Title :
Irreversible magnet demagnetization analysis of IPM type BLDC motor by stator turn fault
Author :
Kim, Kyung-Tae ; Kim, Byeong-Woo ; Kang, Gyu-Hong
Author_Institution :
School of Electrical Eng., University of Ulsan, 102 Street Dae-hak, Nam-gu, Ulsan 680-749, Korea
Abstract :
A stator turn fault in a symmetrical three-phase machine cause a large circulating current to flow and subsequently generated excessive heat in shorted turns, generate irregular control current of the three phase leads to demagnetization. In this paper, the effect of the circulating current in shorted turns on the demagnetization of PM and motor performance is analyzed by using the proposed analysis method. The simulated results on the demagnetization of PM at inter-turn fault (μ = 16.7) verified by experiment.
Keywords :
brushless DC motors; demagnetisation; permanent magnet motors; IPM type BLDC motor; interior permanent magnet motor; interturn fault; irregular control current; irreversible magnet demagnetization analysis; stator turn fault; symmetrical three-phase machine; Analytical models; Circuit faults; Demagnetization; Magnetic flux; Stator windings; Torque; Irreversible demagnetization of PM; circulating current; stator turn fault;
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
DOI :
10.1109/IFOST.2012.6357695
