Perpustakaan Digital ITB

Indonesia is still lagging in adopting wind energy as the primary renewable source. Even though, Indonesia had built its first wind farm at Sidrap region. It uses 30 Gamesa G114-2.5 MW turbine. The turbine has ???????? values less than 0.5. Unfortunately, it appears that average windspeed at Sidrap is not very well suited for the turbine. Hence, there is a space for improvement by increasing efficiency and having less costly turbine. The focus of this study is to produce wind turbine blade design with maximized Annual Energy Production (AEP) and minimized blade skin area. To achieve that, a single point multilevel optimization scheme is used. The optimization results new airfoil profile, chord distribution, and twist angle distribution. Fluid flow solver program named XFOIL is used in this study to aid the optimization program. The optimization succeeded in increasing AEP by 536 MWH or a 7.6% increase with lower blade skin area. With the increasing world energy demand, space for further optimization is open, especially for utility scale wind turbine. The optimization presented in this study can be further improved to yield better result.