Conference Year



rotary compressor, noise analysis, motor analysis, coupled approach


This research is conducted to investigate noise source and design low noise compressors. For improving energy efficiency, the rotary compressor with variable speed brushless DC motor is increasingly adopted for appliances. However brushless DC motor makes more compressor vibration than constant speed motor compressor at high speed operating condition. Therefore it is necessary to reduce noise and vibration for improving air conditioner quality. In this study, compressor’s noise and vibration are simulated using structural and electromagnetics coupled methods. To simulate the actual motor movements, precession motion of rotor is applied for simulation