... motor,60v or 72v,working frequency is 0-200hz,max speed of 6500rpm,using Speed Sensorless Vector Control and SVP the motor is ... ac motor,voltage is 48v ,60v or 72v,working frequency is 0-200hz ... ,max speed of 6500rpm,using Speed Sensorless Vector Control and SVPWM (Space Vector Pulse Width Modulation ...