Renewable energy generation in the urban environment has been receiving an increased attention over recent years due to the proximity with the point of use. Building integrated wind turbines are an interesting option in this respect. However, due to technical as well as architectural barriers,...

Vertical Axis Wind Turbine (VAWT) is relatively simple to implement in urban areas on ground or/and building-roofs, the development of appropriate design of VAWT will open new opportunities for the large-scale acceptance of these machines. The primary objective of this research was to design and...

Vertical Axis Wind Turbine (VAWT) is relatively simple to implement in urban areas on ground or/and building-roofs, the development of appropriate design of VAWT will open new opportunities for the large-scale acceptance of these machines. The primary objective of this research was to design and...

The need to further exploit offshore wind resources has pushed offshore wind farms into deeper waters, requiring the use of floating support structures to be economically sustainable. The use of conventional wind turbines may not continue to be the optimal design for floating applications....

The Savonius wind turbine appears to be particularly promising for low power applications, such as those in urban areas, and it can take advantage of a simple, reliable and cost-effective construction. Anyway, the Savonius wind turbine suffers from poor performance, when compared with other wind...

Since 1970 several aerodynamic prediction models have been formulated for the Darrieus turbine. We can identify two families of models: stream-tube and vortex. The former needs much less computation time but the latter is more accurate. The purpose of this paper is to show a new option for...

This study develops a wind speed sensorless performance monitoring method for stand-alone vertical axis wind turbines, by means of a numerical analysis using a dynamic simulation model. The method focuses on improvements in the response speed of the rotor with deterioration in wind turbine...

The vertical axis wind turbines are simple in construction, self-starting, inexpensive and can accept wind from any direction without orientation. A combined Savonius–Darrieus type vertical axis wind rotor has got many advantages over individual Savonius or individual Darrieus wind rotor, such...

A small high-solidity vertical axis wind turbine, with dielectric barrier discharge plasma actuators installed on the blade leading-edges, was built and tested in a low-speed wind tunnel. The main objectives were to assess turbine performance enhancements resulting from the control of dynamic...

The Wells wind turbine, which is used in the oscillating water column wave energy device, is simple but has a low efficiency. It stalls in strong winds caused by large waves and has a subsequent slow recovery. Its close relationship with the vertical axis wind turbine is pointed out. A novel...