Behara, S.Sandeep, N.Yaragatti, Udaykumar R.2020-03-312020-03-312018IEEE Transactions on Industry Applications, 2018, Vol.54, 5, pp.4632-4639https://idr.nitk.ac.in/jspui/handle/123456789/10970This paper presents a nine-level transformer-based inverter requiring only eight switches. The envisaged structure consists of two standard H-bridges fed from a single dc source. Besides, a single-phase transformer is employed to aid the process of intermediate voltage level generation. An ad-hoc pulsewidth modulation scheme based on boolean logic form equations is developed to derive the gating pulses. An effortless extension of the proposed inverter to a higher number of voltage levels is also achieved by generalizing the switching functions. Furthermore, the superior performance of the proposed topology is demonstrated through a comprehensive cost-based analysis. Finally, the validation of the proposed topology is accomplished through experiments on a down-scale prototype, and the measurement results are included. 1972-2012 IEEE.Article