A single-phase voltage boost multilevel inverter topology based on switched - capacitor dc-dc converter: simulation and experimentation

Authors

  • G. C. Diyoke Department of Electrical and Electronic Engineering, Michael Okpara University of Agriculture, Umudike, Abia State.
  • I. K.Onwuka Department of Electrical and Electronic Engineering, Michael Okpara University of Agriculture, Umudike, Abia State.
  • C. Ezugwu Department of Electrical and Electronic Engineering Technology, Federal Polytechnic, Nasarawa, Nasarawa State.

Keywords:

DC-DC Converter, Multilevel Inverter, Single-phase, Switched-Capacitor, Voltage Boost.

Abstract

The high demand of dc – ac boost power conversion has resulted in the multiplications of many multilevel inverter topologies. This paper presents a simulation and experimental report on single-phase voltage boost multilevel inverter topology based on switched-capacitor dc – dc converter. To keep the power circuit components to a minimum and boost the output voltage, a boost dc – dc converter is connected to a boost switched – capacitor dc – dc converter and finally linked with a conventional full-bridge dc – ac inverter. A low frequency modulation scheme is adopted for both switched-capacitor and full bridge converters. While high frequency switching technique is adopted for the boost converter. Operational principles, mathematical analysis, with MATLAB/Simulink simulation and experimental waveforms are displayed. Assessment of the proposed topology is done by comparing the simulation results with the experimental results. Multilevel inverter output voltage is obtained with a total harmonic distortion of 9.40% at a low single dc input voltage.

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Published

2021-12-04

Issue

Vol. 19 No. 1 (2021): Journal of Engineering and Applied Sciences

Section

Articles