The present invention addresses the problem of appropriately implementing motor control during overmodulation. In a motor control device (1), a carrier frequency adjustment unit (16) adjusts a carrier frequency (fc) so as to change a voltage phase error ([delta] [theta] v) indicating a phase difference between three-phase voltage commands (Vu *, Vv *, Vw *) and a triangular wave signal (Tr). When the modulation rate (H) corresponding to the voltage amplitude ratio of the DC power supplied from the high-voltage battery to the inverter and the AC power output from the inverter to the motor exceeds a predetermined value, such as 1.15, the modulation rate (H) is determined to be smaller than 1.15. The current control unit (14) corrects the amplitudes and phases of the d-axis voltage command (Vd *) and the q-axis voltage command (Vq *) on the basis of a carrier phase difference ([delta] [theta] carr) indicating the phase of the triangular wave signal (Tr).
本发明的课题在于恰当地实施过调制时的马达控制。在本发明的马达控制装置(1)中,载波频率调整部(16)以改变表示三相电压指令(Vu*、Vv*、Vw*)与三角波信号(Tr)的相位差的电压相位误差(Δθv)的方式调整载波频率(fc)。在与从高压电池供给至逆变器的直流电力与从逆变器输出至马达的交流电力的电压振幅比的电压振幅比相应的调制率(H)超过了规定值例如1.15时,电流控制部(14)根据表示三角波信号(Tr)的相位的载波相位差(Δθcarr)来修正d轴电压指令(Vd*)及q轴电压指令(Vq*)的振幅及相位。
MOTOR CONTROL DEVICE, Mechatronic UNIT, ELECTRIC VEHICLE SYSTEM, AND MOTOR CONTROL METHOD
马达控制装置、机电一体单元、电动车辆系统、马达控制方法
2022-12-06
Patent
Electronic Resource
Chinese
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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