| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress vibration by a load torque and vibration by an output torque ripple by correcting current or voltage so as to reduce a difference between a load torque and an output torque in a present rotary phase by a pulsation torque pattern and a rotary position information. SOLUTION: A device is provided with a pulsation torque pattern memorizing means 6 memorized adding data of a current conversion value IL (θ) of pulsation of a pressure load torque per compressor rotating phase and a current conversion value Ima (θ) of pulsation compensation of a motor output torque. In a torque control unit 12, a value of the adding data in a present rotating phase θdetected by a position detecting means 5 is read out, a value which is constantly multiplied its value is outputted as a correction current value. Its correction value is added to an average output voltage command calculated in a speed control unit 8, is transferred to a PWM signal generating unit 11 as an instant current command value, and therein, a PWM signal is generated on the basis of the instant current command value and the rotating phase θ, and an inverter 1 is controlled. |
