Performance Modeling of Single Rotor And Contra Rotor For Offshore Wind Energy System
Abstract- Wind energy is one of the most promising solutions, especially considering its growth and technological
advancements. The use of wind energy for electricity generation is growing rapidly across the world and in India.
However, the geographical characteristics of the country along with the environmental restrictions imposed to these
projects create limitations to the exploit of the onshore wind resource and the best onshore wind spots are already
committed. So, the possibility of offshore wind farms in the India. Offshore wind farms also solve environmental
obstacles such as the selection and acquisition of land for a site. Generally faster wind speeds are observed in offshore
areas than in onshore areas. Therefore, for the development of offshore wind energy, is expected to be generated more
electricity with low expenditure by using contra rotor wind turbine for Offshore Wind Energy System. The aim of this
paper is to determine the feasibility of improving wind energy performance and reducing the weight by utilizing a contra
rotating wind turbine system. This kind of wind turbine has characteristic self-regulated on the speed due to the
difference torque between two stages horizontal axis wind turbine, than no need pitch controller to control the speed and
cut off the wind turbine due to the high wind speed. In this paper, the study of wind potential and weight estimation of
off-shore wind farms is calculated. For a site, the cost of energy is also calculated. For contra rotor the outcome of the
analysis is cost effective utilization of the offshore wind energy.