Pitch Controller

Abstract

To investigate the impacts of the integration of fixed speed wind farms into utility networks, transient stability should be analyzed before connecting a wind turbine generator system (WTGS) to the power system. In this chapter, a new logical pitch controller equipped with a fuzzy logic controller (FLC) has been proposed that can enhance the transient performance of a WTGS during severe network disturbances. Moreover, it can maintain the output power at the rated level when the wind speed is higher than the rated speed. To evaluate the effectiveness of the proposed controller in improving the transient stability, simulations have been carried out for severe network disturbances and severe wind conditions, considering the mechanical dead zone of the pitch actuation system.