This dissertation focuses on a small scale wind turbine in an urban environment. Significant under-performance had been suspected for some time, and this was confirmed by an examination of recorded data. The aim of the project was to identify the possible causes.
The initial investigation concentrated on a detailed examination of the roof-top site of the turbine and an adjacent weather station. From this, and a mapping of tall buildings in the immediate area, an indication of the likely effects of wind direction on turbine performance was obtained. However a detailed analysis of performance data revealed no discernible directional sensitivity.
Unfortunately the data sets available covered a very limited period and it was not possible to trace the history of the turbine’s performance since its installation. Recent records suggest that it is failing to reach the correct speed of rotation to produce its rated power. A number of possible causes are examined. The difficulties of monitoring and controlling wind turbines in an urban environment are discussed, and recommendations for remedial action in this particular case are made.