As wind power generation undergoes rapid growth, new technical challenges emerge: dynamic stability and power quality. The influence of wind speed disturbances and a pitch control malfunction on the quality of the energy injected into the electric grid is studied for variable-speed wind turbines...

This paper presents new integrated model for variable-speed wind energy conversion systems, considering a more accurate dynamic of the wind turbine, rotor, generator, power converter and filter. Pulse width modulation by space vector modulation associated with sliding mode is used for...

Innovation and Technology - Strategies and Policies contains a selection of outstanding contributions by world experts on how a culture of innovation is able to produce a response to fast global changes affecting society. The book describes major evolutionary directions and foreseen trends in:...

A simple, low-cost solar water heater has been developed for operation in Mediterranean Europe or regions of similar latitude (40-45° north). It takes the form of a trapezoidal-shaped water store in direct contact with an inclined flat-plate solar collector assembly. This cross-section...