Title:
ELECTROMAGNETIC DEVICE HAVING COMPACT FLUX PATHS FOR HARVESTING ENERGY FROM VIBRATIONS
Document Type and Number:
WIPO Patent Application WO/2010/091156
Kind Code:
A3
Abstract:
Electrical energy is produced by harvesting mechanical energy in the form of vibrations which are generally present in tools during the process of drilling oil wells.. Electrical energy production is based on the Faraday induction principle whereby changes, i.e., movement, in magnetic flux through a coil induce an electric current through the coil. The changes in magnetic flux are produced by relative motion between at least one set of magnets and at least one coil. In particular, as the flux lines change due to the movement of the magnets, they remain perpendicular to both the direction of motion of the magnets as well as a planar or cylindrical surface defined by the coils. As a result, output for a given size of device is enhanced. Further, flexibility in adapting device form factor to particular shapes is enhanced. For example, a relatively flat device may be implemented using flexural bearing support of the magnets and coils on a printed circuit. The flexural bearings may also function as spring members that define the resonant frequency of the device. Alternative embodiments may be characterized by cylindrical or annular form factors.
Inventors:
PABON JAHIR (US)
GUERRERO JULIO (US)
SIHLER JOACHIM (GB)
TRIMBLE ZACHARY (US)
LANG JEFFREY (US)
SLOCUM ALEX (US)
MA HONGSHEN (CA)
GUERRERO JULIO (US)
SIHLER JOACHIM (GB)
TRIMBLE ZACHARY (US)
LANG JEFFREY (US)
SLOCUM ALEX (US)
MA HONGSHEN (CA)
Application Number:
PCT/US2010/023157
Publication Date:
December 02, 2010
Filing Date:
February 04, 2010
Export Citation:
Assignee:
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
MASSACHUSETTS INST TECHNOLOGY (US)
PABON JAHIR (US)
GUERRERO JULIO (US)
SIHLER JOACHIM (GB)
TRIMBLE ZACHARY (US)
LANG JEFFREY (US)
SLOCUM ALEX (US)
MA HONGSHEN (CA)
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
MASSACHUSETTS INST TECHNOLOGY (US)
PABON JAHIR (US)
GUERRERO JULIO (US)
SIHLER JOACHIM (GB)
TRIMBLE ZACHARY (US)
LANG JEFFREY (US)
SLOCUM ALEX (US)
MA HONGSHEN (CA)
International Classes:
H02K35/02; H02K35/00; H02K35/04
Foreign References:
| JP2008259264A | 2008-10-23 | |||
| JP2002095237A | 2002-03-29 | |||
| JPH10323006A | 1998-12-04 |
Attorney, Agent or Firm:
LAFFEY, Brigid (Intellectual Property Law DepartmentOne Hampshire Stree, Cambridge Massachusetts, US)
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