Prime-mover dynamo plants – Electric control – Tide and wave motors
Reexamination Certificate
2009-01-05
2011-12-27
Ta, Tho D (Department: 2839)
Prime-mover dynamo plants
Electric control
Tide and wave motors
C290S053000
Reexamination Certificate
active
08084873
ABSTRACT:
A wave energy conversion device that employs a submerged horizontally-aligned structure provided with a central opening formed in a horizontally extending surface, focuses wave induced water-particle motion, resulting in a flow into and away from the central opening, and a turbine is mounted in the central opening to be driven by this flow of water. Preferably the operation of this device occurs in a structural submerged depth of less than one-half wavelength of waves in the region. In a preferred embodiment, the flow through the central opening is bidirectional, and a self-rectifying turbine is used for unidirectional rotation. In an alternative embodiment, unidirectional check valves are used to direct water flow to a unidirectional turbine. Guide vanes are used to direct the flow inward towards the opening and can also be used to induce swirl in the flow field. When constructed axisymmetrically, the device can generate power from waves coming from any direction. The device may have multiple turbines arranged within it, or multiple units can be built into an array for power generation. The device may be mounted on supports fixed to the sea floor for shallow-water applications, or may be a floating submerged structure moored to the ocean floor for deep-water applications.
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Carter Richard W.
Ertekin R. Cengiz
Chong Leighton K.
Ta Tho D
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