Title :
Control of BLDC motor in presence of static rotor eccentricity
Author :
Shakouhi, Seyed Mohammad ; Mohamadian, Mustafa ; Afjei, S.E.
Author_Institution :
Tarbiat Modares Univ., Tehran, Iran
Abstract :
BLDC motors are one of the motor types rapidly gaining popularity. In recent years various researches have been done in the field of motor fault detection and fault tolerant control. However, in the case of rotor problems, especially rotor eccentricity tolerant control a few papers have been presented. Since in sensitive industries, continuous operation with good performance till the maintenance time is very important, operating in the desired condition in presence of this kind of fault is really advantageous. But conventional control methods in presence of eccentricity fault are inefficient. Because they generate phase currents with the same amplitudes and equality of currents and inequality of back-EMFs and phase inductance changes due to eccentricity, leads to intensive torque ripples. So, a new control strategy which can improve motor performance is desirable. In this paper an on-line control method based on Back-EMF estimation is proposed which can increase quality of operation by eliminating load torque pulsation considering rotor eccentricity.
Keywords :
brushless DC motors; fault tolerance; machine control; maintenance engineering; rotors; BLDC motor control; back-EMF estimation; fault tolerant control; intensive torque ripples; load torque pulsation elimination; maintenance time; motor fault detection; motor performance; online control method; phase currents; phase inductance changes; static rotor eccentricity; Back-EMF Estimation; Phase Inductance estimation; Rotor Eccentricity; Torque Pulsation;
Conference_Titel :
Electrical Machines and Power Electronics and 2011 Electromotion Joint Conference (ACEMP), 2011 International Aegean Conference on
Conference_Location :
Istanbul
Print_ISBN :
978-1-4673-5004-4
Electronic_ISBN :
978-1-4673-5002-0
DOI :
10.1109/ACEMP.2011.6490566