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Suresh N.
Sathyabama University, India
Computer Science & IT Electrical & Electronics Engineering

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Reduction of Total Harmonic Distortion in Cascaded H-Bridge Inverter by Pattern Search Technique Suresh N.; R. Samuel Rajesh Babu
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 6: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.998 KB) | DOI: 10.11591/ijece.v7i6.pp3292-3298

Abstract

Pattern Search technique can be used to find the solution for the optimization problem. In this paper, pattern search algorithm has been utilized to calculate the switching angles for the cascaded H-bridge inverter with  the consideration of minimizing total harmonic distortion. Mathematical equations for the optimization problem were formulated by fourier analysis technique. Lower order harmonics such as third, fifth, seventh, ninth and eleventh order harmonics were taken into account to mitigate the total harmonic distortion of the inverter. Simulations have been carried out for thirteen level, fifteen level and seventeen level cascaded H-bridge inverter using matlab software. Total harmonic distortion of voltage and current for resistive load, resistive-inductive load and motor load were analyzed.
Co-Authors R. Samuel Rajesh Babu