Condition monitoring of a wind turbine is important to extend the wind turbine system's reliability and useful life. However, in many cases, to extract feature components becomes challenging and the applicability of information drops down due to the large amount of noise. Stochastic resonance...

This article summarizes the threats that wind farms pose to birds before surveying the recent literature on avian mortality and summarizing common methodological problems with such studies. Based on operating performance in the United States and Europe, the paper then offers a preliminary...

There is an increasing interest in, and concern over, the impact that the growing number of utility-scale wind farms are having on air supremacy and early warning missile detection in relation to radar clutter and shadow, seismic noise, and flight obstructions. This work focuses on US defence...

Positive advantages result from the variable speed operation of wind turbines connected to a power utility. Conventionaly thyristor based power interfaces have been used to achieve this and more recently IGBT based converters have shown advantages of improved power quality to the network. This...

Turbulence of the incoming wind field is of paramount importance to the dynamic response of wind turbines. Hence reliable stochastic models of the turbulence should be available from which time series can be generated for dynamic response and structural safety analysis. In the paper an empirical...

A mathematical model for fluid dynamics wind turbine design (based on the blade element momentum theory) has been implemented and improved. The mathematical simulations have been compared with experimental data found in the literature. The simulation was performed for the whole wind velocity...

This paper discusses some of the major research and development issues for small wind turbines whose upper power limit we take arbitrarily as 50 kW. The basis for the comparison is the mature technology available for large turbines which has yet to be fully diffused downwards. After defining and...

This paper investigates the possible site matching of the direct-drive wind turbine concepts based on the electromagnetic design optimization of permanent magnet (PM) generator systems. Firstly, the analytical models of a three-phase radial-flux PM generator with a back-to-back power converter...

Scaled wind turbine experiments were conducted in order to evaluate the beneficial effect of closely-spaced lateral wind turbine configurations on the performance of a wind farm. Two outer wind turbines were spaced apart with a particular gap distance and the longitudinal setback of a central...

Few methods are available for optimizing corrective maintenance and time-based maintenance for wind farms, although these strategies are currently widely used in practice. Economic dependencies exist among wind turbine systems and their components in the wind farm. That is, it may be more...