Abstract: A power plant with at least one steam cycle and with at least one high temperature thermal energy (heat) exchange system is provided. The high temperature thermal energy exchange system includes at least one heat exchange chamber with chamber boundaries which surround at least one heat exchange chamber interior of the heat exchange chamber. The chamber boundaries include at least one inlet opening for guiding in an inflow of at least one heat transfer fluid into the heat exchange chamber interior and at least one outlet opening for guiding out an outflow of the heat transfer fluid out of the heat exchange chamber interior; at least one heat storage material is arranged in the heat exchange chamber interior such that a heat exchange flow of the heat transfer fluid through the heat exchange chamber interior causes a heat exchange between the heat storage material and the heat transfer fluid.

Abstract: Provided is a floating wind turbine including a hull, a wind turbine mounted on top of the hull and a counterweight suspended below the hull by a counterweight suspension is described. Also, a method for the installation is described. The counterweight includes one or more counterweight buoyancy tanks. When the internal volume of the buoyancy tanks is filled with air, the total buoyancy of the counterweight is close to or greater than its weight. Hereby it is capable of floating in a towing/maintenance position with moderate or no support in the vertical direction from the hull or other vessels. During towing, the hull substantially has the character of a barge, substantially relying on a large waterplane area and shallow draft to maintain stability.

Abstract: A sliding bearing arrangement for a wind turbine and a method to service the bearing is provided. A sliding bearing arrangement of a wind turbine includes a first shaft and a second shaft, whereby a first radial sliding bearing is arranged between the shafts. The first radial sliding bearing includes bearing pads. The first shaft includes a collar, whereby the collar is arranged mainly perpendicular to the axis of rotation, and radially overlaps at least a part of a radial surface of the second shaft. The collar includes an opening to exchange the bearing pads of the first radial sliding bearing of the bearing arrangement.

Abstract: An installation for storing thermal energy is provided. The storage is carried out by the compression and relaxation of a working gas, wherein pump and compressor can be driven by, for example, electric motors which temporarily absorb excess power generated in the power grid. The generated thermal energy is temporarily stored in a cold accumulator and a heat accumulator. According to the invention, a vapor circuit is provided to connect to the heat accumulator and the cold accumulator for discharging the installation, by which a turbine for generating electrical energy can be driven by a generator. Said circuit is implemented by means of another conduit system distinct from the circuit for charging the installation. Advantageously, thermal energy generated from overcapacities in the power grid can thus be reconverted with high yield into electrical energy via a vapor circuit.

Abstract: An arrangement and a method of rotating a hub of a wind turbine are provided. A wind turbine includes a hub mounted to a nacelle, whereby the hub is rotatable around an axis of rotation in respect to the nacelle. A rotor blade is arranged at the hub that leads to a torque around the axis of rotation of the hub. A counter weight is attached to the hub, whereby the counter weight has a mass that leads to a counter-torque around the axis of rotation. The counter-torque interacts with the torque during the installation of a second rotor blade to the hub. The counter weight is mounted to the hub by a mechanical arrangement that is rotatable in respect to the hub around the axis of rotation of the hub. The mechanical arrangement and the counter weight are rotatable in respect to the hub into a certain predetermined position.

Abstract: A power plant with at least one steam cycle and with at least one high temperature thermal energy (heat) exchange system is provided. The high temperature thermal energy exchange system includes at least one heat exchange chamber with chamber boundaries which surround at least one heat exchange chamber interior of the heat exchange chamber. The chamber boundaries include at least one inlet opening for guiding in an inflow of at least one heat transfer fluid into the heat exchange chamber interior and at least one outlet opening for guiding out an outflow of the heat transfer fluid out of the heat exchange chamber interior; at least one heat storage material is arranged in the heat exchange chamber interior such that a heat exchange flow of the heat transfer fluid through the heat exchange chamber interior causes a heat exchange between the heat storage material and the heat transfer fluid.

