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A Unified Current Loop Tuning Approach for Grid-Connected Photovoltaic Inverters

Author

Listed:
  • Weiyi Zhang

    (Department of Electrical Engineering, Technical University of Catalonia, Rambla Sant Nebridi 22, Terrassa, Barcelona 08222, Spain)

  • Daniel Remon

    (Department of Electrical Engineering, Technical University of Catalonia, Rambla Sant Nebridi 22, Terrassa, Barcelona 08222, Spain)

  • Antoni M. Cantarellas

    (Department of Electrical Engineering, Technical University of Catalonia, Rambla Sant Nebridi 22, Terrassa, Barcelona 08222, Spain
    Abengoa Research, Abengoa, Energia Solar 1, Palmas Altas, Seville 41014, Spain)

  • Pedro Rodriguez

    (Department of Electrical Engineering, Technical University of Catalonia, Rambla Sant Nebridi 22, Terrassa, Barcelona 08222, Spain
    Abengoa Research, Abengoa, Energia Solar 1, Palmas Altas, Seville 41014, Spain)

Abstract

High level penetration of renewable energy sources has reshaped modern electrical grids. For the future grid, distributed renewable power generation plants can be integrated in a larger scale. Control of grid-connected converters is required to achieve fast power reference tracking and further to present grid-supporting and fault ride-through performance. Among all of the aspects for converter control, the inner current loop for grid-connected converters characterizes the system performance considerably. This paper proposes a unified current loop tuning approach for grid-connected converters that is generally applicable in different cases. A direct discrete-time domain tuning procedure is used, and particularly, the selection of the phase margin and crossover frequency is analyzed, which acts as the main difference compared with the existing studies. As a general method, the approximation in the modeling of the controller and grid filter is avoided. The effectiveness of the tuning approach is validated in both simulation and experimental results with respect to power reference tracking, frequency and voltage supporting.

Suggested Citation

  • Weiyi Zhang & Daniel Remon & Antoni M. Cantarellas & Pedro Rodriguez, 2016. "A Unified Current Loop Tuning Approach for Grid-Connected Photovoltaic Inverters," Energies, MDPI, vol. 9(9), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:9:p:723-:d:77580
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    References listed on IDEAS

    as
    1. Martinez-Rodrigo, Fernando & de Pablo, Santiago & Herrero-de Lucas, L. Carlos, 2015. "Current control of a modular multilevel converter for HVDC applications," Renewable Energy, Elsevier, vol. 83(C), pages 318-331.
    2. Ngoc Bao Lai & Kyeong-Hwa Kim, 2016. "An Improved Current Control Strategy for a Grid-Connected Inverter under Distorted Grid Conditions," Energies, MDPI, vol. 9(3), pages 1-23, March.
    3. Ningyun Zhang & Houjun Tang & Chen Yao, 2014. "A Systematic Method for Designing a PR Controller and Active Damping of the LCL Filter for Single-Phase Grid-Connected PV Inverters," Energies, MDPI, vol. 7(6), pages 1-21, June.
    4. Hae-Gwang Jeong & Gwang-Seob Kim & Kyo-Beum Lee, 2013. "Second-Order Harmonic Reduction Technique for Photovoltaic Power Conditioning Systems Using a Proportional-Resonant Controller," Energies, MDPI, vol. 6(1), pages 1-18, January.
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    Cited by:

    1. Junhui Li & Tianyang Zhang & Lei Qi & Gangui Yan, 2017. "A Method for the Realization of an Interruption Generator Based on Voltage Source Converters," Energies, MDPI, vol. 10(10), pages 1-19, October.
    2. Mahdi Shahparasti & Pedro Catalán & Nurul Fazlin Roslan & Joan Rocabert & Raúl-Santiago Muñoz-Aguilar & Alvaro Luna, 2018. "Enhanced Control for Improving the Operation of Grid-Connected Power Converters under Faulty and Saturated Conditions," Energies, MDPI, vol. 11(3), pages 1-21, February.
    3. Hemakesavulu Oruganti & Subranshu Sekhar Dash & Chellammal Nallaperumal & Sridhar Ramasamy, 2018. "A Proportional Resonant Controller for Suppressing Resonance in Grid Tied Multilevel Inverter," Energies, MDPI, vol. 11(5), pages 1-15, April.
    4. Shiying Zhou & Xudong Zou & Donghai Zhu & Li Tong & Yong Kang, 2017. "Improved Capacitor Voltage Feedforward for Three-Phase LCL-Type Grid-Connected Converter to Suppress Start-Up Inrush Current," Energies, MDPI, vol. 10(5), pages 1-19, May.
    5. Lei Chen & Hongkun Chen & Jun Yang & Yanjuan Yu & Kaiwei Zhen & Yang Liu & Li Ren, 2017. "Coordinated Control of Superconducting Fault Current Limiter and Superconducting Magnetic Energy Storage for Transient Performance Enhancement of Grid-Connected Photovoltaic Generation System," Energies, MDPI, vol. 10(1), pages 1-23, January.

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