To achieve an apparatus for control of a motor drive device, capable of properly completing stronger field control in a configuration for executing stronger field control and square wave control, based on a voltage index of a modulation factor, or the like.
A voltage waveform control unit 10 executes PWM control when the voltage index M indicating voltage command values Vd, Vq to a DC voltage Vdc is less than a prescribed square wave threshold, and executes square wave control when the voltage index M is not less than the square wave threshold. A field adjustment unit 8 executes stronger field control on the condition that the voltage index M becomes not less than a prescribed stronger field threshold smaller than the square wave threshold. A mode control unit 5 completes stronger field control by the field adjustment unit 8 on the condition that a field adjustment command value ΔId becomes not less than an adjustment command threshold value ΔIdT decided based on target torque TM and a voltage speed ratio RVω in a direction for strengthening a field magnetic flux.
| JP2017123759 | VEHICLE |
| JP2014515244 | Methods and systems for controlling electric motors with temperature compensation |
| JPH07298698 | CONTROLLER FOR INDUCTION MOTOR |
SAHA SUBURATA
IWATSUKI TAKESHI
| JP2007259538A | 2007-10-04 | |||
| JP2006081287A | 2006-03-23 | |||
| JP2008079399A | 2008-04-03 | |||
| JP2006311770A | 2006-11-09 |
Kunihiko Higashi
Ichiro Miyake
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