InternationaleJournals

 

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.irfan1@gmail.com)


ABSTRACT:

 

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