Shin-Etsu Rare Earth Magnets

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IPM motors (Interior Permanent Magnet Motors)

These are synchronous motors with rotating magnetic fields that have magnets embedded in the rotor. These motors can use both the torque due to magnet magnetization and the reluctance torque due to the rotor magnetization. Since the magnets are embedded in a rotor made from silicon steel plates or the like, the centrifugal force during motor rotation does not make the magnets fly out and the mechanical stability is high. It is possible to control the current phase to run with high torque or over a wide range of speeds, so these motors are energy saving, high efficiency, and high torque. In recent years, use has been expanding rapidly in electric vehicles, hybrid vehicles, high-performance air conditioners, large industrial motors, train motors, etc.

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Glossary list