Shin-Etsu Rare Earth Magnets

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Permanent magnet synchronous motors

This is a rotating magnetic field motor with a structure that combines permanent magnets with silicon steel sheets, iron, or the like as the rotor and on the other hand winds the armature on silicon steel sheets or iron as the stator. Since the motor rotation rate varies with the frequency of the field magnetic current flowing in the stator, the operation of the motor itself can be controlled with a DC inverter power supply. Because it is easy to electrically control the rotation rate, response speed, etc., this type of motor is used over a wide range as high-performance actuators for a variety of industrial motors. Two types can be roughly distinguished, the surface permanent magnet motor (SPM motor) that pastes permanent magnets on the rotor surface and the interior permanent magnet motor (IPM motor) that embeds permanent magnets within the rotor.

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Glossary list