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An Improved Single-Phase Multiple DC Source Inverter Topology for Distributed Energy System Applications

Author

Listed:
  • Mohd Faraz Ahmad

    (Department of Electrical Engineering, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh 202001, India)

  • M. Saad Bin Arif

    (Department of Electrical Engineering, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh 202001, India)

  • Uvais Mustafa

    (Power Electronics, Machines and Control Research Centre, University of Nottingham, Nottingham NG7 2RD, UK)

  • Mohamed Abdelrahem

    (High-Power Converter Systems (HLU), Technical University of Munich (TUM), 80333 Munich, Germany
    Electrical Engineering Department, Faculty of Engineering, Assiut University, Assiut 71516, Egypt)

  • Jose Rodriguez

    (Center for Energy Transition, Universidad San Sebastián, Santiago 8420524, Chile)

  • Shahrin Md. Ayob

    (Faculty of Electrical Engineering, Universiti Teknologi Malaysia UTM, Johor Bharu 81310, Malaysia)

Abstract

This work presents an improved structure of a single-phase muti-input multilevel inverter (MIMLI) for distributed energy resources, which is capable of producing a nine-level output in symmetric mode and 21 levels in asymmetrical mode. The topology uses four DC sources and ten switches, with four switches being bidirectional and the remaining unidirectional. The operation of the circuit is analyzed in an asymmetrical mode, and switching signals are accomplished using the Nearest Level Control (NLC) PWM technique. Depending on the value of the DC sources used, the number of levels can vary. In this work, different DC source algorithms were also proposed, and the analysis of the inverter has been carried out considering the algorithms producing the maximum number of levels. The inverter was simulated in MATLAB/Simulink under steady state and dynamic conditions, achieving a 3.89% THD in output. The thermal analysis was conducted using PLECS software 4.1.2 to assess losses and efficiency. A laboratory prototype of the proposed topology was developed and tested, confirming its performance through simulation results and proving it economically viable for medium- and high-power applications.

Suggested Citation

  • Mohd Faraz Ahmad & M. Saad Bin Arif & Uvais Mustafa & Mohamed Abdelrahem & Jose Rodriguez & Shahrin Md. Ayob, 2024. "An Improved Single-Phase Multiple DC Source Inverter Topology for Distributed Energy System Applications," Energies, MDPI, vol. 17(9), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2146-:d:1386784
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    References listed on IDEAS

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    1. Abdul Jabbar Memon & Mukhtiar Ahmed Mahar & Abdul Sattar Larik & Muhammad Mujtaba Shaikh, 2023. "A Comprehensive Review of Reduced Device Count Multilevel Inverters for PV Systems," Energies, MDPI, vol. 16(15), pages 1-29, July.
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