Permanent Magnet Synchronous Motor  Favorite




The Permanent Magnet Synchronous motor is a rotating electric machine where the stator is a classic three-phase stator like that of an induction motor and the rotor has permanent magnets. In this respect, the PM synchronous motor is equivalent to an induction motor, except the rotor magnetic field in case of PMSM is produced by permanent magnets. The use of a permanent magnet to generate a substantial air gap magnetic flux makes it possible to design highly efficient PM motors.
  • Medium construction complexity, multiple fields, delicate magnets
  • High reliability (no brush wear), even at very high achievable speeds
  • High efficiency
  • Low EMI
  • Driven by multi-phase inverter controllers
  • Sensorless speed control possible
  • Higher total system cost than for DC motors
  • Smooth rotation without torque ripple
  • Appropriate for position control

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Freescale Permanent Magnet Synchronous Motor application block diagram

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Advantages
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