WEPM series variable frequency variable speed permanent magnet synchronous motor is a super super high efficiency permanent magnet motor product, designed with rare earth permanent magnet material, and its efficiency meets IE4 (GB 1) level. It has higher efficiency and power density than induction motors, and the frame size of motors with the same power and torque output is smaller. The motor adopts a self-fan-cooled design, and can run at a variable speed driven by a frequency converter without forced ventilation. The installation dimensions of each frame size are consistent with those of induction motors, and comply with IEC and relevant national standards, which is convenient for customers to install and use.