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1. (WO1997015876) POWER TRANSFER OF PIEZOELECTRIC GENERATED ENERGY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015876 International Application No.: PCT/US1996/016806
Publication Date: 01.05.1997 International Filing Date: 22.10.1996
IPC:
G05F 5/00 (2006.01) ,H01L 41/04 (2006.01) ,H01L 41/113 (2006.01)
G PHYSICS
05
CONTROLLING; REGULATING
F
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
5
Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02
Details
04
of piezo-electric or electrostrictive elements
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08
Piezo-electric or electrostrictive elements
113
with mechanical input and electrical output
Applicants:
OCEAN POWER TECHNOLOGIES, INC. [US/US]; Building A, Suite 1 1590 Reed Road West Trenton, NJ 08628, US
Inventors:
SMALSER, Paul; US
Agent:
SCHANZER, Henry, I.; 29 Brookfall Road Edison, NJ 08817, US
Priority Data:
08/546,59923.10.1995US
Title (EN) POWER TRANSFER OF PIEZOELECTRIC GENERATED ENERGY
(FR) TRANSFERT D'ENERGIE PRODUITE PAR UN DISPOSITIF PIEZOELECTRIQUE
Abstract:
(EN) The electric energy generated by a piezoelectric device PEG (10), when mechanically stressed, is transferred from the PEG (10) to a storage element (e.g., a capacitor (C1) or a battery) by selectively coupling an inductor (L1) in the conduction path between the PEG (10) and the storage element (C1). In one embodiment, the transfer of energy is optimized by allowing the amplitude of the electric signal to reach a peak value before transferring the electrical energy via an inductive network (L1) to a capacitor (C1) or a battery for storage. Electrically, the PEG (10) is operated without a significant loading (e.g., essentially open circuited) when the amplitude of the voltage generated by the PEG (10) is increasing. When the amplitude of the voltage has peaked, or reached a predetermined value, the electrical energy generated by the PEG (10) is coupled to an inductive-capacitive network (L1, C1) for absorbing and storing the energy produced by the PEG (10).
(FR) L'invention concerne le transfert d'énergie électrique produite par un dispositif piézoélectrique PEG (10) intervenant, suite à une contrainte mécanique, vers un élément d'accumulation (par exemle, condensateur (C1) ou batterie) par couplage sélectif d'une inductance (L1) dans le trajet de conduction entre le dispositif PEG (10) et l'élément d'accumulation (C1). Dans une variante, on optimise le transfert d'énergie en permettant à l'amplitude du signal électrique d'atteindre une valeur de crête avant de transférer l'énergie électrique par un réseau inductif (L1) vers un condensateur (C1) ou une batterie, aux fins d'accumulation. Du point de vue électrique, le dispositif PEG (10) fonctionne sans charge appréciable (par exemple, essentiellement en circuit ouvert) lorsque l'amplitude de la tension engendrée par ce dispositif (10) augmente. Lorsque l'amplitude de la tension a atteint la valeur de crête, ou bien lorsqu'elle a atteint une valeur préétablie, on couple l'énergie électrique produite par le dispositif PEG (10) avec un réseau inductif capacitif (L1, C1) afin d'absorber et de conserver l'énergie en question.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1996075178