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Voltage Amplitude Compensation Strategy for System of Parallel-operated Inverters Based on Hierarchical Cooperative Control
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Jiwei SUN  Student Member, CPSS1, Qi LIU  Student Member, CPSS2, Li ZHANG  Member, CPSS2, Yong ZHANG  Member, CPSS3, Ying LU  Member, CPSS3, Yan XING  Member, CPSS1
Journal of Power Supply | 2025, 23(4) : 70 - 78
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Journal of Power Supply | 2025, 23(4): 70-78
• DC-AC Inverters •
Voltage Amplitude Compensation Strategy for System of Parallel-operated Inverters Based on Hierarchical Cooperative Control
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Jiwei SUN  Student Member, CPSS1, Qi LIU  Student Member, CPSS2, Li ZHANG  Member, CPSS2, Yong ZHANG  Member, CPSS3, Ying LU  Member, CPSS3, Yan XING  Member, CPSS1
Affiliations
  • 1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
  • 2.School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China
  • 3.AISWEI Technology Co., Ltd., Shanghai 200000, China
Published: 2025-07-30 doi: 10.13234/j.issn.2095-2805.2025.4.70
Outline
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Due to the effects of the droop equation and equivalent impedance, the adoption of traditional droop control as a strategy for parallel-operated inverters will cause steady-state errors in the output voltage amplitude, which is not applicable to scenarios requiring high precision in voltage regulation. To solve this problem, a voltage amplitude compensation strategy based on hierarchical cooperative control for a system of parallel-operated inverters is proposed. The robust droop control is employed as the primary control instead of the traditional resistive droop method, which effectively constrains the amplitude error within a 5% margin and thus ensures the system’s capability to regulate voltage under different operation conditions. On the basis of analyzing the primary control error, the secondary voltage control is carried out utilizing a low-bandwidth communication system, and the voltage amplitude is tuned to the reference value to improve the compensation accuracy. Experimental results verified the feasibility and effectiveness of the proposed scheme.

System of parallel-operated inverters  /  droop control  /  voltage deviation  /  hierarchical cooperative control
孙纪伟中国电源学会学生会员, 刘淇中国电源学会学生会员, 张犁中国电源学会会员, 张勇中国电源学会会员, 卢盈中国电源学会会员, 邢岩中国电源学会会员. 基于分层协同控制的逆变器并联系统电压幅值补偿策略. 电源学报, 2025 , 23 (4) : 70 -78 . DOI: 10.13234/j.issn.2095-2805.2025.4.70
Jiwei SUN, Qi LIU, Li ZHANG, Yong ZHANG, Ying LU, Yan XING. Voltage Amplitude Compensation Strategy for System of Parallel-operated Inverters Based on Hierarchical Cooperative Control[J]. Journal of Power Supply, 2025 , 23 (4) : 70 -78 . DOI: 10.13234/j.issn.2095-2805.2025.4.70
Appendix
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Year 2025 volume 23 Issue 4
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.4.70
  • Receive Date：2024-08-02
  • Online Date：2026-10-26
  • Published：2025-07-30
Article Data
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History
  • Received：2024-08-02
  • Revised：2024-08-15
  • Accepted：2024-08-23
Affiliations
    1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2.School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China
    3.AISWEI Technology Co., Ltd., Shanghai 200000, China
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