Document Type

Conference Proceeding

Language

eng

Format of Original

6 p.

Publication Date

5-15-2011

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Source Publication

2011 IEEE International Electric Machines & Drives Conference (IEMDC)

Source ISSN

978-1-4577-0061-3

Abstract

In this paper, a fault mitigation method for delta-connected induction motor-drive systems under a two-phase open-delta operating condition is analyzed and verified experimentally. This fault mitigation technique can provide an almost balanced set of motor line currents, and significantly reduce torque ripples even when the machine runs under the aforementioned faulty operating condition. This condition is analyzed using a magnetic equivalent circuit (MEC) model. This model is developed for a delta-connected induction motor which is coupled to its drive system, including the fault mitigation controller. This global motor-inverter model was simulated in a Matlab-Simulink environment, under both healthy and faulty conditions, while the inverter is operated in the open-loop mode. The results obtained from the global model are compared in the paper to the results obtained from the corresponding experimental motor-drive test data. A comparative analysis of the motor performance obtained from these results, under the faulty operating case, is presented. The experimental and simulation data show that the MEC model can provide reasonably accurate results. Thus, the validity and applicability of the fault mitigation technique is thereby verified.

Comments

Accepted version. Published as part of the proceedings of the 2011 IEEE International Electric Machines & Drives Conference (IEMDC), 2011: 699-704. DOI. © 2011 Institute of Electrical and Electronic Engineers (IEEE). Used with permission.

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