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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 2nd Annual Southern Power Electronics Conference (SPEC 2016), 5-8 December 2016, Auckland, New Zealand, pp. 1-6. ISBN 978-150901546-7 (2016) [Refereed Conference Paper]

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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 anti-parallel 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:AC motors, electric drives, electric inverters, fault tolerance, marine applications, power electronics, propulsion
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Marine Engineering
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Jayasinghe, SG (Dr Shantha Jayasinghe Arachchillage)
ID Code:121067
Year Published:2016
Deposited By:Seafaring
Deposited On:2017-09-08
Last Modified:2017-09-08

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