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Design and Controller-In-Loop Simulations of a Low Cost Two-Stage PV-Simulator

Author

Listed:
  • Sridhar Vavilapalli

    (Department of Energy and Power Electronics, School of Electrical Engineering, VIT University, Vellore 632014, India)

  • Umashankar Subramaniam

    (Department of Energy and Power Electronics, School of Electrical Engineering, VIT University, Vellore 632014, India)

  • Sanjeevikumar Padmanaban

    (Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark)

  • Frede Blaabjerg

    (Center of Reliable Power Electronics (CORPE), Department of Energy Technology, Aalborg University, 9100 Aalborg, Denmark)

Abstract

A PV-Simulator is a DC power source in which the current-voltage (I-V) characteristics of different PV arrays can be programmed. With a PV-simulator, the operation of the solar power conditioning systems can be validated at a laboratory level itself before actual field trials. In this work, design, operation and controls for a two-stage programmable PV-simulator required for the testing of solar power conditioning systems are presented. The proposed PV-simulator consists of a three-level T-type active front-end converter in the first stage and a buck-chopper-based DC-DC converter in the second stage. An active front-end rectifier using a three-level T-type IGBT-based converter is used at the input stage to help in operating the system at unity power factor. A DC-DC converter at the output stage of the simulator is regulated to obtain the I-V characteristics of the programmed PV-Array. Hardware-In-Loop simulations are carried out to validate the proposed system and the associated controls implemented in the controller. As a case study, this PV-simulator is programmed with electrical parameters of a selected PV-array and the characteristics obtained from the PV-simulator are compared with the actual PV-array characteristics. The dynamic response of the system for sudden changes in the load and sudden changes in irradiance values are studied.

Suggested Citation

  • Sridhar Vavilapalli & Umashankar Subramaniam & Sanjeevikumar Padmanaban & Frede Blaabjerg, 2018. "Design and Controller-In-Loop Simulations of a Low Cost Two-Stage PV-Simulator," Energies, MDPI, vol. 11(10), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2774-:d:176024
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    References listed on IDEAS

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    1. Zhongfu Zhou & John Macaulay, 2017. "An Emulated PV Source Based on an Unilluminated Solar Panel and DC Power Supply," Energies, MDPI, vol. 10(12), pages 1-20, December.
    2. Sridhar Vavilapalli & Sanjeevikumar Padmanaban & Umashankar Subramaniam & Lucian Mihet-Popa, 2017. "Power Balancing Control for Grid Energy Storage System in Photovoltaic Applications—Real Time Digital Simulation Implementation," Energies, MDPI, vol. 10(7), pages 1-22, July.
    3. Sridhar, V. & Umashankar, S., 2017. "A comprehensive review on CHB MLI based PV inverter and feasibility study of CHB MLI based PV-STATCOM," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 138-156.
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    Cited by:

    1. Umashankar Subramaniam & Sridhar Vavilapalli & Sanjeevikumar Padmanaban & Frede Blaabjerg & Jens Bo Holm-Nielsen & Dhafer Almakhles, 2020. "A Hybrid PV-Battery System for ON-Grid and OFF-Grid Applications—Controller-In-Loop Simulation Validation," Energies, MDPI, vol. 13(3), pages 1-19, February.

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