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Fast Parameter Design Method of Phase-locked Loop for Grid-connected Inverters Based on Parameter Feasible Area
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Huaying ZHANG1, Qing WANG  Member, CPSS1, Yuting ZHENG  Student Member, CPSS2, Fan XIAO  Member, CPSS2, Qi GUO  Member, CPSS2
Journal of Power Supply | 2026, 24(5) : 88 - 96
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Journal of Power Supply | 2026, 24(5): 88-96
• Renewable Energy Generation and Energy Storage •
Fast Parameter Design Method of Phase-locked Loop for Grid-connected Inverters Based on Parameter Feasible Area
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Huaying ZHANG1, Qing WANG  Member, CPSS1, Yuting ZHENG  Student Member, CPSS2, Fan XIAO  Member, CPSS2, Qi GUO  Member, CPSS2
Affiliations
  • 1.New Smart City High-quality Power Supply Joint Laboratory of China Southern Power Grid, Shenzhen Power Supply Co., Ltd., Shenzhen 518020, China
  • 2.National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China
Published: 2026-05-30 doi: 10.13234/j.issn.2095-2805.2026.5.88
Outline
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The traditional parameter design methods based on gain margin (GM) and phase margin (PM) usually result in a low bandwidth of the phase-locked loop (PLL). This means that the fast dynamic of the PLL is sacrificed to improve system stability. Furthermore, the values of GM and PM are of only minor help in determining the maximum available power of a grid-connected inverter (GCI) system. Determining the maximum available power often requires complex multiple simulations or experiments. An operation-margin-based PLL parameter design method is proposed to solve the above problems. A small-signal model of GCI system considering the dynamic characteristics of current loop and PLL dynamics is established. Then, an open-loop transfer function model in complex vector form that can characterize the system is obtained. Based on this model, the three-dimensional control parameter domain under different operating point variables is plotted and the influences of output current and grid voltage on the value of control parameter are analyzed. Finally, the simulations and experiments verify the effectiveness and correctness of the proposed control parameter design method.

Grid-connected inverter (GCI)  /  phase-locked loop (PLL)  /  parameter design  /  stability analysis
张华赢, 汪清中国电源学会会员, 郑宇婷中国电源学会学生会员, 肖凡中国电源学会会员, 郭祺中国电源学会会员. 基于控制参数域的并网逆变器锁相环参数快速设计. 电源学报, 2026 , 24 (5) : 88 -96 . DOI: 10.13234/j.issn.2095-2805.2026.5.88
Huaying ZHANG, Qing WANG, Yuting ZHENG, Fan XIAO, Qi GUO. Fast Parameter Design Method of Phase-locked Loop for Grid-connected Inverters Based on Parameter Feasible Area[J]. Journal of Power Supply, 2026 , 24 (5) : 88 -96 . DOI: 10.13234/j.issn.2095-2805.2026.5.88
Funding
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  • Science and Technology Project of China Southern Power Grid(090000KK52222153)
Appendix
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Year 2026 volume 24 Issue 5
47
9
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.5.88
  • Receive Date：2024-05-17
  • Online Date：2026-10-29
  • Published：2026-05-30
Article Data
Affiliations
History
  • Received：2024-05-17
  • Revised：2024-06-24
  • Accepted：2024-07-06
Funding
Science and Technology Project of China Southern Power Grid(090000KK52222153)
Affiliations
    1.New Smart City High-quality Power Supply Joint Laboratory of China Southern Power Grid, Shenzhen Power Supply Co., Ltd., Shenzhen 518020, China
    2.National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China
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