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Optimized Control Scheme for Single-phase Grid-forming Photovoltaic-supercapacitor System Considering Dynamic Response Improvement and Double-line Frequency Power Decoupling
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Jingyu GUO1, Jinyi SU  Student Member, CPSS1, Jia LIU  Senior Member, CPSS1, Haiping GUO2, Zeqi HONG2, Jinjun LIU  Fellow, CPSS1
Journal of Power Supply | 2026, 24(1) : 168 - 181
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Journal of Power Supply | 2026, 24(1): 168-181
• Renewable Energy Generation and Energy Storage •
Optimized Control Scheme for Single-phase Grid-forming Photovoltaic-supercapacitor System Considering Dynamic Response Improvement and Double-line Frequency Power Decoupling
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Jingyu GUO1, Jinyi SU  Student Member, CPSS1, Jia LIU  Senior Member, CPSS1, Haiping GUO2, Zeqi HONG2, Jinjun LIU  Fellow, CPSS1
Affiliations
  • 1.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • 2.Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou 510663, China
Published: 2026-01-30 doi: 10.13234/j.issn.2095-2805.2026.1.168
Outline
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An optimized control scheme for a single-phase grid-forming photovoltaic-supercapacitor system considering dynamic response improvement and double-line frequency power decoupling is proposed. Compared with the conventional scheme, this scheme integrates the supercapacitor energy storage with double-line frequency power decoupling, and there is no need for additional power decoupling circuits. The DC-link proportional integral resonant control, virtual rotor kinetic energy feedforward control and photovoltaic power feedforward control suitable for this topology are studied, so that the capacitance of the DC-link capacitor and supercapacitor is reduced. In addition, a small-signal linearized model for the second-order generalized integrator-based power calculation part is established, and a sector-based state feedback damping control scheme is put forward to improve the dynamic performance of the system. Experimental results verified the effectiveness of the proposed control scheme.

Single-phase converter  /  grid-forming converter  /  supercapacitor  /  photovoltaic power generation  /  second-order generalized integrator
郭景宇, 苏津毅中国电源学会学生会员, 刘佳中国电源学会高级会员, 郭海平, 洪泽祺, 刘进军中国电源学会会士. 计及动态响应提升与二倍频功率解耦的单相构网型光伏-超级电容系统优化控制方案. 电源学报, 2026 , 24 (1) : 168 -181 . DOI: 10.13234/j.issn.2095-2805.2026.1.168
Jingyu GUO, Jinyi SU, Jia LIU, Haiping GUO, Zeqi HONG, Jinjun LIU. Optimized Control Scheme for Single-phase Grid-forming Photovoltaic-supercapacitor System Considering Dynamic Response Improvement and Double-line Frequency Power Decoupling[J]. Journal of Power Supply, 2026 , 24 (1) : 168 -181 . DOI: 10.13234/j.issn.2095-2805.2026.1.168
Funding
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  • Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System(GPKLIOCNEPS-2023-KF-07)
Appendix
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Year 2026 volume 24 Issue 1
39
2
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.1.168
  • Receive Date：2024-09-28
  • Online Date：2026-10-26
  • Published：2026-01-30
Article Data
Affiliations
History
  • Received：2024-09-28
  • Revised：2024-12-01
  • Accepted：2024-12-25
Funding
Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System(GPKLIOCNEPS-2023-KF-07)
Affiliations
    1.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    2.Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou 510663, China
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