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.

[1]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..

[2]  T.A. Meynard,et al.  Multi-level conversion: high voltage choppers and voltage-source inverters , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[3]  L.M. Tolbert,et al.  Active harmonic elimination for multilevel converters , 2006, IEEE Transactions on Power Electronics.

[4]  Saad Mekhilef,et al.  New multilevel inverter topology with reduced number of switches , 2010 .

[5]  B. Ozpineci,et al.  Real time selective harmonic minimization for multilevel inverters using genetic algorithm and artificial neural network angle generation , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[6]  Vassilios G. Agelidis,et al.  Hybrid genetic algorithm approach for selective harmonic control , 2008 .

[7]  Ebrahim Babaei,et al.  New cascaded multilevel inverter topology with minimum number of switches , 2009 .

[8]  Esra Kandemir Beser,et al.  Design and Application of a Single Phase Multilevel Inverter Suitable for using as a Voltage Harmonic Source , 2010 .

[9]  Chang Ho Choi,et al.  A new simplified space-vector PWM method for three-level inverters , 2001 .

[10]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[11]  Keith Corzine,et al.  Control of cascaded multi-level inverters , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[12]  Muhammad H. Rashid,et al.  Power electronics handbook , 2001 .

[13]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..