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IPM synchronous machine drive response to short circuit faults
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| Author(s) |
B. A. Welchko; T. M. Jahns; W. L. Soong; J. M. Nagashima |
| 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. |
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| Filename: | EPE2001 - PP01216 - Welchko.pdf |
| Filesize: | 139 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-09 by System |
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