IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v11y2018i7p1683-d154854.html
   My bibliography  Save this article

Analysis, Design and Implementation of Droop-Controlled Parallel-Inverters Using Dynamic Phasor Model and SOGI-FLL in Microgrid Applications

Author

Listed:
  • Bum-Jun Kim

    (College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea)

  • Ho-Jung Kum

    (College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea)

  • Jung-Min Park

    (College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea)

  • Chung-Yuen Won

    (College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea)

Abstract

The droop control strategy is widely used in islanded microgrids to control power flows according to the load condition, with the absence of a critical communication line, interfacing distributed energy sources to provide for the active and reactive power demand of loads. In this case, the system modeling for both steady-state and transient time is one of the key issues of a droop-controlled system for an inverter-based microgrid (MG). With the rapid development of microgrids, it is essential to identify the system stability and optimize the control parameters, taking into account the network and control dynamics caused by multiple tasks such as electric signal filtering, network synchronization, and so on. Therefore, in order to improve model accuracy and determine control coefficients, this paper analyzes and extends a dynamic phasor-based model to the droop-controlled parallel-inverters, considering network and control dynamics such as a low-pass filter, a second-order generalized integrator frequency-locked-loop (SOGI-FLL), and a system operating sequence. Moreover, discussed in this paper are both the design approaches for and the implementation of a droop-controlled parallel-inverter, which enables the system to be stable and reliable. To demonstrate the effectiveness and validity of this paper, PSIM simulation was performed and two parallel-inverters were combined as the proposed design procedure for the 4-kVA prototypes.

Suggested Citation

  • Bum-Jun Kim & Ho-Jung Kum & Jung-Min Park & Chung-Yuen Won, 2018. "Analysis, Design and Implementation of Droop-Controlled Parallel-Inverters Using Dynamic Phasor Model and SOGI-FLL in Microgrid Applications," Energies, MDPI, vol. 11(7), pages 1-19, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1683-:d:154854
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/11/7/1683/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/11/7/1683/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Chunxia Dou & Zhanqiang Zhang & Dong Yue & Hanxiao Gao, 2017. "An Improved Droop Control Strategy Based on Changeable Reference in Low-Voltage Microgrids," Energies, MDPI, vol. 10(8), pages 1-18, July.
    2. Jae-Hyuk Kim & Yoon-Seok Lee & Hyun-Jun Kim & Byung-Moon Han, 2017. "A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids," Energies, MDPI, vol. 10(11), pages 1-20, November.
    3. Demin Li & Bo Zhao & Zaijun Wu & Xuesong Zhang & Leiqi Zhang, 2017. "An Improved Droop Control Strategy for Low-Voltage Microgrids Based on Distributed Secondary Power Optimization Control," Energies, MDPI, vol. 10(9), pages 1-18, September.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yalong Hu & Wei Wei, 2018. "Improved Droop Control with Washout Filter," Energies, MDPI, vol. 11(9), pages 1-18, September.
    2. Miloud Rezkallah & Sanjeev Singh & Ambrish Chandra & Bhim Singh & Hussein Ibrahim, 2020. "Off-Grid System Configurations for Coordinated Control of Renewable Energy Sources," Energies, MDPI, vol. 13(18), pages 1-25, September.
    3. Jing Wang & Longhua Mu & Fan Zhang & Xin Zhang, 2017. "A Parallel Restoration for Black Start of Microgrids Considering Characteristics of Distributed Generations," Energies, MDPI, vol. 11(1), pages 1-18, December.
    4. Vasiliki Vita & Georgios Fotis & Christos Pavlatos & Valeri Mladenov, 2023. "A New Restoration Strategy in Microgrids after a Blackout with Priority in Critical Loads," Sustainability, MDPI, vol. 15(3), pages 1-21, January.
    5. Zhilin Lyu & Qing Wei & Yiyi Zhang & Junhui Zhao & Emad Manla, 2018. "Adaptive Virtual Impedance Droop Control Based on Consensus Control of Reactive Current," Energies, MDPI, vol. 11(7), pages 1-17, July.
    6. Henan Dong & Shun Yuan & Zijiao Han & Zhiyuan Cai & Guangdong Jia & Yangyang Ge, 2018. "A Comprehensive Strategy for Accurate Reactive Power Distribution, Stability Improvement, and Harmonic Suppression of Multi-Inverter-Based Micro-Grid," Energies, MDPI, vol. 11(4), pages 1-16, March.
    7. Monica Purushotham & Kowsalya Muniswamy, 2019. "Reinforced Droop for Active Current Sharing in Parallel NPC Inverter for Islanded AC Microgrid Application," Energies, MDPI, vol. 12(16), pages 1-27, August.
    8. Norbert Klaes & Nico Goldschmidt & Jens Fortmann, 2020. "Voltage Fed Control of Distributed Power Generation Inverters with Inherent Service to Grid Stability," Energies, MDPI, vol. 13(10), pages 1-15, May.
    9. Qiuxia Yang & Dongmei Yuan & Xiaoqiang Guo & Bo Zhang & Cheng Zhi, 2018. "A Novel Hierarchical Control Strategy for Low-Voltage Islanded Microgrids Based on the Concept of Cyber Physical System," Energies, MDPI, vol. 11(7), pages 1-24, July.
    10. Hisham M. Soliman & Ehab Bayoumi & Amer Al-Hinai & Mostafa Soliman, 2020. "Robust Decentralized Tracking Voltage Control for Islanded Microgrids by Invariant Ellipsoids," Energies, MDPI, vol. 13(21), pages 1-18, November.
    11. Giuseppe Barone & Giovanni Brusco & Alessandro Burgio & Daniele Menniti & Anna Pinnarelli & Michele Motta & Nicola Sorrentino & Pasquale Vizza, 2018. "A Real-Life Application of a Smart User Network," Energies, MDPI, vol. 11(12), pages 1-23, December.
    12. Changhong Deng & Yahong Chen & Jin Tan & Pei Xia & Ning Liang & Weiwei Yao & Yuan-ao Zhang, 2017. "Distributed Variable Droop Curve Control Strategies in Smart Microgrid," Energies, MDPI, vol. 11(1), pages 1-17, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1683-:d:154854. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.