DESIGN OF POINT ABSORBER WAVE ENERGY CONVERTER PROTOTYPE

• Main Author: Ihsan Sukardi , Adzana
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/53934
• Institution: Institut Teknologi Bandung

Electrical energy is one of the most essential forms of energy in humanity. In order to satisfy the electricity demand in Indonesia, the government has declared an acceleration in electricity infrastructure establishment to be completed in 2027 as well as an increase in renewable energy percentage up to 23% [1]. As Indonesia is a maritime country with 70% of its territory is covered in water, the form of renewable energy with the highest potential is sea wave energy. To convert this energy into electricity, there are several kinds of conversion equipment, one of which is the point absorber ponton-pendulum type, which still under development. In this thesis, a prototyping of wave energy converter (WEC) system on a smaller scale is conducted in order to perceive apt understanding in sea wave energy conversion into electricity. The prototype includes wave energy collector, ponton-pendulum type with direct mechanical power take-off system, and sinusoidal wave generator using the electric motor as a replacement of wave pool. The testing of the WEC system is performed under the condition of 10 cm wave amplitude in the frequencies of 40, 45, and 50 RPM. Subsequently, the potential of theoretical absorbed energy from the WEC system and the system efficiency is to be determined. The prototype of the WEC system has been designed with a rectified oscillation to unidirectional rotation on the transmission system. A sinusoidal wave generator as a replacement of wave pool has been designed as well using the Scotch-yoke mechanism. The maximum wave power in 50 RPM and 30 Ohm is determined to be 387,84mW. The maximum power is 183,54 mW, obtained at 50 RPM and 30 Ohm of resistance. The prototype average efficency at each frequency and 30 Ohm of resistance is 47,35%.