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Optimal fault-tolerant control strategy for multi-phase motor drives under an open circuit phase fault condition

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5 Author(s)
Domenico Casadei ; Electrical Engineering Dept., University of Bologna, Viale Risorgimento, 2, 40136, Italy ; Michele Mengoni ; Giovanni Serra ; Angelo Tani
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In this paper an optimal disturbance-free control strategy suitable for open-phase fault operation of multi-phase current regulated motor drives, is presented and tested. The proposed strategy, which is based on the multiple space vector representation of multi-phase systems, minimizes the stator copper losses either in transient or steady-state operating conditions. The effectiveness of the proposed fault tolerant control strategy is verified for a five-phase permanent magnet motor using a finite element analysis. Furthermore, some experimental tests have been carried out on a seven-phase asynchronous motor drive prototype available in laboratory.

Published in:

Electrical Machines, 2008. ICEM 2008. 18th International Conference on

Date of Conference:

6-9 Sept. 2008