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依据交流步进控制原理，采用新一代电力电子器件IGBT，设计了一种电流控制型的变频器，把同步电动机的速度控制和位置控制结合在一起。
According to the principle of AC stepper control, a new generation of power electronic device IGBT is designed and a current control inverter is designed, which combines the speed control and position control of synchronous motor.