×

Apparatus for controlling rotary electric machine

  • US 9,543,868 B2
  • Filed: 06/01/2016
  • Issued: 01/10/2017
  • Est. Priority Date: 06/01/2015
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus for adjusting an output voltage from an inverter to a rotary electric machine to control the rotary electric machine, the apparatus comprising:

  • a first control unit configured to perform a current-feedback control routine, the current-feedback control routine being configured to;

    set a sinusoidal voltage command based on command torque for output torque of the rotary electric machine and the output currents; and

    compare the sinusoidal voltage command with a periodic carrier signal to control the output voltage accordingly;

    a second control unit configured to perform a torque-feedback control routine, the torque-feedback control routine being configured to;

    sample values of each of the output currents at predetermined phases, the sampled values of each of the output currents at the predetermined phases being referred to as phase-related sampled values of the corresponding output current;

    control, based on the phase-related sampled values of each of the output currents and the command torque, a waveform of the output voltage; and

    a switching control unit configured to;

    switch control of the rotary electric machine between the current-feedback control routine and the torque-feedback control routine; and

    cause the second control unit to sample values of each of the output currents at the predetermined phases while the first control unit is performing the current-feedback control routine when switching the current-feedback control routine to the torque-feedback control routine,the second control unit being configured to use the values of each of the output currents sampled while the first control unit is performing the current-feedback control routine as the phase-related sampled values of the corresponding output current to start the torque-feedback control routine when the current-feedback control routine is switched to the torque-feedback control routine.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×