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Wave energy converter

A converter and wave energy technology, applied in the direction of ocean energy power generation, machines/engines, engine components, etc., can solve the problems of high cost installation, low energy conversion efficiency, unreliability, etc., to reduce installation costs and low maintenance costs , easy maintenance effect

Inactive Publication Date: 2017-03-08
OKINAWA INST OF SCI & TECH SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these developments failed due to: (1) low energy conversion efficiency; (2) mechanical failure in storm conditions; (3) high cost of installation, thus not meeting economic needs; and / or (4) is an unreliable design for long-term operation

Method used

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Embodiment Construction

[0050]In one aspect, the present disclosure provides a turbine with suitably designed rotating blades for use in a wave energy converter (WEC) for harnessing ocean energy from currents in breaking waves into electricity. In some embodiments, a plurality of such turbines are installed alongside the shore such that the fore and aft flow of inshore waves close to the shoreline cause the blades to rotate, thereby making up a WEC system for power generation. Ocean waves are generally mixed with eddies and bubbles. Therefore, the turbine must operate inside a highly inhomogeneous multiphase flow. As the ocean wave approaches the shore, the forward motion of the crest becomes dominant. Because the bottom of the sea acts as resistance, the crest travels faster than the bottom, thus starting to break the wave. In at least some of the embodiments disclosed herein, this fast-running water slope has been used for surfing; here, the present disclosure uses it to generate energy.

[0051...

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Abstract

A wave energy converter system includes a plurality of wave energy converter units installed at or adjacent to a shoreline to receive water flows caused by ocean waves approaching the shoreline, each of the wave energy converter units including: a generator having a rotor shaft, the generator being configured to generate electricity in accordance with rotation of the rotor shaft; and a plurality of blades attached to the rotor shaft, the plurality of blades causing the rotor shaft of the generator to rotate in response to the water flows that impinge on the blades, thereby generating electricity; and a power conditioner installed onshore to receive the electricity generated by each of the plurality of wave energy converter units, the power conditioner providing consolidated electricity to an external power grid.

Description

technical field [0001] The present invention relates to wave energy converter systems, and more particularly to wave energy converter systems for converting near / onshore wave energy into electrical power. This application is hereby incorporated by reference in its entirety in US Provisional Application No. 62 / 024,790, filed July 15, 2014. Background technique [0002] In recent years, numerous efforts have been made to harness renewable energy from the earth as a supplement or alternative to existing energy sources. In particular, ocean energy such as offshore ocean wave energy, nearshore wave energy, and onshore wave energy have been intensively researched and developed. A review of wave energy technology can be found, for example, in the review article by Lopez et al listed below as Non-Patent Literature (NPL) 1 . [0003] As shown in NPL 1, for example, until recently, various types of wave energy converters were proposed and verified. Some of these use suspended bodie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/14
CPCF03B13/14F03B13/22F05B2210/404F05B2240/30F05B2240/311F05B2240/40F05B2240/91Y02E10/30
Inventor 新竹积
Owner OKINAWA INST OF SCI & TECH SCHOOL
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