OSCILLATION REDUCTIVE METHOD OF COMPRESSOR BASED ON A FREQUENCY ANALYSIS WITH SPEED RIPPLE AND APPARATUS THEREOF

摘要

PURPOSE: A method and an apparatus for reducing vibration of a compressor based on frequency analysis for speed are provided to conveniently reduce vibration of a compressor and to operate the compressor at a low speed area to enable control of a fixed temperature. CONSTITUTION: A method and an apparatus for reducing vibration of a compressor based on frequency analysis for speed comprises a vibration reduction operating unit(150), a torque command generator(160) corresponding to vibration, a speed controller(170), and a torque controller(190). The vibration reduction operating unit implements frequency analysis aimed at speed values of a compressor for each time. In case of increasing speed ripple of a specific time, torque is controlled to reduce the relevant speed ripple. The torque command generator generates torque commands according to torque adjusted values. The speed controller generates speed commands for operating the compressor. The torque controller implements inverter control for driving a motor by using values in which the torque commands are added to the speed commands.