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Review of Photovoltaic Power Equalizer Topologies
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Ben ZHAO1, Haoran CUI1, Yigeng HUANGFU1, Yongheng YANG2
Journal of Power Supply | 2025, 23(2) : 105 - 114
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Journal of Power Supply | 2025, 23(2): 105-114
• Renewable Energy System •
Review of Photovoltaic Power Equalizer Topologies
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Ben ZHAO1, Haoran CUI1, Yigeng HUANGFU1, Yongheng YANG2
Affiliations
  • 1 School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
  • 2 School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Published: 2025-03-30 doi: 10.13234/j.issn.2095-2805.2025.2.105
Outline
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To achieve the target of carbon neutrality, renewable energy power generation represented by photovoltaic (PV) power generation has become an important means. PV power generation systems usually require multiple PV modules to be connected in series to obtain a high output voltage. However, in series-connected PV modules, the mismatch of component characteristics due to partial shading or different degrees of aging of components will cause a serious loss of power generation. Therefore, many technical schemes have been proposed to solve this problem. The PV equalizer has become a promising solution, and it uses a power electronic converter to transfer the mismatched power and change the operating point of the component to obtain the maximum output power. First, the basic concepts and principles of PV equalizers are elaborated, then, the PV-bus, PV-PV and other special types of PV equalizers topologies are introduces in detail. In addition, a comparison and analysis of the paremeters and performance of the existing PV equalizer topologies is performed. Finally, the topological structures of PV equalizers are summarized and evaluated, providing a reference for engineers and practitioners in this field.

Photovoltaic (PV) power generation  /  mismatch  /  equalizer  /  differential power processing
Ben ZHAO, Haoran CUI, Yigeng HUANGFU, Yongheng YANG. Review of Photovoltaic Power Equalizer Topologies[J]. Journal of Power Supply, 2025 , 23 (2) : 105 -114 . DOI: 10.13234/j.issn.2095-2805.2025.2.105
Funding
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  • National Natural Science Foundation of China(51807164)
  • Shaanxi Key R&D Program(2022GY-175)
Appendix
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Year 2025 volume 23 Issue 2
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407
159
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.2.105
  • Receive Date：2022-01-03
  • Online Date：2025-07-01
  • Published：2025-03-30
Article Data
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History
  • Received：2022-01-03
  • Revised：2022-03-11
  • Accepted：2022-05-05
Funding
National Natural Science Foundation of China(51807164)
Shaanxi Key R&D Program(2022GY-175)
Affiliations
    1 School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
    2 School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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