Study on a wind turbine in hybrid connection with a energy storage system

Abstract

Wind energy has been focused as an inexhaustible and abundant energy source for electrical power generation and its penetration level has increased dramatically worldwide in recent years. However, its intermittence nature is still a universally faced challenge. As a possible solution, energy storage technology hybrid with renewable power generation process is considered as one of options in recent years. The paper aims to study and compare two feasible energy storage means-compressed air (CAES) and electrochemical energy storage (ECES) for wind power generation applications. A novel CAES structure in hybrid connection with a small power scale wind turbine is proposed. The mathematical model for the hybrid wind turbine system is developed and the simulation study of system dynamics is given. Also, a pneumatic power compensation control strategy is reported to achieve acceptable power output quality and smooth mechanical connection transition. © 2011 Springer Science+Business Media B.V.