A Reconfigurable Fault-Tolerant PV Inverter via Integrating HERIC and H5 Topologies

Hossein Khoun Jahan, Nima Abdolmaleki, Mohammad Ahmadpour, Jianfei Chen, Caisheng Wang, Mehdi Abapour and Frede Blaabjerg
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Hossein Khoun Jahan: Electrical and Computer Engineering Department, University of Tabriz, Tabriz 51666, Iran
Nima Abdolmaleki: Electrical and Computer Engineering Department, Wayne State University, Detroit, MI 48202, USA
Mohammad Ahmadpour: Electrical and Computer Engineering Department, University of Tabriz, Tabriz 51666, Iran
Jianfei Chen: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Caisheng Wang: Electrical and Computer Engineering Department, Wayne State University, Detroit, MI 48202, USA
Mehdi Abapour: Electrical and Computer Engineering Department, University of Tabriz, Tabriz 51666, Iran
Frede Blaabjerg: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark

Energies, 2022, vol. 15, issue 9, 1-23

Abstract: Solar energy is prevalent in many applications, therefore, the reliability of solar energy systems has become an important topic for research communities and industry. High reliability and fault-tolerant capability are particularly vital for the solar energy systems that are mission-critical and/or inaccessible to affordable maintenance. In order to enhance the reliability of a grid-tied PV system, a fault-tolerant Photovoltaic (PV) inverter, termed Integrated Fault-Tolerant PV Inverter (IFTPVI), is proposed in this paper. The IFTPVI is based on the Highly Efficient and Reliable Inverter Concept (HERIC) and H5 inverters that are both popular and commercialized transformerless inverters in grid-tied PV applications. The IFTPVI can tolerate both open-circuit (OC) and short-circuit (SC) faults while maintaining the same voltage and current levels. The system description, reliability analysis, simulation in Matlab/Simulink 2018, and experimental results are provided to verify the feasibility and viability of the proposed inverter topology.

Keywords: PV inverter; fault-tolerant; reconfiguration; grid-tied PV system; open-and-short-circuit faults (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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