Analysis of a Multilevel Inverter Topology with Reduced Number of Switches
Multilevel inverter is energy conversion device that is generally used in medium-voltage and high-power applications. It offers lower total harmonic distortion, switching losses and voltage stress on switches than conventional inverter. In this chapter, the topologies of the conventional multilevel inverters are discussed and a novel multilevel inverter topology with the reduced number of power switches is proposed. Also, a modulation technique for the proposed multilevel inverter is introduced. This multilevel inverter structure consists of the level module units to enhance the level of the output voltage. Since a level module unit consists of only a DC voltage source and a bidirectional switch, this structure allows a reduction of the system cost and size. Effectiveness of the proposed topology has been demonstrated by analysis and simulation.
KeywordsConverter H-bridge Inverter Multilevel inverter Power converter Reduced number of switches
This work was supported by Scientific Research Projects Coordinating Office of Selcuk University (SÜBAP Project Number: 13701399).
- 1.J. Rodriguez, J.S. Lai, F.Z. Peng, Multilevel inverters: survey of topologies, controls, and applications. IEEE Trans. Ind. Appl. 49(4), 724–738 (2002)Google Scholar
- 2.S. Khomfoi, L.M. Tolbert, Power Electronics Handbook, 2nd Edn, Chapter 31—Multilevel Power Converters (Elsevier, Amsterdam, 2007), pp. 31/1–31/50Google Scholar
- 4.R.H. Baker, L.H. Bannister, Electric power converter. U.S. Patent 3 867 643, Feb 1975Google Scholar
- 5.R.H. Baker, High-voltage converter circuit, U.S. Patent 04-203-151, May 1980Google Scholar
- 6.A. Nabae, I. Takahashi, H. Akagi, A new neutral-point clamped PWM inverter, in Proceedings of the Industry Application Society Conference, pp. 761–766, 1980Google Scholar
- 7.T.A. Meynard, H. Foch, Multi-level conversion: high voltage choppers and voltage source inverters, in Proceedings of the IEEE Power Electronics Specialist Conference, vol. 1, pp. 397–403, 1992Google Scholar
- 8.F.J.T. Filho, Real-time selective harmonic minimization for multilevel inverters using genetic algorithm and artificial neural network angle generation. Ph.D. dissertation, University of Tennessee, 2012Google Scholar
- 10.R.A. Ahmed, S. Mekhilef, H.W. Ping, New multilevel inverter topology with reduced number of switches, in Proceedings of the 14th International Middle East Power Systems Conference, pp. 565–570, 2010Google Scholar
- 11.H. Karaca, A novel topology for multilevel inverter with reduced number of switches, lecture notes in engineering and computer science, in Proceedings of the World Congress on Engineering and Computer Science 2013, WCECS 2013, San Francisco, USA, pp. 350–354, 23–25 Oct 2013Google Scholar
- 14.M.S.A. Dahidah, V.G. Agelidis, M.V.Rao, Hybrid genetic algorithm approach for selective harmonic control. Energy Convers. Manag. 49, 131–142 (2008)Google Scholar
- 15.J.H. Seo, C.H. Choi, D.S. Hyun, A new simplified space—vector pwm method for three-level inverters. IEEE Trans. Power Electron. 16(4), 545–550 (2001)Google Scholar
- 16.B.P. McGrath, D.G. Holmes, Multicarrier PWM strategies for multilevel inverters. IEEE Trans. Ind. Electron. 49(4), 858–867 (2002)Google Scholar