Abstract-This paper presents electrical energy modeling from sea waves in the Gulf of Thailand using fuzzy modeling. We measured the wave height and electric power by using a video camera and multi meters at loads of 300 W. This information is used for modeling to analyze the relationship between the amplitude of the sea wave and the electric power. This model can be used to predict the electrical energy from sea waves as well. Keywords-sea wave; fuzzy modelling; Gulf of Thailand; electric generation Currently, renewable energy sources are part of the policy of the Thai government to increase power generation. This is because of oil price increases and the problem of global warming. Therefore, renewable energy sources such as sunlight, wind, and sea waves are needed. Electricity generation from wind turbines and solar cells are frequently used, but there are problems about cost and maintenance. The cost of the electricity generation using wind turbine and solar cells currently average 250 and 160 Baht per watt respectively. Maintenance service costs for turbine and tower problems are more than 15,000 Baht per visit, not including spare parts. Therefore the alternative renewable energy from sea waves is an interesting concept. Power generation from sea waves has been developed since 1970. Many types of wave energy converters (WECs) have been invented, developed and tested in small and large scale experiments. These types are also separated depending on installation: namely, off-shore, nearshore, and on-shore. The off-shore generation has an advantage in the case of maximum power generation. The near-shore generation provides smaller electricity power generation. Although on-shore generation will provide large electricity generation but the large construction will not be environmentally friendly. Most recently, researchers have invented power generation from sea waves using permanent magnet linear generators. They have direct energy conversion and incompact systems [1] [2] [3] [4] . The main components consist of a floating buoy, linear generator and gear box. To obtain the maximum energy from the sea, location of the installation is off shore in deep sea [5] . However the cost of electric transmission and maintenance are increased because of the long distance between the power plant and the land. The research in [6-8] used a fuzzy model to predict electric power from wind energy. It found that the fuzzy model can predict conveniently and accurately. In this paper, we propose electric generation at a near shore location of which the main component consists of a buoy with a 1.2 m diameter, a 320 W permanent magnetic generator from a washing machine, and a gear box with ratio of 7:1. Firstly the generator was tested to find the characteristics. Then a buoy and gear box were designed to maximize generation. To implement, the base station was designed and constructed with no footing at the Sirindhorn International Environmental Park in the Gulf of Thailand. The generation system was installed on the base station near shore with 1-3 m depth. The generated electrical energy was recorded with buoyancy movement and sea wave amplitude for modeling of the coupled magnetic-electric-mechanic system. These measurement data is used for analyzing and training the fuzzy model.
Electrical energy modeling from sea waves in the Gulf of Thailand using fuzzy modeling is presented in REF .
Fuzzy Electric Generation Modeling from Sea Wave Energy in Gulf of Thailand
Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering
Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering
Geology