Analytical Prediction of Short-Circuit Current in Fault-Tolerant Permanent Magnet Machines
Sun, Z.; Wang, J.; Howe, D.; Jewell, G.
Industrial Electronics, IEEE Transactions on
Volume PP, Issue 99, 0 Page(s):1 - 1
Digital Object Identifier   10.1109/TIE.2008.2003210
Summary:This paper describes an analytical technique that can be utilized to predict the short-circuit current in a fault-tolerant permanent magnet machine under partial turn short-circuit fault conditions. It has been shown that the current in partially short-circuited turns is dependent on their relative position in the slot where the phase winding is accommodated and the slot-leakage flux associated with these turns has a significant influence on the short-circuit current when a remedial action is applied. An analytical model which quantifies the variation of slot- leakage flux as a function of the relative position of partially short-circuited turns has been developed. Both finite element analysis and experiment results demonstrates effectiveness of the proposed technique for predicting the short-circuit current.

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