• Amandeep Singh
• Saurav Negi
• Sulata Bhandari

In this paper, a Newton Raphson iterative technique is applied on cascaded multilevel inverter in order to determine the switching angles that eliminates specified higher order harmonics while maintains the required fundamental output voltage. This technique can be applied to any number of levels of multilevel inverters. A nine-level inverter is considered in this paper and the optimized switching angles are calculated in order to eliminate the lower order harmonics using SHE equations.

Cascaded H-Bridge Multilevel Inverters (CHB-MLIs), Newton– Raphson method (NR), Selective Harmonic Elimination (SHE), Total Harmonic Distortion (THD), Weighted Total Harmonic Distortion (WTHD).

"Harmonic Minimization Using Newton Raphson Method", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 7, page no.1-6, July-2019, Available :http://www.jetir.org/papers/JETIR1906M21.pdf

"Harmonic Minimization Using Newton Raphson Method", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 7, page no. pp1-6, July-2019, Available at : http://www.jetir.org/papers/JETIR1906M21.pdf