To improve the driving torque and increase the inner space utilization rate of wheel hub motor on electric motorcycle, a double-stator permanent magnet motor was reported in this paper.
为充分利用电动摩托车轮毂电机内部空间，提高电机的驱动转矩，该文设计了一款双定子结构的永磁电动机。
2
It use the cylinder to control the moving of plane magnet, easy to operate, low breakdown rate.
采用气缸控制平面磁体移动，操作简单，故障率低。
3
The calculation shows that the pressure drops and the temperature decreases, but the gas rate increases from liquid helium main dewar to superconducting magnet dewar.