To properly perform motor control at overmodulation.SOLUTION: In a motor control device 1, a carrier frequency adjusting unit 16 adjusts a carrier frequency fc so as to change a voltage phase error representing a phase difference between a three-phase voltage commands Vu*, Vv*, Vw * and a triangular wave signal Tr. When a modulation factor according to a voltage amplitude ratio between DC power supplied from a high voltage battery to an inverter and an AC power output from the inverter to a motor exceeds a predetermined value, e.g., 1.15, a current control unit 14 corrects an amplitude and a phase of a d-axis voltage command Vd* and a q-axis voltage command Vq* based on a carrier phase difference Δθcarr representing a phase of the triangular wave signal Tr.SELECTED DRAWING: Figure 2
【課題】過変調時におけるモータ制御を適切に実施する。【解決手段】モータ制御装置1において、搬送波周波数調整部16は、三相電圧指令Vu*、Vv*、Vw*と三角波信号Trの位相差を表す電圧位相誤差を変化させるように、搬送波周波数fcを調整する。電流制御部14は、高圧バッテリからインバータに供給される直流電力と、インバータからモータに出力される交流電力との電圧振幅比との電圧振幅比に応じた変調率が所定値、例えば1.15を超えたときに、三角波信号Trの位相を表す搬送波位相差Δθcarrに基づいてd軸電圧指令Vd*およびq軸電圧指令Vq*の振幅および位相を補正する。【選択図】図2
MOTOR CONTROL DEVICE, MECHATRONICS UNIT, ELECTRIC VEHICLE SYSTEM, MOTOR CONTROL METHOD
モータ制御装置、機電一体ユニット、電動車両システム、モータ制御方法
2021-10-28
Patent
Elektronische Ressource
Japanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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