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Dynamic Performance Improvement of Five-Phase Permanent-Magnet Motor With Short-Circuit Fault.
- Source :
-
IEEE Transactions on Industrial Electronics . Jan2018, Vol. 65 Issue 1, p145-155. 11p. - Publication Year :
- 2018
-
Abstract
- Multiphase permanent-magnet (PM) brushless motors are popularly adopted for their high efficiency and high power density. However, short-circuit phase fault results in serious problems, such as increased torque fluctuations and deteriorated dynamic performance. This paper proposes a new vectorial approach to minimize pulsating torque and improve dynamic performance in a five-phase PM motor with short-circuit fault. The novelty of the proposed strategy is voltage feedforward compensation based on the relation of the short-circuit current and its fault-phase back electromotive force. First, the compensatory voltages are used to eliminate the impact of the short-circuit current. Then, its combination with the orthogonal reduced-order transformation matrices derived from fault-tolerant current references can improve the dynamic performance of the faulty PM motor. The effect of the short-circuit phase fault on the PM motor model under rotating synchronous frame is also discussed. This control strategy allows minimal reconfiguration of the control structure from healthy operation to fault-tolerant one and exhibits the improved dynamic performance. The simulated and experimental results are presented as validation for the proposed strategy. [ABSTRACT FROM PUBLISHER]
- Subjects :
- *PERMANENT magnet motors
*SHORT circuits
*TORQUE
*ELECTRIC potential
*VECTOR control
Subjects
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 65
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 126323926
- Full Text :
- https://doi.org/10.1109/TIE.2017.2714144