Simulation Study of Energy Efficiency for a Hybrid Wind Turbine System

Energy Storage is evidently seen as a world-wide focusing research topic in recent years both for the industrial and academic sectors. This paper presents the recent research progress on a new hybrid system by integrating a wind turbine operation with compressed air energy storage. A scroll air motor is employed as the key device of "air-electricity power transformer" to convert compressed air energy to driving power for direct compensation of the generator driving power reduction during the low wind speed period. A complete mathematical model for the whole hybrid system is developed, and the model based pneumatic energy efficiency analysis is conducted under different operation conditions. The simulation results are of reference and guidance to the feasibility study and demonstrated the great potential of this proposed system for industrial applications.