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VIRTUAL VOLTAGE INJECTION-BASED SPEED SENSOR-LESS DRIVING CONTROL METHOD FOR INDUCTION MOTOR
VIRTUAL VOLTAGE INJECTION-BASED SPEED SENSOR-LESS DRIVING CONTROL METHOD FOR INDUCTION MOTOR
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机译:基于虚拟电压喷射的速度传感器的感应电动机驱动控制方法
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摘要
A virtual voltage injection-based speed sensor-less driving control method for an induction motor is provided. First, a virtual voltage signal is injected into a motor flux linkage and rotating speed observer so that there is a difference between an input of the motor flux linkage and rotating speed observer and a command input of the motor. Then, based on any type of the motor flux linkage and rotating speed observer, a motor flux linkage rotation angle and a motor rotor speed are estimated, and the induction motor is driven to run normally with a certain control strategy (such as vector control). Then, based on a signal designed according to this method and injected only into the motor flux linkage and rotating speed observer, the induction motor driven by a speed sensor-less control system for the induction motor may be ensured to output 150% of a rated torque when running at a motor low synchronous rotating speed and a motor zero synchronous rotating speed, and the stability thereof may be kept for a long time.
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