Apparatus for controlling rotary electric machine
First Claim
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.
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Abstract
In an apparatus, a first control unit performs current-feedback control, and a second control unit performs torque-feedback control. The torque-feedback control samples values of each output current at phases. The sampled values of each output current at the phases are referred to as phase-related sampled values of the corresponding output current. The apparatus causes the second control unit to sample values of each output current at the predetermined phases while the first control unit is performing the current-feedback control when switching the current-feedback control to the torque-feedback control. The second control unit uses the values of each output current sampled by the first control unit as the phase-related sampled values of the corresponding output current to start the torque-feedback control when the current-feedback control is switched to the torque-feedback control.
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Citations
9 Claims
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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:
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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 Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification