Seabased Ab

Current Power Sweden Ab

Swedish Seabased Energy Ab

Vertical Wind Ab

Electric Line Uppland Ab

Swedish Vertical Wind Ab

Mats Leijon

Hans Bernhoff

Rafael Waters

Andrej Savin

Erik Doré

Magnus Rahm

Erland Strömstedt

Stefan Gustafsson

Fredrik Axelsson

Karin Thorburn

Erik Segergren

Robert Leandersson

Cecilia Bostrom

Magnus Stälberg

Kalle Haikonen

Mikael Eriksson

Bjorn Bolund

Magnus STÅLBERG

Cecilia BOSTRÖM

The invention relates to a wave power unit with a floating body (), a submerged station () and flexible connection means () connecting the floating body () to the submerged station (). The submerged station () has a stator() and a moving part (). According to the invention the flexible connection means () is provided with a damper (). The damper () is arranged to absorb tensile forces in the flexible connection means (). The invention also relates to a use of such a wave power unit and to amethod for producing and supplying electric energy.

Wave power unit, a use of a such and a method of producing electric energy

The invention relates to a stator frame () for a submerged linear generator. According to the invention the stator frame () includes a cylindrical tube of metal with mounting means () for mounting stator packages to the inside wall of the tube. The stator frame () also is the external circumferential wall of the linear generator. The invention also relates to the use of such a stator frame () and to a method for manufacturing a linear generator with such a stator frame ().

Stator frame for a submerged linear generator

The invention relates to an electric device with a winding () and means for inducing a current in the winding. A bridge circuit () electrically connects the winding () to a load (). According to the invention the bridge circuit () includes capacitor means (), which is adapted for obtaining resonance with the impedance of the winding ().

Electric device and a method for a wave power plant

The invention relates to a hydropower plant including a water turbine submerged in a water current, A grating is located adjacent the water turbine. According to the invention the grating is arranged to guide the water flow in the water current such that the velocity of the water between the grating and the water turbine becomes non-uniform. The invention also relates to a use of the hydropower plant for generating electric energy for supply to an electric network. Further the invention relates to a method for operating a hydropower plant.

Hydropower plant provided with a grating and method for operating a such

The invention relates to a wave power unit having a submerged station anchored on the sea bottom, a floating body floating on the sea surface and flexible connection means () connecting these. The submerged station has a linear generator with a reciprocating translator. According to the invention, the station includes a guiding device () for the flexible connection means (). The guiding device () has a plurality of rotatable rollers (-). The rollers (-) form a passage for the flexible connection means (). The invention also relates to use of the wave power unit and to a method for producing electric power.

Wave power unit with guiding device

The invention relates to a wave-power unit with a floating body () connected by flexible connection means () to a translator () reciprocating in a linear generator (), The floating body () is arranged for floating on the sea and the stator () of the generator for anchoring on the sea bed, According to the invention the connection means is guided by a guiding device () through lower and upper openings, The part of the connection means () that momentary is within the guiding device () is thereby guided to be aligned with the translator movements adjacent the lower opening and to be allowed to be inclined adjacent the upper opening. The invention also relates to a use of the invented wave-power plant and to a method for producing electric energy.

Wave-power unit

The invention relates to a wave-power unit for the production of electric power. It comprises a floating body arranged for floating on the sea and an electric linear generator with a stator () and a reciprocating translator (). The stator () is arranged to be anchored in the bed of a sea and the translator () is connected to the floating body by connection means, The translator () is journalled in a plurality of roiling elements () such that a circumferential gap () is formed between the stator and the translator. According to the invention each rolling element () has an elasticity that is low enough to meet the condition that a change in the width (d) of the gap results in a change in the total force from the roiling elements () that is larger than the total magnet forces on the translator resulting from the change in width (d). The invention also relates to a use of the invented wave-power unit.

