Hermann-Josef Wagner & Jyotirmay Mathur 
Introduction to Wind Energy Systems [PDF ebook] 
Basics, Technology and Operation

Wind Energy Today.- Wind: Origin and Local Effects.- Physics of Wind Energy.- Components of a Wind Energy Converter.- Design Considerations.- Operation and Control of Wind Energy Converters.- Economics and Policy Issues.- Outlook.

Hermann-Josef Wagner is Professor for Energy Systems and Energy Economics at the Ruhr-University of Bochum, Germany. He worked as a scientist for the Research Centre Juelich, for the German Parliament and for different universities. His relevant experiences are on the fields on energy systems analysis, renewable energies like wind energy and life cycle analysis. 
Dr.-Ing. Jyotirmay Mathur is a mechanical engineer postgraduate in energy studies from Indian Institute of Technology, Delhi, India; and doctorate from University of Essen, Germany. He specializes in the areas of renewable energy systems, energy policy modelling and energy efficiency. Working as Reader in the Malaviya National Institute of Technology in Jaipur, Dr. Mathur has been founder coordinator of the postgraduate program in energy engineering. He is involved with several committees of national importance in India.