Bluff body energy converter

Details Bluff body energy converter Bluff body energy converter

2007-05-29

2007-05-29

Waks, Joseph (Department: 2834)

Prime-mover dynamo plants

Miscellaneous

Drive gearing

Reexamination Certificate

active

11035253

ABSTRACT:
A power generating system comprises a bluff (non-streamlined) body placed in a fluid stream at ninety degrees to the flow direction for creating a von Karman vortex street behind the body. In the process, feedback forces are generated that excite the bluff body into oscillation. The bluff body oscillatory movements are coupled to and energize a power generator. An impedance matching system is employed for electrically varying the natural frequency characteristics of the bluff body such that, over a relatively wide range of fluid flow velocities, the bluff body oscillates at a resonant frequency of the body for maximum energy transfer from the fluid stream to the bluff body.

REFERENCES:
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patent: 5839508 (1998-11-01), Tubel et al.
patent: 6351999 (2002-03-01), Maul et al.
patent: 6976094 (2005-12-01), Dalrymple et al.
patent: 2005/0230973 (2005-10-01), Fripp et al.
patent: 2005/0230974 (2005-10-01), Masters et al.

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