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Precision motor control with selective current waveform profiles in separate stator core segments

  • US 6,794,839 B1
  • Filed: 11/08/2002
  • Issued: 09/21/2004
  • Est. Priority Date: 11/08/2002
  • Status: Expired due to Fees
First Claim
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1. A control system for a multiphase motor operable over a range of speeds, said motor having a plurality of stator phase components and a rotor, each stator phase component comprising a phase winding formed on a core element, said system comprising:

  • energization circuitry connected to the stator phase windings for selective connection of each phase winding to a power source for energization thereof;

    a controller for generating control signals corresponding to a particular current waveform, said control signals applied to said energization circuitry for energization of said phase windings; and

    a memory having stored therein a plurality of selectable motor control schemes corresponding respectively to different current waveform profiles, said memory accessible by said controller for selection of one of said motor control schemes to produce said particular current waveform;

    wherein a selected one of said motor control schemes is implemented by said controller to provide to said stator phase windings energization current defined by the waveform profile corresponding to the selected motor control scheme for the entire operable motor speed range.

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