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    • 8. 发明授权
    • Motor control apparatus and method
    • 电机控制装置及方法
    • US06771039B2
    • 2004-08-03
    • US10329438
    • 2002-12-27
    • Yoshimi SakuraiYoshitaka IwajiRyoso Masaki
    • Yoshimi SakuraiYoshitaka IwajiRyoso Masaki
    • H02P146
    • H02P6/18H02P21/18H02P21/24
    • A motor control apparatus includes an inverter for applying voltage to a synchronous motor and a control apparatus 4 for calculating a voltage instruction value to be applied by a PWM signal. There are provided a current difference sensing unit of the synchronous motor, a current difference calculation unit for calculating a current change attributed to the voltage applied, and a position sensing unit for estimating a counter electromotive force direction according to the current change sensed by the current change sensing unit and the current change calculated by the current difference calculation unit. The magnetic pole position of the rotor of the synchronous motor is estimated according to the counter electromotive force direction estimated by the position sensing unit and the voltage applied to the synchronous motor is controlled according to the estimated magnetic pole position.
    • 电动机控制装置包括用于向同步电动机施加电压的逆变器和用于计算要由PWM信号施加的电压指令值的控制装置4。 提供同步电动机的电流差检测单元,用于计算归因于所施加的电压的电流变化的电流差计算单元和用于根据由电流感测的电流变化估计反电动势方向的位置感测单元 改变感测单元和由电流差计算单元计算的电流变化。 根据由位置检测部估计出的反电动势方向估计同步电动机的转子的磁极位置,并且根据估计的磁极位置来控制施加到同步电动机的电压。
    • 10. 发明授权
    • Motor control device
    • 电机控制装置
    • US06555988B2
    • 2003-04-29
    • US09726595
    • 2000-12-01
    • Ryoso MasakiSatoru KanekoSanshiro ObaraMitsuyuki HombuYoshimi Sakurai
    • Ryoso MasakiSatoru KanekoSanshiro ObaraMitsuyuki HombuYoshimi Sakurai
    • H02P618
    • H02P6/182H02P6/18H02P25/089
    • In an arrangement having an electric power inverter 2 which applies a voltage to an AC motor 1 and a control unit 4 which calculates a voltage command value applied in PWM signals, detection use voltages Vup, Vvp and Vwp are applied in synchronism with PWM signal generation use carrier waves in the control unit 4 as well as motor currents iv and iv are detected in response to current detection pulses Pd in synchronism therewith. In a magnetic pole position detection unit 12, counter electromotive forces of the synchronous motor 1 are estimated from a relationship between the detection use voltages Vup, Vvp and Vwp and current difference vectors of the motor current to determine a magnetic pole position &thgr; through calculation. The determined magnetic pole position &thgr; is inputted to coordinate conversion units 8 and 11 and a motor speed detection unit 13. Thereby, a motor control device having a control characteristic of a good response property with no magnetic pole position sensor is provided for a control system of a synchronous motor.
    • 在具有向交流电动机1施加电压的电力逆变器2和计算施加在PWM信号中的电压指令值的控制单元4的布置中,与PWM信号生成同步地施加检测用电压Vup,Vvp和Vwp 响应于与其同步的电流检测脉冲Pd,检测控制单元4中的载波以及电动机电流iv和iv。 在磁极位置检测单元12中,根据检测用电压Vup,Vvp和Vwp之间的关系以及电动机电流的电流差矢量来估计同步电动机1的反电动势,以通过计算来确定磁极位置θ。 将确定的磁极位置θ输入到坐标转换单元8和11以及电动机速度检测单元13.由此,提供具有无磁极位置传感器的良好响应特性的控制特性的电动机控制装置用于控制系统 的同步电机。