Abstract: Turbines, including fluid driven turbines, including wind turbines, do not always operate to their maximum capability due to sub-optimal selection of various possible parameters. Therefore there is industrial advantage in systems which can calculate, adjust or constrain such parameters in order to improve the productivity of turbines. New data also allows for new control methodologies. Such systems may be established through the provision of relevant data. The overall productivity of turbines may be improved, or increased, by extending the lifetime of the turbine, or by increasing the average power output during its lifetime, or reducing maintenance costs. One particular example of turbine under-performance has been observed by the present author for wind turbines operating in hilly terrain such as frequently found on Scottish wind farms but also in many locations around the world.

Abstract: A method of three-dimensional Doppler velocimetry applicable to turbines such as wind turbines achieves improved velocimetry by use of various possible convergent beam geometries and employing beam sources mounted on the turbine such as on a wind turbine nacelle, rotor hub or rotor blades.

Abstract: A method of three-dimensional Doppler velocimetry applicable to turbines such as wind turbines achieves improved velocimetry by use of various possible convergent beam geometries and employing beam sources mounted on the turbine such as on a wind turbine nacelle, rotor hub or rotor blades.