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Multigroup, multiphase driving system and driving method for rotary electric machine

  • US 9,755,560 B2
  • Filed: 05/27/2015
  • Issued: 09/05/2017
  • Est. Priority Date: 05/30/2014
  • Status: Active Grant
First Claim
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1. A multigroup, multiphase driving system comprising:

  • a power converter that converts direct current power into alternating current power and vice versa;

    a direct current power supply connected to a direct current side of the power converter so as to be charged with and discharge direct current power;

    a rotary electric machine that is connected to an alternating current side of the power converter and includes a plurality of groups of multiphase armature windings; and

    a determination unit that determines a number of groups to be used to drive the rotary electric machine on the basis of a rotation speed of the rotary electric machine, a current flowing through the rotary electric machine, a direct current power supply voltage of the direct current power supply, and a carrier frequency of the power converter.

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