Piezoelectric generation of electrical power from surface waves on bodies of water using suspended weighted members
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
Feb 14, 1995
filing date -
Feb 14, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for converting the mechanical energy of ocean waves to electrical energy comprises a weighted member supported from a piezoelectric element for applying a preselected strain to the element. In one embodiment, the element is supported by a float floating on the surface of the water. In another embodiment, the element is supported above the surface of the water and the weighted member, of negative buoyancy, is immersed in the water. The system functions, in use, as an oscillating, weighted spring and, for tuning the system to cause it to enter into mechanical resonance in response to passing waves, means are provided for tuning the natural frequency of the oscillating system.
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