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Three-Phase AC Induction

Three-phase induction motors are brushless motors. The stator is copper wound and the rotor is typically an aluminum squirrel cage. The typical drive configuration is a three phase bridge (3 half bridges) modulated to provide three sine wave voltages to the stator. Typically used in higher power applications, the drive can be composed by discrete MOS or IGBT with high voltage gate drivers or by power modules integrating  three half bridges and related gate driving stage.  Field Oriented Control or Scalar (Volts / Hertz) control algorithms are implemented in the microcontroller that controls the inverter.

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