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

• Main Author: Putri Kania Hermanto, Adinda
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84989
• Institution: Institut Teknologi Bandung

The development of the times and population growth in Indonesia have significantly increased electricity consumption, especially in major cities. Currently, energy consumption is still dominated by fossil fuels such as petroleum, natural gas, and coal. However, Indonesia has great potential in renewable energy, particularly marine energy such as tidal energy in several regions. In this final project, tests were conducted on a four-blade vertical axis tidal current turbine model to assess its potential in Indonesian waters. The tests were carried out at the Wave Laboratory, Bandung Institute of Technology, which has a current generation tank profile with a current speed range of 0.03 – 0.75 m/s. The tests evaluated the characteristics of the tidal current turbine model, including angular velocity (?????), angular acceleration (?????), dynamic torque (????????), power coefficient (????????), dynamic torque coefficient (????????????), and thrust coefficient (????????). The evaluation was based on four boundary parameters: variations in water height relative to the submerged part of the turbine body at 100% and 75%, variations in blockage ratio values of 0.397 for 100% water height and 0.373 for 75% water height, variations in inverter values from 10 Hz to 50 Hz, and variations in attack angle values of -10°, -5°, 0°, 5°, and 10°. To observe the characteristics of the tidal current turbine model, data was collected by measuring the rotational speed using a gyroscope sensor in an Inertial Measurement Unit (IMU) and collecting thrust force data using a load cell sensor. It was found that the optimal characteristics of the tidal current turbine model were achieved for angular velocity at a 10° attack angle, for angular acceleration, dynamic torque, power coefficient, and dynamic torque coefficient at a 5° attack angle, and for thrust coefficient at a 10° attack angle.