Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1995-02-14
1996-11-26
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310329, 290 53, 60497, H01L 4108
Patent
active
055788890
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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patent: 4685296 (1987-08-01), Burns
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Budd Mark O.
Epstein Michael Y.
Ocean Power Technologies, Inc.
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