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Design and research of off-grid wind-solar hybrid power generation systems

The complementary nature of wind and solar determines the advantages and potentiality of hybrid power generation systems. Off-grid wind-solar hybrid power generation systems are very important for remote areas and island coast defense in China. This paper classifies and summaries the structure of off-grid hybrid power generation systems first where the advantages and disadvantages of different system structures are described in detail. And then the design of off-grid wind-solar hybrid power generation systems, including design methods, capacity configuration of different parts, the classification and features of storage energy systems, is analyzed thoroughly. Through the analysis of different operation modes of the system, further exploration and study of control strategy has been carried out at last. The results of this study can be used to guide the research of off-grid wind-solar hybrid power generation systems.