1. Research Institute for Applied Mechanics (RIAM), Kyushu University, Kasuga, Fukuoka, Japan
2. Engineering and Technology Development Department, Wind Power Business Unit, Hitachi Zosen Corporation, Suminoe-ku, Osaka, Japan
3. Department of Electromechanical Engineering, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
4. Department of Mechanical Engineering, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago, Chile
5. Energy Center, Universidad de Chile, Santiago, Chile