Research of the Variable Frequency Compressor Motor Based on Air Grooves of Rotor Yoke

In this paper, a method of setting up multiple air grooves in the yoke of the magnetic rotor is proposed, which improves the sinusoidal degree of the load magnetic field of the motor and reduces the main electromagnetic excited force wave of the motor. Aiming at the fluctuating load condition of variable frequency air conditioner, the problem that the vibration and noise of variable frequency compressor are worsened by the large amount of harmonic current introduced by the variable frequency air conditioner and the variable frequency controller is solved through the non-uniform design and optimization of odd air grooves.