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A Novel Two-Stage Photovoltaic Grid-Connected Inverter Voltage-Type Control Method with Failure Zone Characteristics

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  • Xiangwu Yan

    (Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

  • Xueyuan Zhang

    (Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

  • Bo Zhang

    (Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

  • Zhonghao Jia

    (Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province, North China Electric Power University, Baoding 071003, China)

  • Tie Li

    (State Grid Liaoning Electric Power Research Institute, Shenyang 110006, China)

  • Ming Wu

    (China Electric Power Research Institute (CEPRI), Beijing 100192, China)

  • Jun Jiang

    (State Grid Beijing Electric Power Company, Beijing 100031, China)

Abstract

This paper investigates how to develop a two-stage voltage-type grid-connected control method for renewable energy inverters that can make them simulate the characteristics of a synchronous generator governor. Firstly, the causes and necessities of the failure zone are analyzed, and thus the traditional static frequency characteristics are corrected. Then, a novel inverter control scheme with the governor’s failure zone characteristics is proposed. An enabling link and a power loop are designed for the inverter to compensate fluctuations and regulate frequency automatically. Outside the failure zone, the inverter participates in the primary frequency regulation by disabling the power loop. In the failure zone, the droop curve is dynamically moved to track the corrected static frequency characteristic by enabling the power loop, resisting the fluctuation of grid frequency. The direct current (DC) bus voltage loop is introduced into the droop control to stabilize the DC bus voltage. Moreover, the designed dispatch instruction interface ensures the schedulability of the renewable energy inverter. Finally, the feasibility and effectiveness of the proposed control method are verified by simulation results from MATLAB (R2016a).

Suggested Citation

  • Xiangwu Yan & Xueyuan Zhang & Bo Zhang & Zhonghao Jia & Tie Li & Ming Wu & Jun Jiang, 2018. "A Novel Two-Stage Photovoltaic Grid-Connected Inverter Voltage-Type Control Method with Failure Zone Characteristics," Energies, MDPI, vol. 11(7), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1865-:d:158399
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    References listed on IDEAS

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    1. Jukka Viinamäki & Alon Kuperman & Teuvo Suntio, 2017. "Grid-Forming-Mode Operation of Boost-Power-Stage Converter in PV-Generator-Interfacing Applications," Energies, MDPI, vol. 10(7), pages 1-23, July.
    2. Vásquez, Virgilio & Ortega, Luis Mauro & Romero, David & Ortega, Rubén & Carranza, Oscar & Rodríguez, Jaime J., 2017. "Comparison of methods for controllers design of single phase inverter operating in island mode in a microgrid: Review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 76(C), pages 256-267.
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    Cited by:

    1. Diego Mejía-Giraldo & Gregorio Velásquez-Gomez & Nicolás Muñoz-Galeano & Juan Bernardo Cano-Quintero & Santiago Lemos-Cano, 2019. "A BESS Sizing Strategy for Primary Frequency Regulation Support of Solar Photovoltaic Plants," Energies, MDPI, vol. 12(2), pages 1-16, January.
    2. Teuvo Suntio & Tuomas Messo, 2019. "Power Electronics in Renewable Energy Systems," Energies, MDPI, vol. 12(10), pages 1-5, May.

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