Research Article Open Access

A MULTILEVEL CONVERTER WITH REDUCED NUMBER OF SWITCHES FOR FUEL CELL POWER CONDITIONING SYSTEM

K. Prasada Rao1 and Sukhdeo Sao2
  • 1 Department of EEE, Christu Jyothi Institute of Technology and Science, Jangaon, AP, India
  • 2 Department of EEE, Bharath Institute of Engineering and Technology, Hyderabad, AP, India

Abstract

This study investigates the potentials of cascaded five and seven level converters with reduced number of switches for fuel cell power conditioning system. Fuel cells is one of the most important sources of distributed energy because of its high efficiency, high energy density, plus high reliability and long life due to few moving parts. This study proposes a suitable multilevel converter with less number switches that fulfills the required performance specifications of a fuel cell power conditioning system. The dc-dc and dc-ac converters are required to produce constant magnitude and frequency voltage from fuel cells. However Switching losses in these converters reduce overall efficiency of the system. To improve the efficiency and to use in medium and high power applications, the multilevel converter with reduced number of switches is connected as dc-ac converter. To synthesize maximum levels at the output voltage, the proposed topology is optimized for various objectives, such as the minimization of the number of switches, gate driver circuits and capacitors and blocking voltage on switches. The operation and performance of the proposed multilevel converter have been evaluated by MATLAB/SIMULINK.

American Journal of Applied Sciences
Volume 11 No. 6, 2014, 978-993

DOI: https://doi.org/10.3844/ajassp.2014.978.993

Submitted On: 19 January 2014 Published On: 11 April 2014

How to Cite: Rao, K. P. & Sao, S. (2014). A MULTILEVEL CONVERTER WITH REDUCED NUMBER OF SWITCHES FOR FUEL CELL POWER CONDITIONING SYSTEM. American Journal of Applied Sciences, 11(6), 978-993. https://doi.org/10.3844/ajassp.2014.978.993

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Keywords

  • Cascaded Multilevel Converter
  • Fuel Cell
  • Reduced Number of Switches
  • Power Conditioning System
  • THD