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New switched-capacitor-based boost inverter topology with reduced switch count

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Abstract

The boosting feature of switched capacitor-based multilevel inverter topologies has been highly recommended for photovoltaic-based applications. However, the main concern with these topologies is the voltage stress across the switches along with the power component count for a higher number of levels. In this paper, a new single-stage boost nine-level boost inverter (9LBI) topology has been proposed with a single floating capacitor unit that pertains to all of the mentioned concern. The proposed topology gives a voltage gain of two, while the voltage stresses across switches have been maintained to be equal to or less than the dc input supply. Phase disposition pulse width modulation (PD-PWM) and nearest level control pulse width modulation (NLC-PWM) techniques have been used for the control of the switches in the proposed topology. A comparative study of different similar topologies in terms of cost, efficiency, voltage stress, and component count sets the standard for the proposed topology. Different simulation and experimental results have been obtained to determine the workability of the proposed topology in different environments and operating conditions.

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Acknowledgements

The authors would like to thank University of Malaya, Malaysia, for providing financial support under the research grant Impact Oriented Interdisciplinary Research Grant (IIRG): IIRG011A-2019, and Ministry of Higher Education, Malaysia under Large Research Grant Scheme (LRGS): LR008-2019.

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Authors and Affiliations

  1. Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia

    Marif Daula Siddique, Saad Mekhilef & Noraisyah Mohamed Shah

  2. School of Software and Electrical Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, VIC, Australia

    Saad Mekhilef

  3. Center of Research Excellence in Renewable Energy and Power Systems, King Abdulaziz University, Jeddah, Saudi Arabia

    Saad Mekhilef

  4. Renewable Energy Lab, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia

    Jagabar Sathik Mohamed Ali

  5. SRM Institute of Science and Technology, Kattankulathur Campus, Chennai, India

    Jagabar Sathik Mohamed Ali

Authors
  1. Marif Daula Siddique
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  2. Saad Mekhilef
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  3. Noraisyah Mohamed Shah
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  4. Jagabar Sathik Mohamed Ali
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Correspondence to Saad Mekhilef.

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Siddique, M.D., Mekhilef, S., Shah, N.M. et al. New switched-capacitor-based boost inverter topology with reduced switch count. J. Power Electron. 20, 926–937 (2020). https://doi.org/10.1007/s43236-020-00102-x

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  • DOI: https://doi.org/10.1007/s43236-020-00102-x

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