Implementering av vertikala vindkraftverk på lyktstolpar

Sammanfattning: Development of wind power has a high importance for the work of the EU Commission in the field of sustainable energy usage. This paper aims to investigate the possibility of implementing wind energy in new areas of application in Sweden. Horisontal axis wind turbines are dominating the wind turbine market today because of their high efficiency, but vertical axis wind turbines have been proven advantageous when implemented in urban areas. This work investigates the possibility of implementing small vertical axis wind turbines on lamp posts by highways in Sweden. This paper specifically focuses on the highway between Stockholm and Södertälje to examine the financial and physical limitations of the system to conclude how the wind turbine should be combined with complementing technique or further developed technically. The selection of models consists of the three wind power turbines Savonius, Darrieus and Giromill. A model for calculating the effect and profitability of the system is presented in the paper. The model transforms technical, surrounding and financial parameters to outcomes that reflects real scenarios. The model treats five different scenarios in this paper where the wind turbine is combined with batteries, solar panels and the possibility of selling energy surplus to the energy market. It therefore aims to create a foundation for the analysis of deciding which combination of techniques that can optimise the system. Based on the analysis of the scenarios, the system is optimised for two different purposes; to increase the amount of renewable energy production and to maximise the profitability of the project. To increase the usage of renewable energy, a system consisting of a Giromill turbine with a swept area of 2 m2 , a minimun effect coefficient of 30 % and a maximum cut in wind speed of 2,9 m/s. This system should be placed at a height of 2 m with the possibility of selling surplus energy to the energy market. It generates 900 MWh per year for the entire highway between Stockholm and Södertälje but is implemented without a yearly profit. If the purpuse is to maximise the profitability, the same Giromill turbine but with a swept area of 0,4 m2 placed at a height of 1,2 m is suggested. When combined with a solar panel, a battery and the possibility of selling surplus energy it can generate 450 MWh per year with a yearly profit of 5 %. If the costs are minimised this system can improve the profit to 10 % per year. In addition to a recommendation for the design of the system this paper also includes a suggested framework for implementing wind turbines in urban areas. It consists of the most vital guidelines the project has concluded. The factors of highest importance to investigate before implementing the system is: wind conditions at the highway, energy market conditions and costs of the system’s components, installation and maintenance