[1] Mohammad Ahmad and B.H. Khan, Senior Member, IEEE “New Approaches for harmonic reduction in solar inverters”

[2] J. Rodriguez. J.-S. Lai, and F.Z. Peng, “Multilevel inverters: A survey of topologies, controls and applications,” IEEE Trans. Ind. Electron. vol. 49, No. 4, pp. 724-738, Aug.

[3] Ebrahim Babaei, Member, IEEE, Sara Laali, Student Member, IEEE, and Zahra Bayat” A single phase cascaded multilevel inverter based on a new basic unit with reduced number of power swithes.

[4] MariuszMalinowaski, Senior Member, IEEE, K.Gopakumar, Senior Member, IEEE, Jose Rodriguez, Senior Member, IEEE, and Marcelo A.Perez, Member IEEE “A Survey on Cascaded Multilevel Inverters”.

[5] Gobinath.K1, Mahendran.S2, Gnanambal.I3 “New cascaded H-bridge multilevel inverter with improved efficiency.” International journal of advanced research in Electrical, Electronics and Instrumentation Engineering Vol.2, issue 4, April 2013.

[6] MithunKuriakose, Anooja V S “Comparison of Performances of Switched DC Sources Inverter and Cascaded H-bridge Inverter”,International Journal of Science, Engineering and Technology Research, Volume 3, Issue 9, September2014.

[7] C. Govindaraju and K. Baskaran, Member, IEEE” Efficient Sequential Switching HybridModulation Techniques for Cascaded Multilevel Inverters” vol. 26, no. 6, June 2011.