| 摘要 |
PROBLEM TO BE SOLVED: To restrict torque ripple caused by power source environment.SOLUTION: A motor control device comprises: a speed controller 10 that receives input of deviation of the actual rotation speed of a motor from a speed command and outputs a torque division current command; a notch filter 11 that receives input of center frequency, depth parameter and torque division current command and outputs correction torque division current command; a torque division current controller 13 that receives torque division current deviation and outputs a torque division voltage command; an excitation division current controller 21 that receives excitation division current deviation and outputs excitation division voltage command; a coordinate converter 18 that receives input of torque division voltage command, excitation division voltage command and motor rotation-angle and outputs a voltage command for the inverter 4; a ripple detector 15 that receives input of voltage output from a single-phase converter 2 and outputs ripple frequency and ripple amplitude; and a parameter arithmetic unit 14 that receives input of ripple amplitude and ripple frequency and outputs the depth of the notch filter 11 and the center frequency.SELECTED DRAWING: Figure 4 |
