Skip to Content
Find More Like This
Return to Search

Submerged electricity generation plane with marine current-driven rotors

United States Patent

July 1, 2014
View the Complete Patent at the US Patent & Trademark Office
An underwater apparatus for generating electric power from ocean currents and deep water tides. A submersible platform including two or more power pods, each having a rotor with fixed-pitch blades, with drivetrains housed in pressure vessels that are connected by a transverse structure providing buoyancy, which can be a wing depressor, hydrofoil, truss, or faired tube. The platform is connected to anchors on the seafloor by forward mooring lines and a vertical mooring line that restricts the depth of the device in the water column. The platform operates using passive, rather than active, depth control. The wing depressor, along with rotor drag loads, ensures the platform seeks the desired operational current velocity. The rotors are directly coupled to a hydraulic pump that drives at least one constant-speed hydraulic-motor generator set and enables hydraulic braking. A fluidic bearing decouples non-torque rotor loads to the main shaft driving the hydraulic pumps.
Dehlsen; James G. P. (Santa Barbara, CA), Dehlsen; James B. (Santa Barbara, CA), Fleming; Alexander (San Francisco, CA)
Aquantis, Inc. (Santa Barbara, CA)
13/ 454,059
April 23, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under the terms of Grant No. DE-EE0002648 awarded by the Department of Energy. The Government has certain rights in this invention.