DE202009002859U1 - Device for direct conversion of kinetic wave energy into electrical energy by means of the piezoelectric effect - Google Patents

Device for direct conversion of kinetic wave energy into electrical energy by means of the piezoelectric effect Download PDF

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Publication number
DE202009002859U1
DE202009002859U1 DE202009002859U DE202009002859U DE202009002859U1 DE 202009002859 U1 DE202009002859 U1 DE 202009002859U1 DE 202009002859 U DE202009002859 U DE 202009002859U DE 202009002859 U DE202009002859 U DE 202009002859U DE 202009002859 U1 DE202009002859 U1 DE 202009002859U1
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energy
converter according
energy converter
support structure
direct conversion
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/188—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is flexible or deformable
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
    • F05B2240/311—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape flexible or elastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/407—Transmission of power through piezoelectric conversion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/70—Type of control algorithm
    • F05B2270/709—Type of control algorithm with neural networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

Vorrichtung zur direkten Wandlung kinetischer in elektrische Energie dadurch gekennzeichnet, dass eine mechanische Struktur wechselnde Kräfte auf Piezo-Elemente (2), die an der Trägerstruktur (1) angebracht sind, überträgt.Device for the direct conversion of kinetic into electrical energy, characterized in that a mechanical structure transmits alternating forces to piezo-elements (2) which are attached to the carrier structure (1).

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft eine Vorrichtung zur direkten Wandlung kinetischer in elektrische Energie, vorzugweise aus der vorhandenen Wellen- und/oder Gezeitenenergie der Weltmeere. Das Wirkungsprinzip beruht auf der Ausnutzung des piezo-elektrischen Effektes, der 1880 von Jacques und Pierre Curie entdeckt wurde. Piezo-elektrische Kristalle haben eine weite Verwendung in der Messtechnik, aber auch im täglichen Leben gefunden, z. B. als Zündmechanismus bei elektronischen Feuerzeugen.The The invention relates to a device for the direct conversion of kinetic into electrical energy, preferably from the existing wave and / or tidal energy of the oceans. The principle of action is based on the exploitation of the piezo-electric effect, the 1880 of Jacques and Pierre Curie was discovered. Piezoelectric crystals have a wide use in metrology, but also in everyday Found life, z. B. as a firing mechanism at electronic lighters.

Bei der erfindungsgemäßen Vorrichtung werden Piezo-Elemente im Bereich des größten Biegemoments einer Struktur gemäß 1 so aufgebracht, dass sie hohe mechanische Spannungen erfahren und dadurch elektrische Ladungen erzeugen, die gesammelt und mittels einer nachgeschalteten Elektronik in nutzbare Leistung umgewandelt und dem Netz zugeführt werden. Die mechanische Struktur wird biegesteif, jedoch demontierbar, mit dem Boden verbunden, z. B. mittels Bohrlöchern.In the device according to the invention piezoelectric elements in the region of the largest bending moment of a structure according to 1 so applied that they experience high mechanical stresses and thereby generate electrical charges that are collected and converted by means of a downstream electronics into usable power and fed to the network. The mechanical structure is rigid, but removable, connected to the ground, z. B. by means of boreholes.

Dabei werden die ständig wechselnden Kräfte der natürlichen Wellenbewegung im küstennahen Bereich auf die Struktur, die mechanisch gesehen einen einseitig eingespannten Biegebalken darstellt, ausgenutzt, wie in 2 und 3 dargestellt. Der obere Teil der Struktur ist als Prallfläche zur Aufnahme der Wellenenergie ausgebildet. Die mechanische Trägerstruktur kann alternativ auch als Torsionsstab mit entsprechend angepasster Orientierung der Piezo-Elemente ausgeführt sein.The constantly changing forces of the natural wave motion in the coastal area on the structure, which mechanically represents a cantilevered bending beam, exploited, as in 2 and 3 shown. The upper part of the structure is designed as a baffle for receiving the wave energy. The mechanical support structure may alternatively be designed as a torsion bar with a correspondingly adapted orientation of the piezoelectric elements.

Zum Schutz des Systems bei außergewöhnlich starker Seegang sind die Prallflächen so mit der Trägerstruktur verbunden, dass sie einfedern können und so die Kräfte begrenzt werden.To the Protection of the system with exceptionally strong Swell are the baffles so with the support structure connected, that they can deflect and so the forces be limited.

