Rancang Bangun Pembangkit Listrik Tenaga Bayu Skala Mikro Menggunakan Turbin Hybrid (Savonius – Darrieus)

Abstract

The energy crisis caused by the depletion of fossil fuel reserves necessitates the development of environmentally friendly and sustainable alternative energy sources. This study aims to design and develop a micro-scale Wind Power Plant using a hybrid turbine (Savonius–Darrieus) as a solution to harness local wind energy potential for street lighting needs in Sopotinjak Village. The methods used include hybrid turbine design, performance testing under open and closed circuit conditions, and efficiency analysis based on the Coefficient of Power (Cp) and Tip Speed Ratio (TSR). All tests were conducted by varying turbine types and installation heights. The turbine types tested were Savonius, Darrieus, and Hybrid, with height variations of 200 cm, 250 cm, and 300 cm. The results showed that in open-circuit conditions, the voltage generated by the hybrid turbine was 3.86% higher than Savonius and 3.83% higher than Darrieus. In closed-circuit conditions, the hybrid turbine produced 7.94% higher voltage than Savonius and 3.82% higher than Darrieus, while the current was 14.05% higher than Savonius and 6.15% higher than Darrieus. The power output of the hybrid turbine also showed a significant increase, being 23.1% greater than Savonius and 10.15% greater than Darrieus. The highest Cp value of 0.232% and the highest TSR value of 0.58 were both achieved by the hybrid turbine at a height of 300 cm. Nevertheless, the Savonius turbine demonstrated a more stable Cp increase trend across height variations compared to the other two turbine types.