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Renewable energy systems are playing an important role in the current discourse on energy security and sustainability. Scientific, engineering and economic solutions are adopted, and there is a constant effort to understand mechanisms and options to allow a faster penetration of renewable systems in the current energy mix and energy market. Readers of this book will have access to information, engineering design and economic solutions for harvesting local and regional energy potential by means of solar, wind, hydro resources. It will enable graduate students, researchers, promoters of sustainable energy technologies,consulting engineering experts, knowledgeable public to understand the solutions, methods, and techniques suitable for different phases of design and implementation of a large selection of renewable energy technologies, and to identify their sustainability in application and policy.
Introduction. I. Use of Renewable Energy - World, European and National Perspectives. 1. Recent Consumption of Primary Energy at World and National Levels. 2. Energy and Environment. 3. Renewable Energy and Sustainable Development. II. Solar Energy. 1. The Sun as Energy Source. 2. Solar Energy Potential. 3. Solar Energy Conversion Systems. III. Kinetical Energy of River Running Water. 1. Energy Potential. 2. Hydraulic Energy Conversion Systems. 3. Micro Hydroelectric Power Plant with Pintle and Blades with Rectilinear Profile in Normal Section. 4. Micro Hydroelectric Power Plant with Horizontal Axle and Helical Turbine. 5. Micro Hydroelectric Power Plant with Rotor's Pintle and Hydrodynamic Profile of Blades. IV. Wind Energy. 1. Wind as Energy Source. 2. Estimation of the Wind Energy Resources. 3. Statistics of Wind Climatology and the Wind Atlas. 4. Conversion of the Air Flow Kinetic Energy into Mechanical Energy - Betz Limit. 5. Evolution of Wind Technology Development. 6. Large Wind Turbines and Farms. 7. Evolution of Wind Technology Development. References. V. Permanent Magnet Generators (PMG) for Wind Turbines and Micro Hydro Turbines. 1. Technical Requirements Imposed to Electric Generators for Hydraulic and Wind Energy Conversion. 2. Synchronous Generators with Electric Excitation or Permanent Magnets. 3. Constructive Schemes of PMG. 4. Example of Wind Turbine PMG Design. 5. Permanent Magnet Generator as a Component Part of a Wind Turbine.