Publication Type:

Conference Paper


India International Conference on Power Electronics, IICPE 2010, New Delhi (2011)





Capacitor voltages, Capacitors, Cascaded multilevel inverters, Circuit complexity, Common mode voltage, Conventional topologies, Cost effective, DC power transmission, DC sources, DC supplies, DC transformers, Diode rectifier, Diode-clamped, Electric inverters, Electric rectifiers, Entire system, Full bridge, Harmonic frequency, High quality, Magnetic flux, Mathematical modeling, Multi-level, Multi-winding multi tapped transformer, Multi-winding transformer, Multilevel inverter, Multilevel inverter topology, Power electronics, PSICE modeling, Quality performance, Selective addition, Switching, Switching process, Topology, Transformer core, Transformer models, Wave forms, Wave shape, Winding, Working principles


The present work proposes a simple cost effective multilevel topology for generating high quality sinusoidal AC waveform based onmulti-tapped multi-winding transformer switching technique. Multi-winding multi-tapped transformers are used to aid the multi-level switching process which guarantees a large number of intermediate switching levels. Each secondary tapping can act as a separate DC source derived from the single DC supply input to feed the second transformer. The proposed topology can generate 27 switching states by using only 8 switches and 3 full bridge diode rectifiers. The basic working principle is based on the selective addition and subtraction of magnetic flux in the transformer core. Although the mathematical modeling of multi-winding multi-tapped transformer is slightly complex, the resulting circuit complexity reduces when compared to the conventional topologies like diode clamped, capacitor clamped and cascaded multilevel inverters. The present work uses PSPICE and MATLABmodeling techniques to simulate the entire system using synthesized multi-winding multi-tapped transformer models. Also the proposed system has superior quality performance characteristics when compared to the conventional topologies, due to its ability to avoid major drawbacks like capacitor voltage unbalancing, common mode voltage stresses at the load end and the requirement of large filters to avoid the presence of harmonic frequencies at the output. ©2011 IEEE.


cited By (since 1996)0; Conference of org.apache.xalan.xsltc.dom.DOMAdapter@712a0383 ; Conference Date: org.apache.xalan.xsltc.dom.DOMAdapter@7d4cc77f Through org.apache.xalan.xsltc.dom.DOMAdapter@3bbda31d; Conference Code:84417

Cite this Research Publication

E. S. Deepak, Anil, C. S., Sanjay, S., Febi, C., and Sajina, K. R., “A novel multilevel inverter topology based on multi-winding multi-tapped transformers for improved wave shape requirements”, in India International Conference on Power Electronics, IICPE 2010, New Delhi, 2011.