Abstract
Recently, introduction of wind powered generation systems are extremely active all over the world. The scales of these output of the systems are more than 2MW as the grid connection systems. Moreover, the offshore wind powered generation systems are practical use level in European countries. This paper describes the development of large scale horizontal-axis propeller type of two-bladed and three-bladed wind powered generation systems in European countries and U.S.A from the historical point of view, especially focused on late 20^<th> century. Then, the authors describe the assignment of wind machines of coming generation.
