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Design and Control of Four-Port Non-Isolated SEPIC Converter for Hybrid Renewable Energy Systems

Author

Listed:
  • Anuradha Chandrasekar

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, Tamil Nadu, India)

  • Vijayalakshmi Subramanian

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, Tamil Nadu, India)

  • Narayanamoorthi Rajamanickam

    (Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, Tamil Nadu, India)

  • Mohammad Shorfuzzaman

    (Department of Computer Science, College of Computers and Information Technology, Taif University, Taif 21944, Saudi Arabia)

  • Ahmed Emara

    (Electrical Engineering Department, University of Business and Technology, Jeddah 23435, Saudi Arabia)

Abstract

A new four-port non-isolated SEPIC converter intended for hybrid renewable energy systems is presented in this study. The suggested converter minimizes space and expense by integrating two inputs and two outputs in a single-stage structure with fewer components. The converter retains important characteristics including continuous input current, buck/boost capability, non-inverting output, and enhanced power factor because it is based on the fundamental SEPIC topology. It effectively combines an energy storage system (ESS) with a variety of energy sources that have different voltage and current characteristics. The converter can be configured to operate in unidirectional or bidirectional topologies depending on whether storage elements are included. Performance is examined in two operating modes, with an emphasis on the ESS’s charging and discharging processes. System equations are produced by steady-state analysis, and the design of a closed-loop controller for accurate input power and output voltage regulation is informed by dynamic analysis performed with the state-space approach. Through real-time hardware implementation and MATLAB/Simulink simulations, the efficacy of the suggested design is verified, demonstrating the open-loop unidirectional topology’s theoretical and practical validity.

Suggested Citation

  • Anuradha Chandrasekar & Vijayalakshmi Subramanian & Narayanamoorthi Rajamanickam & Mohammad Shorfuzzaman & Ahmed Emara, 2024. "Design and Control of Four-Port Non-Isolated SEPIC Converter for Hybrid Renewable Energy Systems," Sustainability, MDPI, vol. 16(19), pages 1-24, September.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:19:p:8423-:d:1487448
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    References listed on IDEAS

    as
    1. Tae-Gyu Kim & Hoon Lee & Chang-Gyun An & Junsin Yi & Chung-Yuen Won, 2023. "Hybrid AC/DC Microgrid Energy Management Strategy Based on Two-Step ANN," Energies, MDPI, vol. 16(4), pages 1-23, February.
    2. Muhammad Awais & Laiq Khan & Said Ghani Khan & Qasim Awais & Mohsin Jamil, 2023. "Adaptive Neural Network Q-Learning-Based Full Recurrent Adaptive NeuroFuzzy Nonlinear Control Paradigms for Bidirectional-Interlinking Converter in a Grid-Connected Hybrid AC-DC Microgrid," Energies, MDPI, vol. 16(4), pages 1-40, February.
    3. Sameh Mahjoub & Larbi Chrifi-Alaoui & Saïd Drid & Nabil Derbel, 2023. "Control and Implementation of an Energy Management Strategy for a PV–Wind–Battery Microgrid Based on an Intelligent Prediction Algorithm of Energy Production," Energies, MDPI, vol. 16(4), pages 1-26, February.
    4. Jiashi Wang & Tingting Liu & Ke Ma, 2023. "Flexible and Low-Cost Emulation of Control Behaviors for Testing and Teaching of AC Microgrid," Energies, MDPI, vol. 16(4), pages 1-15, February.
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