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Speed sensorless motor control system and wind power generation system based on the current vector
Speed sensorless motor control system and wind power generation system based on the current vector
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机译：基于当前向量的无传感器电机控制系统和风力发电系统
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摘要
The present invention relates to a speed sensorless motor control system and a wind power generation system based on a current vector. The present invention provides a speed sensorless motor driving system, a current magnitude command value generator generating a magnitude command value of a stator current to be applied to the motor, and measuring at least two phase currents among 3-phase currents applied to a 3-phase AC motor a current measurement unit that calculates the magnitude and phase of the stator current vector based on the measured phase current, a current vector calculation unit that calculates the estimated angular velocity of the motor rotor based on information based on the phase of the stator current vector an estimator, a current controller for controlling the stator current of the motor based on the stator current magnitude command value and the magnitude of the stator current vector, and a voltage command value to be applied to the motor based on the current controller output and the phase of the stator current vector It provides a speed sensorless motor driving system, characterized in that it includes a voltage command calculation unit to generate. According to the present invention, there is an effect of estimating the rotor speed of the motor simply and accurately only by measuring the current applied to the motor without a sensor for the speed or position of the motor rotor.
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