A Review of Adaptive Control Methods for Grid-Connected PV Inverters in Complex Distribution Systems

Tiantian Cao, Zhengyang Ye, Qiong Wu, Xiaorong Wan, Jiangyun Wang and Dayi Li ()
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Tiantian Cao: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Zhengyang Ye: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Qiong Wu: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Xiaorong Wan: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jiangyun Wang: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Dayi Li: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Energies, 2025, vol. 18, issue 3, 1-24

Abstract: With the growth of energy demand and the aggravation of environmental problems, solar photovoltaic (PV) power generation has become a research hotspot. As the key interface between new energy generation and power grids, a PV grid-connected inverter ensures that the power generated by new energy can be injected into the power grid in a stable and safe way, and its power grid adaptability has also received more and more close attention in the field of new energy research. This research focuses on the discussion of PV grid-connected inverters under the complex distribution network environment, introduces in detail the domestic and international standards and requirements on grid-connected inverter grid adaptability, and then analyzes in depth the impacts of the access point voltage changes, access point frequency changes, and access point harmonic changes on the inverters. In order to enhance the adaptability of grid-connected inverters under these abnormal conditions, this research systematically summarizes and concludes a series of inverter adaptive control strategies, which provide literature guidance to effectively reduce the probability of power system faults and improve the reliability of the power system. Finally, the future development direction of PV inverter technology is outlooked, pointing out that, with the increase in the proportion of PV power generation in the power system, PV inverters need to evolve gradually from adapting to the grid to supporting the grid and promote the transformation of PV power generation from the auxiliary power source to the main power source through the integration of PV and energy storage.

Keywords: photovoltaic grid-connected inverter; power grid adaptability; control strategy; power system fault (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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