Behara, S.Sandeep, N.Yaragatti, U.R.2026-02-052018IEEE Transactions on Industry Applications, 2018, 54, 5, pp. 4632-4639939994https://doi.org/10.1109/TIA.2018.2836911https://idr.nitk.ac.in/handle/123456789/25030This 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.Boolean algebraBridge circuitsCapacitorsElectric invertersElectric transformersElectric windingsPower qualityPulse width modulationSwitchesVoltage controlComprehensive costsDesign and implementationsMultilevel inverterMultilevel inverter topologyPrototypesSingle dc sourceSingle-phase transformersVoltage levelsTopology