This paper presents some results of fabrication and experiment of an electrical generator for sea wave energy. The electrical generator device is fixed on the bottom of the sea and works in the vertical direction of sea waves. The experiment results show that, for the received voltage and current, the power of the electrical generator is up to 300 W and operates stably at about 200 W during experiment at sea. The output voltage is at 220 VAC frequency 50 Hz and is a pure sine wave. | Vietnam Journal of Science and Technology 55 (6) (2017) 780-792 DOI: FABRICATION AND EXPERIMENT OF AN ELECTRICAL GENERATOR FOR SEA WAVE ENERGY Nguyen Van Hai*, Nguyen Dong Anh, Nguyen Nhu Hieu Institute of Mechanics, Vietnam Academy of Science and Technology 264 Doi Can Str., Ba Dinh Dist., Ha Noi * Email: nguyenvanhai1977@ Received: 30 December 2016; Accepted for publication 5 September 2017 Abstract. This paper presents some results of fabrication and experiment of an electrical generator for sea wave energy. The electrical generator device is fixed on the bottom of the sea and works in the vertical direction of sea waves. The experiment results show that, for the received voltage and current, the power of the electrical generator is up to 300 W and operates stably at about 200 W during experiment at sea. The output voltage is at 220 VAC frequency 50 Hz and is a pure sine wave. Keywords: renewable energy, sea wave energy, electrical generator. 1. INTRODUCTION According to calculations by scientists, the received energy from fossil fuels will become gradually exhausted, and now therefore looking for new energy sources is requisite. For Vietnam, the 2020 target is to become a country in which marine economics will constitute over 50 % of GDP. Therefore, the energy demand supplying for general economics and particular marine economics is very important. The research and fabrication of electrical generators for sea wave energy are necessary. Moreover, the electrical energy received from sea wave energy conversion is friendly to environment, almost endless and is a clean energy source. The sea wave energy is an important energy source of the world as well as Vietnam in the future. In this paper, we present some results of designing, fabrication and experiment of the electrical generator at the sea with the output voltage being 220 VAC frequency 50 Hz and being pure sine wave. The electrical generator can be used for signal .
