Title :
Convert Low Frequency Energy from Wave Power Plant to High Frequency Energy in Linear Electrical Generator with Gas Springs
Author :
Ummaneni, Ravindra Babu ; Brennvall, Jon Eirik ; Nilssen, Robert
Author_Institution :
Dept. of Electr. Eng., Norwegian Univ. of Sci. & Technol., Trondheim
Abstract :
This paper describes the concept on conversion of the movement of a float in a wave power plant, characterize by high force and low speed energy, to a high speed and low force energy in linear machine by using gas springs. In a wave power plant the float is moving slowly. The buoyancy force on the float from the raising wave and the gravitational force on the float when the wave is sinking are enormous. This enormous force combined with the movement presents much concentrated energy. A linear electric generator which converts this low speed high force ocean wave energy into electrical energy by direct conversion i.e. piston in the generator is moving in the same way as the float, will not be cost effective due to its large size and expensive. The concept of converting slow movement (low frequency) of the ocean energy to a faster movement (high frequency) to reduce the size of generator by using double gas spring is presented.
Keywords :
AC generators; linear machines; wave power plants; buoyancy force; double gas spring; gravitational force; high frequency energy; linear electrical generator; linear machine; low force energy; wave power plant; Energy conversion; Frequency conversion; Generators; Hydraulic turbines; Ocean waves; Pistons; Power generation; Power system modeling; Springs; Storms; Ocean wave energy; frequency; gas springs; linear generator; wave energy conversion;
Conference_Titel :
Power System Technology and IEEE Power India Conference, 2008. POWERCON 2008. Joint International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-1763-6
Electronic_ISBN :
978-1-4244-1762-9
DOI :
10.1109/ICPST.2008.4745370