DESIGN AND FABRICATION OF HYBRID PV-WIND TURBINE FOR A STAND-ALONE STREET LIGHTING

• Main Author: R M A P LILIPALY (NIM: 23114016), EKA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26876
• Institution: Institut Teknologi Bandung

Economics and environmental problems due to usage of fossil fuel as energy source is urgently needed to be solved especially in the last decade. Humans need to put more attention in energy generation sector. As a nation, Indonesia, which is located in equatorial area has abundant source of sun light up until 10 to 12 hours per day. Beside power from the sun, there is also another usable renewable energy source, wind. The usage of renewable energy in Indonesia has not been maximized yet, consider the availability of the source. 89% of Indonesia’s electricity generation comes from the fossil fuel, and public sector, such as airports, harbour, clean water supply and street lighting system, consumed 6% annually. Converting to renewable energy source for energy generation in this sector is a prove of Indonesia’s goverment’s concern for the issues mentioned above. Although the use of PV has already being used as an energy source for the street light system, another problem arise, the sunlight is not consistent all the time. Having said that, an alternate solution of going through this issue is to combine the PV system with another type of renewable energy source, and the current attention is to pairing the PV system and the wind power. <br /> <br /> Limitations found in the wind speed are obstacles in harnessing the wind energy, especially in Indonesia. A CFD simulation is conducted to obtain the best Cp for Savonius wind turbine, which is the best turbine type for low wind speed. This simulation used ANSYS 17.0, and it showed the best Savonius turbine’s geometry are the turbine with aspect ratio of 2 and blade puntir angle of 90°. This is followed with the design of the stand alone street lighting system using hybrid energy generation from PV-Wind turbine and stored in a battery system. With Indonesia’s street standard, the lamp size is 10W LED, with 12 hours of operational time. The street light height is 3m, while the savonius diameter is 1.25m and height 2.5m. The system used 2 PV module each 80Wp as the main source and the turbine used as the backup. The energy generated is sufficient to power the street light for 2 days, which include 1 autonomous day. The PV gave the largest portion of the energy around 94.2%, while wind only 5.8%.