Der Vorteil der piezo-elektrischen Wandler-Vorrichtung besteht darin, dass kein mechanischer Energiewandler, wie eine Turbine mit angekoppeltem Generator, erforderlich ist. Dadurch wird das System praktisch wartungsfrei. Insbesondere werden, da es sich um ein vollständig umschlossenes, gekapseltes System handelt, schädliche Umwelteinflüsse wie maritimer Bewuchs, Verschmutzung durch Ablagerungen und Korrosion innerhalb des Systems ausgeschlossen. Dieser Gesichtspunkt ist insbesondere bei off-shore oder küstennahen Systemen von größter Bedeutung, da jegliche Wartung die Bergung des Systems erforderlich machen würde.Of the Advantage of the piezoelectric transducer device is that no mechanical energy converter, like a turbine with coupled Generator, is required. This makes the system virtually maintenance free. In particular, since it is a fully enclosed, encapsulated System is acting, harmful environmental influences such as marine growth, pollution by deposits and corrosion excluded within the system. This point of view is particular at off-shore or offshore Systems of the utmost importance, since any maintenance will require the recovery of the system would.

Claims (7)

Vorrichtung zur direkten Wandlung kinetischer in elektrische Energie dadurch gekennzeichnet, dass eine mechanische Struktur wechselnde Kräfte auf Piezo-Elemente (2), die an der Trägerstruktur (1) angebracht sind, überträgt.Device for the direct conversion of kinetic into electrical energy, characterized in that a mechanical structure changing forces on piezo elements ( 2 ) attached to the support structure ( 1 ) transmits. Energiewandler nach Anspruch 1, dadurch gekennzeichnet, dass die auf die mechanische Struktur ausgeübten Kräfte aus der Wellenbewegung natürlicher Gewässer entnommen wird.Energy converter according to claim 1, characterized in that that the forces exerted on the mechanical structure are due to the wave motion naturally waters is removed. Energiewandler nach Anspruch 2, dadurch gekennzeichnet, dass die mechanische Struktur mittels eines oder mehrerer Bohrlöcher am Boden (3) biegesteif, jedoch demontierbar, befestigt wird.Energy converter according to claim 2, characterized in that the mechanical structure by means of one or more boreholes on the ground ( 3 ) rigid, but removable, is attached. Energiewandler nach Anspruch 3, dadurch gekennzeichnet, dass die Trägerstruktur als einseitig eingespannter Biegebalken ausgebildet ist.Energy converter according to claim 3, characterized that the support structure is designed as a cantilevered bending beam. Energiewandler nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die Trägerstruktur alternativ als einseitig eingespannter Torsionsstab ausgebildet ist.Energy converter according to Claims 1 to 3, characterized that the support structure alternatively formed as a cantilevered torsion bar is. Energiewandler nach Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass die Trägerstruktur mit Prallflächen (4) versehen ist, die die Wellenenergie aufnehmen.Energy converter according to claims 1 to 5, characterized in that the support structure with baffles ( 4 ), which absorb the wave energy. Energiewandler nach Ansprüchen 1 bis 6, dadurch gekennzeichnet, dass die Prallflächen kraftbegrenzend mit der Trägerstruktur verbunden sind.Energy converter according to Claims 1 to 6, characterized that the baffles force limiting with the support structure are connected.
DE202009002859U 2009-02-28 2009-02-28 Device for direct conversion of kinetic wave energy into electrical energy by means of the piezoelectric effect Expired - Lifetime DE202009002859U1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022726A3 (en) * 2009-08-21 2011-11-24 Benson Robert A Marine energy extraction systems
DE102012106009A1 (en) * 2012-07-05 2014-01-09 Achim Humm Device for producing electrical power from sea waves, has fore region and aft region indirectly connected with sea bottom over fastening devices, which are provided with converter for converting tensile stress into electrical power
CN108999739A (en) * 2018-07-21 2018-12-14 季全 A kind of hydroelectric installation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022726A3 (en) * 2009-08-21 2011-11-24 Benson Robert A Marine energy extraction systems
DE102012106009A1 (en) * 2012-07-05 2014-01-09 Achim Humm Device for producing electrical power from sea waves, has fore region and aft region indirectly connected with sea bottom over fastening devices, which are provided with converter for converting tensile stress into electrical power
DE102012106009B4 (en) * 2012-07-05 2015-07-23 Achim Humm Apparatus for obtaining electrical energy from sea waves
CN108999739A (en) * 2018-07-21 2018-12-14 季全 A kind of hydroelectric installation
CN108999739B (en) * 2018-07-21 2022-04-15 季一全 Hydroelectric power generation device

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