TOPOLOGIES OF MULTILEVEL CONVERTERS: CONCEPT OF REDUNDANCY
1M.M.Irfan and 2Venugopal Rao
1Department of EEE, ADAM’S Engineering college-AP, India.
2Department of Electrical & Electronics Engineering, S R Engineering college-AP. Email : (Mujahid.email@example.com)
Switching state redundancy provides ﬂexibility in multilevel systems and maybe used to achieve some control objectives such as capacitors voltage balancing, current control of dc-sources, switch power loss balancing and fault tolerance. This paper studies the per-phase redundancy in three basic multilevel topologies: diode-clamped converter, ﬂying capacitor converter and cascaded bull-bridge converters. The number of per-phase redundant switching states, the rules for triggering each topology and the relationships among them are studied through this paper and simulation results are presented.
Keywords: multilevel converter, redundancy , cascaded bridge inverter
International eJournal of Mathematics and Engineering
Volume 2, Issue 1, Pages: 846 - 856