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    • 7. 发明授权
    • AC motor driving apparatus and method of controlling the same
    • 交流电动机驱动装置及其控制方法
    • US07271557B2
    • 2007-09-18
    • US11486151
    • 2006-07-14
    • Toshiyuki AjimaHideki MiyazakiYoshitaka IwajiTakao YanaiKinya Nakatsu
    • Toshiyuki AjimaHideki MiyazakiYoshitaka IwajiTakao YanaiKinya Nakatsu
    • H02P7/00
    • H02P6/18
    • The AC motor driving apparatus comprises an inverter for supplying power to an AC motor, current sensors for detecting current that flows in the motor or inverter, a rotation sensor for detecting the rotation of the rotor in the motor, and a control unit for controlling the driving of the inverter. A current detection value detected by the current sensor and a rotor rotational position are used to estimate three-phase motor current values. The estimated motor current values are used to control the inverter. Thereby, an inexpensive, space-saving AC motor driving apparatus as well as an AC motor controller, electric actuator, or vehicle that can perform highly precise torque control from zero speed to high-speed rotation without depending on the PWM pulse pattern are provided.
    • 交流电动机驱动装置包括用于向交流电动机供电的逆变器,用于检测在电动机或逆变器中流动的电流的电流传感器,用于检测电动机中的转子的旋转的旋转传感器,以及用于控制电动机的控制单元 驱动变频器。 使用由电流传感器检测的电流检测值和转子旋转位置来估计三相电动机电流值。 估计电机电流值用于控制变频器。 因此,提供了一种廉价的,节省空间的AC电动机驱动装置以及可以执行从零速到高速旋转的高精度转矩控制的交流电动机控制器,电动致动器或车辆,而不依赖于PWM脉冲模式。
    • 9. 发明授权
    • Motor drive apparatus, electric actuator and electric power steering apparatus
    • 电机驱动装置,电动执行器和电动助力转向装置
    • US07161323B2
    • 2007-01-09
    • US11158247
    • 2005-06-22
    • Toshiyuki AjimaHideki MiyazakiSatoru KanekoYuuichirou Takamune
    • Toshiyuki AjimaHideki MiyazakiSatoru KanekoYuuichirou Takamune
    • H02J1/02H02P27/00
    • H02P6/10B62D5/046B62D5/0463F16D65/18F16D2121/24H02M2001/0009H02P2209/07
    • The disclosure concerns a a motor drive apparatus, an electric actuator and an electric power steering apparatus capable of continuous torque control up to the high drive speed and high torque area, in order to enable quick acceleration and deceleration. A controller comprises a voltage saturation detecting apparatus for detecting the voltage saturation of the output voltage of an inverter circuit, based on the battery voltage, and a waveform controller that converts the drive waveform of the inverter circuit into the waveform created by superimposing harmonics of high odd-numbered order on a sinusoidal wave as a fundamental wave of the modulated wave modulated by a PWN carrier wave; and continuously changes the ratio of superimposing the high-order harmonics in response to the voltage saturation detected by a voltage saturation detecting means. This arrangement allows the controller to continuously change the drive waveform of the inverter circuit.
    • 本发明涉及一种电动机驱动装置,电动执行机构和电动助力转向装置,其能够连续转矩控制,直到高驱动速度和高扭矩区域,以便能够快速加速和减速。 控制器包括:电压饱和检测装置,用于基于电池电压检测逆变器电路的输出电压的电压饱和;以及波形控制器,其将逆变器电路的驱动波形转换成通过叠加高次谐波产生的波形 作为由PWN载波调制的调制波的基波的正弦波上的奇数次序; 并且响应于由电压饱和检测装置检测的电压饱和而连续地改变叠加高次谐波的比率。 这种布置允许控制器连续地改变逆变器电路的驱动波形。