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Control apparatus for AC rotary machine

  • US 9,954,472 B2
  • Filed: 11/08/2013
  • Issued: 04/24/2018
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. A control apparatus for an AC rotary machine that includes a first winding and a second winding and performs control operations on two rotary axes, comprising:

  • a current detection unit that detects a current of the first winding and a current of the second winding, respectively;

    a basic voltage calculation unit configured to calculate a basic voltage based on a current command value and an electric constant of the AC rotary machine;

    a first voltage calculation unit configured to calculate a first deviation between the current command value and the detected current of the first winding, to calculate a first voltage command value based on the first deviation, to calculate a second deviation between the current command value and the detected current of the second winding, to calculate a compensation voltage command value based on the second deviation, to calculate a compensated voltage command value by adding the compensation voltage command value to the first voltage command value, and to calculate a voltage command value of the first winding by adding the first voltage command value to the basic voltage;

    a second voltage calculation unit configured to calculate a second voltage command value based on the second deviation, and to calculate a voltage command value of the second winding by adding the second voltage command value to the basic voltage;

    a first voltage application unit configured to apply a voltage to the first winding in correspondence with the voltage command value of the first winding; and

    a second voltage application unit configured to apply the voltage to the second winding in correspondence with the voltage command value of the second winding.

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