EFFECT OF OPERATING METHODS OF WIND TURBINE-GENERATOR SYSTEM ON NET POWER EXTRACTION UNDER WIND VELOCITY FLUCTUATIONS IN FIELDS

The effect of how a wind turbine generator system is operated is discu ssed from the viewpoint of net power extraction with wind velocity flu ctuations in relation to the scale and the dynamic behavior of the sys tem. On a wind turbine generator system consisting of a Darrieus-Savon ius hybrid wind turbine, a load generator and a battery, we took up tw o operating methods: constant tip speed ratio operation for a stand-al one system(Scheme1) and synchronous operation by connecting a grid(Sch eme2). With our simulation model, using the result of the net extracti ng power, we clarified that Schemel is more effective than Scheme2 for small-scale systems. Furthermore, in Schemel, the appropriate rated p ower output of the system under each wind condition can be confirmed. (C) 1998 Elsevier Science Ltd. All rights reserved.