DocumentCode :
1927926
Title :
Interior permanent magnet synchronous machine rotor demagnetization characteristics under fault conditions
Author :
Gilsu Choi ; Jahns, Thomas M.
Author_Institution :
Wisconsin Electr. Machines & Power Electron. Consortium (WEMPEC), Univ. of Wisconsin - Madison, Madison, WI, USA
fYear :
2013
fDate :
15-19 Sept. 2013
Firstpage :
2500
Lastpage :
2507
Abstract :
This paper presents the dynamic response of an interior permanent magnet synchronous machine (IPMSM) drive to various fault conditions and their effects on the PM demagnetization characteristics. Attention is focused on modeling the IPMSM drive including nonlinear magnetic behavior under asymmetrical inverter fault conditions, demonstrating the significant risks of irreversible demagnetization caused by the large transient fault currents. Other types of inverter faults are discussed, including phase-leg open-circuit fault and uncontrolled generator (UCG) mode fault. Finite element (FE) analysis is used to simulate the demagnetization characteristics under a variety of fault conditions. Three-phase symmetrical short circuit fault characteristics for several different IPM machine designs are discussed.
Keywords :
demagnetisation; drives; fault currents; finite element analysis; invertors; permanent magnet machines; rotors; synchronous machines; IPM machine designs; asymmetrical inverter fault conditions; finite element analysis; interior permanent magnet synchronous machine drive; interior permanent magnet synchronous machine rotor demagnetization characteristics; inverter faults; irreversible demagnetization; nonlinear magnetic behavior; phase-leg open-circuit fault; three-phase symmetrical short circuit fault; transient fault currents; uncontrolled generator mode fault; Circuit faults; Demagnetization; Integrated circuit modeling; Inverters; Magnetic circuits; Magnetic flux; Torque;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
Type :
conf
DOI :
10.1109/ECCE.2013.6647023
Filename :
6647023
Link To Document :
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