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Five-level inverter scheme for an open-end winding induction machine with less number of switches
S. Figarado, , R. Ramchand, A. Das, C. Patel, K. Gopakumar
Published in
2010
Volume: 3
   
Issue: 4
Pages: 637 - 647
Abstract
Higher level of inversion is achieved with a less number of switches in the proposed scheme. The scheme proposes a five-level inverter for an open-end winding induction motor which uses only two DC-link rectifiers of voltage rating of Vdc/4, a neutral-point clamped (NPC) three-level inverter and a two-level inverter. Even though the two-level inverter is connected to the high-voltage side, it is always in square-wave operation. Since the two-level inverter is not switching in a pulse width modulated fashion and the magnitude of switching transient is only half compared to the convention three-level NPC inverter, the switching losses and electromagnetic interference is not so high. The scheme is experimentally verified on a 2.5 kW induction machine. © 2010 © The Institution of Engineering and Technology.
About the journal
JournalIET Power Electronics
ISSN17554535