Wave power unit, and a use of a such

A wave power unit including a buoy, adapted to float on a water surface (), and a electric generator is connected to the buoy through connection means (). The buoy when floating on a water surface () and when seen in a direction perpendicular to the water surface has the shape of a closed loop enclosing a inner opening substantially free of elements related to the wave power unit.

Wave power unit, a buoy, use of a wave power unit and a method for producing electric energy

A system for generating electric energy from renewable energy sources such as waves includes a plurality of generator aggregates (-) arranged in the sea and a plurality of switchgears (-) arranged in the sea. Each switchgear (-) is connected to a plurality of the generator aggregates (-). A plurality of primary intermediate stations (-) are respectively connected to a plurality of the switchgears, and a secondary intermediate station () is connected to a plurality of the primary intermediate stations (-). The secondary intermediate station is also connected to a land based electric network. Switching means () is present for allowing selective connection to various locations () in the electric network.

System for generating electric energy

The invention relates to a wind-power unit having a turbine having a vertical turbine shaft (), an electrical generator () connected to the turbine and a vertical hollow supporting pillar () supporting the turbine. According to the invention the material of the supporting pillar is in all essentials wood. The invention also relates to a supporting pillar for such a wind-power unit, an electric mains connected to the wind-power unit, a use of the wind-power unit and a method for the manufacture of such a supporting pillar.

Wind-power unit, a supporting pillar therefore and a use thereof

The invention relates to a power storage system intended to transmit power to and from a driving system of a vehicle. A power storage having a stator provided with two windings and at least one rotor provided with a magnetic-flux generating device is comprised. The rotor is connected to a flywheel intended for storage of energy. The two windings of the stator are arranged for high and low voltage, respectively. The power storage is arranged to transmit power to and from the electric apparatus as well as store energy transmitted from the electric apparatus in the flywheel.

Power storage system with low voltage and high voltage windings for a vehicle driving system

An assembly includes a water turbine and a rotary electrical generator, the rotor of which is connected to the turbine. The turbine has at least three axially directed blades, each blade being individually directly connected to the rotor of the generator.

Assembly comprising a water turbine and a generator, the rotor of which is direct-connected to each one of the blades of the turbine

The invention relates to a wave power assembly having a hull and a linear electric generator. The rotor of the generator is connected with the hull. The stator thereof is arranged to be anchored at a sea/lake bottom. According to an embodiment of the invention, the rotor is mounted in the cross direction by means of rolling elements. These are arranged between rolling surfaces on the rotor and support surfaces of a support means. The rolling elements are arranged to roll against the rolling surfaces and the support surfaces. The invention also relates to a wave power plant built up from wave power assemblies according to the invention. Furthermore, the invention relates to a use of the wave power assembly and a method for generating electric energy.

Wave power assembly

A wave power assembly comprising a hull and a linear electric generator. The rotor is connected to the hull and the stator is arranged to be anchored at a sea/lake bottom. The generator is provided with an electromagnetic damping means in order to keep the pulsations of the axial force exerted by the stator on the rotor at a relatively low level, which damping means comprises geometric arrangement adapted herefor of at least some one of the stator winding, the stator slots and the rotor magnets. The invention also relates to a wave power plant built up from wave power assemblies according to the invention. Furthermore, the invention relates to a use of the wave power assembly and a method for generation of electric energy.

Wave power assembly with an electromagnetic dampning means

A wave power assembly having a hull and a linear electric generator. The rotor is connected to the hull by connection means so that lifting force is transferred from the hull to the rotor. Spring means exert a force on the rotor that is counter-directed the lifting force. The spring means is arranged to, at a motion amplitude corresponding to 50% of the maximum length of stroke of the rotor, exert a force, the size of which varies by a factor of 2.5 as a maximum. The invention also relates to a wave power plant built up from wave power assemblies according to the invention. Furthermore, the invention relates to a use of the wave power assembly and a method for the generation of electric energy.

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Uppsala, Sweden

Mats Leijon