PHYSICAL MODEL EXPERIMENT OF TIDAL CURRENT TURBINE: A CASE STUDY OF THREE-BLADES VERTICAL AXIS TURBINE

• Main Author: Angelin, Jesa
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84963
• Institution: Institut Teknologi Bandung

In this era of modernization, the advancement of technology and information is progressing at an increasingly rapid pace. Naturally, as technology develops, the public's demand for electricity will also increase. Tidal currents are one of the renewable energy sources with significant potential in Indonesia. In this final project, research was conducted on the testing of a three-blade vertical axis tidal current turbine model, carried out at the Ocean Engineering Wave Laboratory of ITB. The testing was conducted to obtain turbine characteristics such as angular velocity (?????), angular acceleration (?????), dynamic torque (????), power coefficient (????????), dynamic torque coefficient (????????), and thrust coefficient (????????) under several constraints. These constraints include variations in water height, with 100% turbine submersion and 75% turbine submersion, using two blockage ratio variations: 0.397 for 100% turbine submersion and 0.373 for 75% turbine submersion, five inverter frequency variations: 10 Hz, 20 Hz, 30 Hz, 40 Hz, and 50 Hz, and five attack angle variations: -10º, -5º, 0º, 5º, and 10º. Data collection utilized an inertial measurement unit (IMU) sensor for turbine rotation measurement and a load cell sensor for measuring forces from turbine movement. The three-blade vertical axis tidal current turbine model achieved maximum values when using a 0° attack angle at 100% water height. The power coefficient based on dynamic torque ranged from 0.019 to 0.088, and the power coefficient based on static torque ranged from 0.127 to 0.466.