、额定转速250 r/min的低速大扭矩永磁同步电机。首先基于磁路法完成电机电磁方案设计, 建立电机分段斜槽有限元模型, 开展空载反电势、齿槽转矩、电磁转矩等参数的仿真分析, 最后完成样机的研制与试验。试验结果表明文中的低速大扭矩永磁同步电机设计方案切实可行。Abstract: This study focuses on the requirement of reducing vibration and noise in low-speed, high-torque propulsion motors used by large unmanned undersea vehicles(UUVs). Furthermore, a low-speed high-torque permanent magnet synchronous motor with a rated power of 100 kW and a rated speed of 250 r/min is designed. First, a motor electromagnetic scheme is designed based on the magnetic circuit method. Subsequently, the finite element model of the motor’s segmented skewed slot is established, and the no-load back electromagnetic force, cogging torque, electromagnetic torque, and other parameters are analyzed. Finally, the prototype is developed and tested. Test results indicate the feasibility of the design scheme for achieving a low-speed, high-torque, permanent magnet synchronous motor.
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