Abstract

The variable speed wind turbine generator system (WTGS) has recently become more popular than the fixed speed system. In 2004, the worldwide market share of variable speed WTGS was more than 60%. Doubly fed induction generator (DFIG), wound field synchronous generator (WFSG), and permanent magnet synchronous generator (PMSG) are currently being used as variable speed wind generators. Besides the aforementioned classical machines used in variable speed operation of WTGS, the switched reluctance machine (SRM) has some superior characteristics suitable for wind power application. In this chapter, the construction and operation of switched reluctance generator (SRG) are presented. The static characteristics of SRG are involved. The power inverter circuits which can be used in SRG operation are presented. Furthermore, the control of a grid-connected variable speed wind turbine driving SRG is studied. Finally, the dynamic characteristics of variable speed wind turbine driving a switched reluctance generator are analyzed.

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