Performance evaluation of a flywheel energy-storage system associated to a variable-speed wind generator

Abstract

The flywheel energy-storage systems (FESSs) are suitable for improving the quality of the electric power delivered by the wind generators and for helping these generators to contribute to the ancillary services. They are used for controlling the power flow from a variable-speed wind generator (VSWG) to the power grid or to an isolated load. This paper investigates the performance evaluation of a low-speed FESS with a classical squirrel-cage induction machine (IM), in order to control the power flow from the VSWG to the isolated load. The proposed system with the control strategy adopted is validated through simulations. The obtained results are presented and discussed. © Springer-Verlag Berlin Heidelberg 2012.