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Marine propulsion PM motor control under inverter partial fault


Fernando, N and Jayasinghe, SG and Abkenar, AT, Marine propulsion PM motor control under inverter partial fault, Proceedings of the IEEE Southern Power Electronics Conference 2016 (SPEC 2016), 5-8 December 2016, Auckland, New Zealand, pp. 1-6. ISBN 978-1-5090-1546-7 (2016) [Refereed Conference Paper]

Copyright Statement

Copyright 2016 IEEE

DOI: doi:10.1109/SPEC.2016.7846210


Fault tolerance is an essential feature in marine and naval electric propulsion drives. Therefore, there is a growing research interest in developing fault tolerant technologies for marine applications. This paper investigates the control and operation of an inverter fed PM propulsion motor under a specific power electronic failure case. Compared to the technologies reported in literature, this paper formulates a special control strategy for the motor operation during the situation where only one high side switch and one low side switch in two different phases are operational in a standard three-phase six-switch inverter. The proposed control strategy assumes that the remaining switches are failed in open circuit while the corresponding antiparallel diodes are functional. The mathematical background of the two quadrant control strategy is formulated. The operation is analyzed in the context of marine propulsion power/speed requirements. Simulations for a 50 kW three-phase fault tolerant motor is presented for the operation with the proposed dual switch control strategy. Controllability of motor torque for speeds up to 45% rated speed corresponding to approximately 9% rated propulsion power output is achieved without overrating the device current ratings.

Item Details

Item Type:Refereed Conference Paper
Keywords:electric ships, inverter faults
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Marine engineering
Objective Division:Energy
Objective Group:Energy efficiency
Objective Field:Transport energy efficiency
UTAS Author:Jayasinghe, SG (Dr Shantha Jayasinghe Arachchillage)
ID Code:120636
Year Published:2016
Deposited By:Seafaring and Maritime Operations
Deposited On:2017-08-29
Last Modified:2018-05-09

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