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A five-level inverter scheme for a four-pole induction motor drive by feeding the identical voltage-profile windings from both sides
, A. Das, R. Ramchand, C. Patel, K. Gopakumar
Published in
2010
Volume: 57
   
Issue: 8
Pages: 2776 - 2784
Abstract
This paper presents a five-level inverter scheme with four two-level inverters for a four-pole induction motor (IM) drive. In a conventional three-phase four-pole IM, there exists two identical voltage-profile winding coil groups per phase around the armature, which are connected in series and spatially apart by two pole pitches. In this paper, these two identical voltage-profile pole-pair winding coils in each phase of the IM are disconnected and fed from four two-level inverters from four sides of the windings with one-fourth dc-link voltage as compared to a conventional five-level neutral-point-clamped inverter. The scheme presented in this paper does not require any special design modification for the induction machine. For this paper, a four-pole IM drive is used, and the scheme can be easily extended to IMs with more than four poles. The proposed scheme is experimentally verified on a four-pole 5-hp IM drive. © 2006 IEEE.
About the journal
JournalIEEE Transactions on Industrial Electronics
ISSN02780046