Compound Shaded-pole Motor Torsional Vibration Detection and Analysis
ZHOU Feng1,ZHAO Hao2
1. College of Information Engineering, Jiaxing Nanhu University, Jiaxing, Zhejiang 314001,China
2. College of Information Science and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China
Abstract A compound shaded-pole motor is designed, which has double-stator and double-rotor structure. When the motor is running, the stator winding are excited in order to generated the rotating magnetic field,which can drives the rotor to rotate. The characteristics of air gap magnetic field are analyzed, the electromagnetic torque formula of the motor is derived, which indicates that torsional vibration exists during the motor operation. A corresponding prototype is developed, and the torsional vibration of the motor under different excitation states are detected by the sensor. The results show that the torsional vibration amplitude of the motor changed with the phase difference of the two-phase excitation voltage. Finally, the change law is analyzed theoretically, the result is that the torsional vibration wave phase difference is twice of the excitation voltage.
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2021, Vol. 42 
