DocumentCode :
1179471
Title :
IPM Synchronous Machine Drive Response to Symmetrical and Asynunetrical Short Circuit Faults
Author :
Welchko, B. A. ; Jahns, T. M. ; Soong, W. L. ; Nagashima, J. M.
Author_Institution :
University of Wisconsin at Madison, Wisconsin; University of Adelaide, Australia; General Motors-Advanced Technology Vehicles, Torrance, California
Volume :
22
Issue :
10
fYear :
2002
Firstpage :
57
Lastpage :
57
Abstract :
A closed-form solution is presented for the steady-state response of interior permanent magnet (IPM) synchronous machines to symmetrical short circuits including the effects of q-axis magnetic saturation. Machine response to single-phase asymmetrical short circuits is also investigated. Experimental data is presented to verify predicted behavior for both types of short circuits. It is shown that single-phase asymmetrical short circuit faults produce more severe fault responses with high pulsating torque and a significant threat of rotor demagnetization. A control strategy that purposely transitions such faults into symmetrical three-phase short circuits can minimize the fault severity and associated demagnetization risks. Implications for the design of IPM machines with improved fault tolerance are discussed.
Keywords :
Circuit faults; Closed-form solution; Demagnetization; Fault tolerance; Magnetic circuits; Permanent magnets; Saturation magnetization; Steady-state; Synchronous machines; Torque; Interior permanent magnet; inverter shutdown; protection; short circuit fault; synchronous machine; variable speed drive;
fLanguage :
English
Journal_Title :
Power Engineering Review, IEEE
Publisher :
ieee
ISSN :
0272-1724
Type :
jour
DOI :
10.1109/MPER.2002.4311734
Filename :
4311734
Link To Document :
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