| 摘要 |
PURPOSE:To obtain an excellent vibration suppression effect by a method wherein a torque command generating means which generates a torque command supplied to a torque control inverter in accordance with a predetermined speed command, a revolution detected by a revolution detecting means and a torque compensation command is provided. CONSTITUTION:A rectifying/smoothing part 2 which rectifies and smoothes an AC voltage supplied from an AC power supply 1 and converts it into a DC voltage and a torque control inverter 3 which converts the DC voltage into an AC voltage with pulse width modulation control and applies it to the motor 4b of a rotary compressor 4a are provided. Further, a rotation position detecting part 5 which detects the rotation position of the rotary compressor 4a and a revolution detecting part 6 which detects a revolution in accordance with a rotation position detection signal are provided. A torque pattern output part 7 which holds a predetermined torque pattern and outputs a compensation torque in accordance with the detected rotation position and a torque command generating part 8 which generates a torque command supplied to the torque control inverter 3 in accordance with a predetermined speed command, the detected revolution and the compensation torque are also provided. |
