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A Multilevel Inverter System for an Induction Motor With Open-End Windings

Somasekhar, VT and Gopakumar, K and Baiju, MR and Mohapatra, Krishna K and Umanand, L (2005) A Multilevel Inverter System for an Induction Motor With Open-End Windings. In: IEEE Transactions on Industrial Electronics, 52 (3). pp. 824-836.


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In this paper, a multilevel inverter system for open-end winding induction motor drive is described. Multilevel inversion is achieved by feeding an open-end winding induction motor with two two-level inverters in cascade (equivalent a three-level inverter) from one end and a single two- inverter from the other end of the motor. The combined inverter system with open-end winding induction motor produces voltage space-vector locations identical to a six-level inverter. A 512 space-vector combinations are available in the proposed scheme, distributed over 91 space-vector locations. The proposed inverter drive scheme is capable of producing a multilevel pulsewidth-modulation (PWM) waveform for the phase voltage ranging from a two-level waveform to a six-level waveform depending on the modulation range. A space-vector PWM scheme for the proposed drive is implemented using a 1.5-kW induction motor with open-end winding structure.

Item Type: Journal Article
Publication: IEEE Transactions on Industrial Electronics
Publisher: Institute of Electrical and Electronics Engineers
Additional Information: Copyright 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Induction motor drive;multilevel inverters;open-end winding;pulsewidth-modulation (PWM) strategy
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 24 Jan 2006
Last Modified: 19 Sep 2010 04:19
URI: http://eprints.iisc.ac.in/id/eprint/3324

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