Optimal design and remedial control of fault–tolerant permanent magnet motors

Fault–tolerant Permanent Magnet (PM) motors are good candidates for Electrical Vehicle (EV) applications, offering high power density, high efficiency and high reliability. This paper investigates optimal design and fault–tolerant control strategy of a four–phase fault–tolerant PM motor with a Halbach PM array, aiming to deal with short–circuit and open–circuit faults, respectively. First, by comparing with a conventional array, the Halbach PM array is evaluated for the fault–tolerant PM motor. Second, by optimising the stator tooth shape, the short–circuit current is limited. Third, by doubling the current of the healthy phase, a remedial control strategy for the open–circuit fault is proposed. The predicted results of the motor's performance are based on the finite element and co–simulation methods. Measurement results from tests on a laboratory prototype are used to verify the theoretical analysis.

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  • English

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  • Accession Number: 01483530
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 2013 4:25PM