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Motor control apparatus

專(zhuān)利號(hào)
US11177750B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION（KR Seoul）
發(fā)明人
Seung-Ki Sul; Yong-Cheol Kwon; Joohyun Lee
IPC分類(lèi)
H02P21/00; H02P21/22; H02P21/18; H02P21/20; H02P6/10; H02P6/18; H02P27/06
技術(shù)領(lǐng)域
isig,current,rotor,motor,signal,circumflex,tilde,command,torque,angular
地域： Seoul

摘要

A motor control apparatus according to one embodiment of the present invention comprises: a current controller for generating a voltage command signal on the basis of a torque command for driving a motor and a fundamental wave current of the motor; a high frequency voltage generator for generating a high frequency voltage signal for injection into the voltage command signal; an inverter for applying a voltage to the motor on the basis of the voltage command signal and the high frequency voltage signal; an angle estimator for generating an estimated angle of a rotor of the motor on an estimated coordinate system on the basis of a current signal of the motor; and a compensator for adding a first compensation signal (icomp) to the current signal (isig), wherein the first compensation signal (icomp) may be related to the torque command and the estimated angle.

說(shuō)明書(shū)

The high frequency voltage generator 120 may generate a high frequency voltage command (vdqsh{circumflex over (r)}*), which is added to the fundamental wave voltage command (vdqsf{circumflex over (r)}*), for sensorless control of the motor 101. The high frequency voltage command (vdqsh{circumflex over (r)}*) has a higher frequency than a driving frequency of the motor 101 driven by the fundamental wave voltage command output from the current controller 110.

The high frequency voltage generator 120 may generate the high frequency voltage command in an estimated d-axis on the estimated coordinate system. Namely, the injected high frequency voltage command (vdqsh{circumflex over (r)}*) may include only the estimated d-axis component. The fundamental wave voltage command (vdqsf{circumflex over (r)}*) and the high frequency voltage command (vdqsh{circumflex over (r)}*) may be added by an adder 10 and transmitted to the inverter 140.

In an embodiment of the present disclosure, the motor control apparatus 100 may further include a first coordinate converter 130 or a second coordinate converter 150.

權(quán)利要求

1
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