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Evaluation of Power Decoupling Circuit and Soft-switching Control Method for Photovoltaic-storage-charging Integrated System
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Xinchi WEI1, Rui LI2, Yu ZHANG1, Chaofan WEI2
Journal of Power Supply | 2026, 24(6) : 166 - 176
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Journal of Power Supply | 2026, 24(6): 166-176
• Renewable Energy Generation and Energy Storage •
Evaluation of Power Decoupling Circuit and Soft-switching Control Method for Photovoltaic-storage-charging Integrated System
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Xinchi WEI1, Rui LI2, Yu ZHANG1, Chaofan WEI2
Affiliations
  • 1.State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
  • 2.School of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Published: 2026-06-30 doi: 10.13234/j.issn.2095-2805.2026.6.166
Outline
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To fully consume the distributed photovoltaic (PV) while reducing the impact of electric vehicle charging on the distribution network, PV-storage-charging integrated systems are rapidly developing. However, the secondary harmonic current of the DC bus in a PV-storage-charging integrated system will cause problems such as oscillations of PV output power and an increase in the current stress on the switching tube. To ensure the efficiency and power density of the system while suppressing the secondary harmonic current, the performance of different power decoupling circuits is evaluated from several dimensions at first. Then, based on the selected circuit topology, a soft-switching modulation method and the corresponding closed-loop control strategy are proposed, which can effectively improve the harmonic current suppression capability while realizing the full-range zero-voltage switching (ZVS). Finally, the effectiveness of the power decoupling circuit and the proposed control strategy was verified by simulation and experimental results.

Photovoltaic (PV)-storage-charging integrated system  /  power decoupling  /  harmonic suppression  /  zero-voltage switching
魏新迟, 李睿, 张宇, 韦超凡. 光储充一体化系统的功率解耦电路评估及软开关控制方法. 电源学报, 2026 , 24 (6) : 166 -176 . DOI: 10.13234/j.issn.2095-2805.2026.6.166
Xinchi WEI, Rui LI, Yu ZHANG, Chaofan WEI. Evaluation of Power Decoupling Circuit and Soft-switching Control Method for Photovoltaic-storage-charging Integrated System[J]. Journal of Power Supply, 2026 , 24 (6) : 166 -176 . DOI: 10.13234/j.issn.2095-2805.2026.6.166
Funding
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  • State Grid Shanghai Municipal Electric Power Company(52094023003G)
  • Shanghai Science and Technology Commission(23YF1408000)
Appendix
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Year 2026 volume 24 Issue 6
29
2
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.6.166
  • Receive Date：2024-11-19
  • Online Date：2026-10-29
  • Published：2026-06-30
Article Data
Affiliations
History
  • Received：2024-11-19
  • Revised：2025-01-11
  • Accepted：2025-02-05
Funding
State Grid Shanghai Municipal Electric Power Company(52094023003G)
Shanghai Science and Technology Commission(23YF1408000)
Affiliations
    1.State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China
    2.School of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
References
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