| 摘要 |
A sensorless controlling apparatus and a sensorless controlling method of a vector inverter type motor are provided to reduce manufacturing cost without a conventional speed and position sensor by estimating a magnetic flux in a magnetic flux observer to estimate a speed from the magnetic flux. A sensorless controlling apparatus of a vector inverter type motor includes a current sensor, a speed controller(411), a current controller(412), a speed and position estimator, and a speed converter(415). The current sensor detects the stator current of the motor. The speed controller(411) outputs a current command for controlling a speed by inputting a speed command and an estimated rotating angle. The current controller(412) applies a voltage command to the motor by inputting the detected stator current, the current command, and the estimated speed value. The speed and position estimator estimates the speed and rotating angle values by inputting the voltage command and the stator current, and inputs the estimated values into the current controller(412). The speed converter(415) converts the estimated electric rotating angle to a mechanical rotating angle, and inputs the converted rotating angle into the speed controller(411). |
