Abstract
In this paper, utilizing the cogging effect caused by the slotting of the rotor of a multiphase induction motor and its modulation effect on the air gap magnetic field, one or more detection coils are embedded in the stator windings of the motor to detect the rotor slot harmonics (RSH) in the air gap magnetic field. The induction voltage of corresponding frequency is generated inside the detection coil, and then the speed-sensorless speed estimation of the induction motor can be realized. Based on the analysis of the main characteristics of the rotor slot harmonics of a multiphase induction motor, the goal is to improve the signal-to-noise ratio(SNR) of the rotor slot harmonics, taking into account the convenience of detecting coil layout. And verified by finite element simulation. The result proves that this scheme has certain practical value for the speed-sensorless speed estimation of the multiphase induction motor.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
