Hydrodynamic control of wave energy devices / / Umesh A. Korde, South Dakota School of Mines and Technology, John V. Ringwood, Maynooth University [[electronic resource]]

• Autore: Korde Umesh A.
• Pubblicazione: Cambridge : , : Cambridge University Press, , 2016
• Descrizione fisica: 1 online resource (xv, 367 pages) : digital, PDF file(s)
• Disciplina: 621.31/2134
• Soggetto topico: Ocean wave power - Research; Hydraulic engineering - Research; Energy conversion - Research; Tidal power-plants - Research; Wave resistance (Hydrodynamics) - Research; Water-power - Research; Renewable energy sources - Research
• Persona (resp. second.): RingwoodJohn V.
• Note generali: Title from publisher's bibliographic system (viewed on 06 Sep 2016).
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Cover; Half-title; Title page; Copyright information; Table of contents; Preface; Acknowledgments; Part I Introduction; 1 Wave Energy Conversion; 1.1 Waves as Energy Carriers; 1.2 Nature of Wave Motion; 1.3 Regular versus Irregular Waves; 1.4 Wave Energy; 1.5 Primary Energy Conversion; 1.6 Secondary Energy Conversion; 1.7 Tail-Tube or Pneumatic Buoy; 1.8 Edinburgh Duck; 1.9 Contouring Rafts; 1.10 Submerged Cylinder; 1.11 Flexible Bag-Type Devices; 1.12 Omnidirectional Buoys; 1.13 Attenuator and Terminator Oscillating Water Column Devices; 1.14 Other Recent Sea-Tested Devices ; 1.15 Need for Control1.16 Conclusion; 1.17 Commonly Used Wave Energy Terminology; Part II The Basics; 2 Introduction to Control Engineering; 2.1 Techniques and Terminology; 2.2 Benefits and Pitfalls of Feedback; 2.3 Control Design; 2.4 State Space Modeling; 2.5 Challenges for Wave Energy Conversion; 2.6 Control of Wave Energy Devices; 2.7 Conclusion; 3 Bodies Oscillating in Air; 3.1 Power Absorption from an Oscillatory Force; 3.2 Control for Maximum Power Absorption; 3.3 Irregular Forcing; 3.4 Conclusion; 4 Bodies Oscillating in Water; 4.1 Oscillation Near Free Surface; 4.2 Regular Waves ; 4.3 Irregular Waves4.4 Conclusion; Part III The Hydrodynamics; 5 Nature of the Wave Input; 5.1 Description of a Harmonic Wave; 5.2 Description of Irregular Waves; 5.2.1 Probability Density Functions; 5.2.2 Stationarity and Ergodicity; 5.2.3 Power Spectral Density; 5.3 Group Behavior of Waves; 5.4 Wave Power as Rate of Energy Propagation; 5.5 Device Response in Irregular Waves; 5.6 Conclusion; 6 A Closer Look at Wave Energy Hydrodynamics; 6.1 A Body in Waves; 6.2 Beam-Sea Devices; 6.3 Producing Optimum Velocity; 6.4 Calculating the Average Absorbed Power; 6.5 Favorable Mode Combinations ; 6.5.1 Non orbital Motion of Body Centroid6.5.2 Orbital Motion of Body Centroid; 6.6 Omni directional Devices; 6.7 Head-Sea Devices; 6.8 Energy Absorption under Displacement/Velocity Constraints; 6.9 Oscillating Water Column Devices; 6.10 Device Arrays; 6.11 Conclusion; Part IV Velocity Control Using a Hydrodynamic Model; 7 Reactive Control in Time Domain; 7.1 Approaching the Hydrodynamic Optimum; 7.2 Control Force Synthesis; 7.2.1 Right-Shifting of Impulse Response Functions; 7.2.2 Wave Propagation and Future Information; 7.2.3 Approximate Evaluation of Control Force ; 7.3 Wave Prediction from Up-Wave Measurement Time History7.3.1 Propagation Impulse Response Function; 7.3.2 Up Wave Distance and Duration of Measurement; 7.4 Conclusion; 8 A Causal Real-Time Controller for Wave Energy Converters; 8.1 Introduction; 8.1.1 Model Definition; 8.1.2 Model Identification; 8.2 Real-Time Controller; 8.2.1 Maximum Wave Energy Extraction; 8.2.2 A Simple and Effective Realization of Reactive Control; 8.2.3 Constraint Handling; 8.2.4 Velocity-Tracking Control Loop; 8.3 Results; 8.3.1 Wave Data; 8.3.2 Performance in the Unconstrained Case; 8.3.3 Introduction of Constraints ; 8.3.4 Performance with Real Wave Data
• Sommario/riassunto: With this self-contained and comprehensive text, students and researchers will gain a detailed understanding of the fundamental aspects of the hydrodynamic control of wave energy converters. Such control is necessary to maximise energy capture for a given device configuration and plays a major role in efforts to make wave energy economic. Covering a wide range of disciplines, the reader is taken from the mathematical and technical fundamentals, through the main pillars of wave energy hydrodynamic control, right through to state-of-the-art algorithms for hydrodynamic control. The various operating principles of wave energy converters are exposed and the unique aspects of the hydrodynamic control problem highlighted, with a variety of potential solutions discussed. Supporting material on wave forecasting and the interaction of the hydrodynamic control problem with other aspects of wave energy device optimisation, such as device geometry optimisation and optimal device array layout, is also provided.
• Titolo autorizzato: Hydrodynamic control of wave energy devices
• ISBN: 1-316-71884-0; 1-316-72244-9; 1-316-72304-6; 1-316-72364-X; 1-316-72604-5; 1-316-72424-7; 1-139-94207-7
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910136606403321
• Lo trovi qui: Univ. Federico II