Abstract: With people's requirements for living comfort, the noise level of household air conditioner is becoming an important reference index for consumers when buy. As the power source of air conditioner, the compressor is the main source of noise, but the effective analytical method of noise vibration caused by motor was lacking. With the causes of the motor electromagnetic force was deduced, the motor electromagnetic force density was simulated and analyzed through the Maxwell. The effectiveness of the force density optimization was verified through the compressor noise spectrum, and then the correctness of the analysis method of vibration and noise was verified. And an effective simulation and calculation method was provided for the noise analysis and optimization of air conditioning compressor.

Key words: Compressor, Noise, Motor, Frequency conversion