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Combined operation of DC isolated distribution and PV systems for supplying unbalanced AC loads

Author

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  • Noroozian, R.
  • Abedi, M.
  • Gharehpetian, G.B.
  • Hosseini, S.H.

Abstract

This paper describes a DC isolated network which is fed by distributed generation (DG) from photovoltaic (PV) renewable sources to supply unbalanced AC loads. The battery energy storage bank has been connected to the DC network via DC/DC converter called storage converter to control the network voltage and optimize the operation of the PV generation units. The PV units are connected to the DC network via its own DC/DC converter called PV converter to ensure the required power flow. The unbalanced AC loads are connected to the DC network via its own DC/AC converter called load converter without transformer. This paper proposes a novel control strategy for storage converter which has a DC voltage droop regulator. Also a novel control system based on Clarke and Park rotating frame has been proposed for load converters. In this paper, the proposed operation method is demonstrated by simulation of power transfer between PV units, unbalanced AC loads and battery units. The simulation results based on PSCAD/EMTDC software show that DC isolated distribution system including PV units can provide the balanced voltages to supply unbalanced AC loads.

Suggested Citation

  • Noroozian, R. & Abedi, M. & Gharehpetian, G.B. & Hosseini, S.H., 2009. "Combined operation of DC isolated distribution and PV systems for supplying unbalanced AC loads," Renewable Energy, Elsevier, vol. 34(3), pages 899-908.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:3:p:899-908
    DOI: 10.1016/j.renene.2008.05.043
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    References listed on IDEAS

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    1. Azbe, V. & Mihalic, R., 2006. "Distributed generation from renewable sources in an isolated DC network," Renewable Energy, Elsevier, vol. 31(14), pages 2370-2384.
    2. Dakkak, M. & Hatori, K. & Ise, T., 2006. "The concept of distribution flexible network PV system," Renewable Energy, Elsevier, vol. 31(12), pages 1916-1933.
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    Citations

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    Cited by:

    1. Torreglosa, Juan P. & García-Triviño, Pablo & Fernández-Ramirez, Luis M. & Jurado, Francisco, 2016. "Control strategies for DC networks: A systematic literature review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 319-330.
    2. Justo, Jackson John & Mwasilu, Francis & Lee, Ju & Jung, Jin-Woo, 2013. "AC-microgrids versus DC-microgrids with distributed energy resources: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 24(C), pages 387-405.
    3. Karabiber, Abdulkerim & Keles, Cemal & Kaygusuz, Asim & Alagoz, B. Baykant, 2013. "An approach for the integration of renewable distributed generation in hybrid DC/AC microgrids," Renewable Energy, Elsevier, vol. 52(C), pages 251-259.
    4. Eghtedarpour, N. & Farjah, E., 2012. "Control strategy for distributed integration of photovoltaic and energy storage systems in DC micro-grids," Renewable Energy, Elsevier, vol. 45(C), pages 96-110.
    5. Ahmad M. A. Malkawi & Ayman AL-Quraan & Luiz A. C. Lopes, 2023. "A Droop-Controlled Interlink Converter for a Dual DC Bus Nanogrid with Decentralized Control," Sustainability, MDPI, vol. 15(13), pages 1-25, June.
    6. Adriana Trejos & Daniel Gonzalez & Carlos Andres Ramos-Paja, 2012. "Modeling of Step-up Grid-Connected Photovoltaic Systems for Control Purposes," Energies, MDPI, vol. 5(6), pages 1-27, June.
    7. Pavel Tikhonov & Konstantin Morenko & Arseniy Sychov & Vadim Bolshev & Alexander Sokolov & Alexander Smirnov, 2022. "LED Lighting Agrosystem with Parallel Power Supply from Photovoltaic Modules and a Power Grid," Agriculture, MDPI, vol. 12(8), pages 1-12, August.
    8. Muhammad Omer Khan & Saeed Zaman Jamali, & Chul-Ho Noh & Gi-Hyeon Gwon & Chul-Hwan Kim, 2018. "A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios," Energies, MDPI, vol. 11(2), pages 1-15, February.
    9. Indu Rani, B. & Saravana Ilango, G. & Nagamani, C., 2012. "Power flow management algorithm for photovoltaic systems feeding DC/AC loads," Renewable Energy, Elsevier, vol. 43(C), pages 267-275.

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