Sea wave energy is being increasingly regarded in many countries as a major and promising resource. The paper deals with the development of wave energy utilization since the 1970s. Several topics are addressed: the characterization of the wave energy resource; theoretical background, with especial relevance to hydrodynamics of wave energy absorption and control; how a large range of devices kept being proposed and studied, and how such devices can be organized into classes; the conception, design, model-testing, construction and deployment into real sea of prototypes; and the development of specific equipment (air and water turbines, high-pressure hydraulics, linear electrical generators) and mooring systems.

Wave energy utilization: A review of the technologies

The progress in wave energy conversion in Europe during the past ten years is reviewed and current activities and initiatives in the wave energy sector at National and Union level are described. Other important activities worldwide are summarized. The technical and econ

/pdf/wave-energy-in-europe-current-status-and-perspectives-29jovj6usk.pdf

Wave energy in Europe: current status and perspectives

Oscillating-water-column wave energy converters and air turbines: A review

Wave energy is substantial as a resource, and its potential to significantly contribute to the existing energy mix has been identified. However, the commercial utilization of wave energy is still very low. This paper reviewed the background of wave energy harvesting technology, its evolution, and the present status of the industry. By covering the theoretical formulations, wave resource characterization methods, hydrodynamics of wave interaction with the wave energy converter, and the power take-off and electrical systems, different challenges were identified and discussed. Solutions were suggested while discussing the challenges in order to increase awareness and investment in wave energy industry as a whole.

https://www.mdpi.com/1996-1073/11/5/1250/pdf

Ocean Wave Energy Converters: Status and Challenges

The utilization of renewable energy sources is a vital aspect for development of sustainability. Currently, an unexploited energy source is ocean waves. Various types of wave energy converters (WECs) are able to transform the motion of the waves into electricity. During the last 30 years, a wide range of prototypes was presented with different rates of success. The aim of this survey is to give an overview of how WECs are categorized [operation principle and power takeoff (PTO) system] and show what are the most important criteria that have to be kept in mind when designing a WEC. A few important WECs are described and evaluated.

Wave Energy Converter Concepts : Design Challenges and Classification

A review of impulse turbines for wave energy conversion

Performance of an impulse turbine with fixed guide vanes for wave power conversion

In o r d e r to deve lop a h igh performance impulse turbine for wave power conversion with air flow rectification system, the impulse turbine has been designed and investigated e x p e r i m e n t a l l y by mode l tes t ing. T h e n , the r u n n i n g a n d s t a r t i ng characteristics in irregular ocean waves have been clarified by a computer simulation, taking account of energy conversion efficiency of oscillating water column ( O W C ) . As a resul t , a suitable choice of design factors has been suggested for the set t ing angle of guide vane a n d the r o t o r prof i le . K E Y WORDS" Ocean wave energy, guide vane, impulse turbine, wave power conversion, f low rectifying air turbine N O M E N C L A T U R E Ac A t b CA CT di dm do f h h* I K l in P Q FR t t* • air chamber cross-sect ional area • turbine f low passage area • blade height • input coefficient (Eq. 3) • torque coefficient (Eq. 2) • width of passage at entrance • width of passage at mid-chord • width of passage at exit • f requency of wave under s inusoidal f low condit ion • height of O W C non-d imens iona l height of O W C h/H1/3 • moment of inertia of rotor • non-d imens iona l per iod = rnm/H1/3 • chord length of rotor blade • air chamber area ratio At /Ac • output • f low rate • mean radius • t ime • non-d imens iona l t ime under sinusoidal f low condit ion = t / T t *

H Maeda

Papers

A review of impulse turbines for wave energy conversion

Performance of an impulse turbine with fixed guide vanes for wave power conversion

Impulse Turbine For Wave Power Conversion With Air Flow Rectification System