A permanent magnet motor is a type of motor that uses permanent magnets to generate the magnetic field of the motor, with characteristics such as high power density, high control accuracy, and low noise. Its working principle mainly relies on the reluctance torque generated by the permanent magnet to control the operation of the motor. Compared with wound rotor motors, permanent magnet motors have the advantages of small size, light weight, and high power density, which can improve the efficiency and power factor of the motor.

There are various forms of permanent magnet motors, including rectangular pulse current, sine wave current, and hybrid permanent magnet motors. There are also various options for permanent magnet materials, such as rare earth samarium cobalt and neodymium iron boron. The characteristics of these materials are high energy density and good processing performance.

Permanent magnet motors are widely used in industry in various CNC machine tools, precision instruments and other equipment that require precise control of speed and torque. With the rapid development of microelectronics and power electronics technology, permanent magnet DC motors are moving towards high speed, high power density, and intelligence, and are widely used in some applications with particularly strict requirements for speed and torque.

Permanent magnet motors have the advantages of simple structure, high reliability, high efficiency, and long lifespan, making them a good energy-saving motor.