抄録
When introducing the variable speed operation for adequately utilizing wind energy, the small-scale systems have an advantage on net power extraction under fields wind conditions. This is because of the superior dynamic characteristics of the small-scale systems. Thus, in order to extract demanding electricity, it is necessary to adopt the parallel operation using plural wind turbines which have the appropriate system scale matching the wind condition. The purpose of this study is to propose the operating method of the parallel systems for higher power extraction than under the synchronous operation. At the first step, this paper examines the output characteristics of parallel system using two Darrieus-Savonius hybrid wind turbines and discusses the operating methods and points to extract maximum power output under two levels of input wind speed.
