关键词: 横向磁通永磁电机, 齿槽转矩, 能量法, 连续不等齿距法

Abstract: The transverse flux permanent magnet motor exhibits significant cogging torque, leading to a noticeable torque ripple that adversely affects the motor's control accuracy. A continuous unequal tooth spacing method was proposed to mitigate the cogging torque of transverse flux permanent magnet motors. In this method, stator teeth were grouped along the circumference with an equal number of teeth in each group, and the adjacent tooth spacing within the same group formed an arithmetic sequence. This resulted in a phase shift of the cogging torque within each group, effectively reducing the overall cogging torque. By utilizing the energy method, a mathematical expression for the cogging torque of the transverse flux permanent magnet motor was derived which revealed how the continuous unequal tooth spacing method reduced cogging torque. The finite element method verified that the continuous unequal tooth spacing method can significantly reduce the cogging torque of transverse flux permanent magnet motors.

Key words: transverse flux permanent magnet motor, cogging torque, energy method, continuous unequal tooth spacing method