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Energy harvesting system using flow-induced vibrations

United States Patent

February 11, 2014
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A system includes a housing disposed within a fluid having a fluid flow. A first member is located substantially external to the housing and is directly exposed to the fluid flow and lengthwise positioned transverse to the direction of the fluid flow. The first member is configured to vibrate independently of the housing responsive to direct exposure to the fluid flow. A coil is coupled to one end of the first member. The coil is disposed within the housing and shielded from direct fluid flow. A magnet is disposed within the housing separate from and adjacent to the coil. The magnet is shielded from direct fluid flow. Magnetic flux from the magnet induces an electric current through the coil responsive to relative motion between the magnet and the coil caused by vibration of the first member.
Liu; Wayne P. (San Diego, CA), Waters; Richard L. (San Diego, CA), Jazo; Hugo F. (San Diego, CA), Dick; Brian B. (San Diego, CA)
The United States of America as represented by the Secretary of the Navy (Washington, DC)
13/ 532,607
June 25, 2012
FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT The Energy Harvesting System Using Flow-Induced Vibrations is assigned to the United States Government and is available for licensing for commercial purposes. Licensing and technical inquiries may be directed to the Office of Research and Technical Applications, Space and Naval Warfare Systems Center, Pacific, Code 72120, San Diego, Calif., 92152; voice (619) 553-5118; email Reference Navy Case No. 101636.