Abstract: A sliding bearing arrangement for a wind turbine and a method to service the bearing is provided. A sliding bearing arrangement of a wind turbine includes a first shaft and a second shaft, whereby a first radial sliding bearing is arranged between the shafts. The first radial sliding bearing includes bearing pads. The first shaft includes a collar, whereby the collar is arranged mainly perpendicular to the axis of rotation, and radially overlaps at least a part of a radial surface of the second shaft. The collar includes an opening to exchange the bearing pads of the first radial sliding bearing of the bearing arrangement.

Abstract: A charging system with a least one high temperature thermal energy exchange system is provided. The high temperature thermal energy exchange system includes at least one heat exchange chamber with chamber boundaries which surround at least one chamber interior of the heat exchange chamber, wherein the chamber boundaries include at least one inlet opening for guiding in an inflow of at least one heat transfer fluid into the chamber interior and at least one outlet opening for guiding out an outflow of the heat transfer fluid out of the chamber interior. At least one heat storage material is arranged in the heat exchange chamber interior such that a heat exchange flow of the heat transfer fluid through the heat exchange chamber interior causes a heat exchange between the heat storage material and the heat transfer fluid.

Abstract: A thermal energy storage and recovery device is provided including a container having a first fluid terminal for inserting heat transfer medium into the interior of the container and a second fluid terminal for extracting heat transfer medium from the interior of the container, a heat storage material for receiving thermal energy from the heat transfer medium when in a first operational mode and releasing thermal energy to the heat transfer medium when in a second operational mode, and a plurality of enclosures each filled at least partially with a part of the heat storage material. The enclosures are spatially arranged within the container so a flow of the heat transfer medium is guidable between the first and second fluid terminals and a direct thermal contact between the heat transfer medium and the enclosures is achievable as the heat transfer medium flows between the first and second fluid terminals.

Abstract: The arrangement directed to a generator, which contains a rotor and a stator us disclosed. The stator contains at least two stator segments. At least one of the stator segments contains a number of stacked laminate plates. The stacked laminate plates contain a number of slots at a first side, while the first side of the stacked laminate plates is aligned to the rotor. The slots support a metal-winding of a stator coil. At least one hollow cooling-pipe is partly integrated into the stacked laminate plates of the stator segment to cool its laminate plates by a cooling-medium, which is located into the cooling-pipes.

Abstract: An offshore support structure is provided, including at least one upper support structure section for supporting at least one functional device with a functional mass, at least one lower support structure section for founding the offshore support structure at a seabed of a sea and at least one transition support structure section which is arranged between the upper support structure section and the lower support structure section for physically connecting the upper support structures section and the lower support structure section. The lower support structure section forms a foundation of an offshore tower installation. With such an arrangement, it is possible that the transition support structure section is developed with a lower mass in comparison to an arrangement where the transition support structure section is in the water. The offshore tower installation is used for offshore wind power plants.

Abstract: A stator arrangement for an electric machine is provided. The stator arrangement includes a stator having a stator yoke with a number of stator slots, with each stator slot accommodating at least one set of stator windings and at least one cooling device in the shape of a duct-like pipe. The duct-like pipe is divided in two or more separate cooling channels.

Abstract: A tower for a wind turbine, the tower including a plurality of tower segments including a first tower segment and at least a second tower segment, a plurality of buttresses, and an attachment piece. The tower segments are arranged one upon the other from the base of the tower to the top of the tower. The attachment piece is arranged between the first tower segment and the second tower segment, and the buttresses are attached to the attachment piece, such that loads which are acting on the tower segments are partially carried by the buttresses. A wind turbine comprising such a tower is also provided.

Abstract: In a method for exhaust gas aftertreatment, in which an exhaust gas to be aftertreated, which is produced during combustion of a fuel, is treated with a reducing agent. A constituent of the fuel is hereby also used as a constituent of the reducing agent, with the constituent of the fuel which is also used as a constituent of the reducing agent being hydrogen. The hydrogen is produced from water, and the reducing agent is a mixture of hydrogen and ammonia.

Abstract: A nacelle shell structure which is attachable to a main structure of a wind turbine is described. The nacelle shell structure is attachable to the main structure such that the nacelle shell structure is carried by the main structure at only three static points. Moreover, a nacelle shell structure is provided which is attachable to a main structure of a wind turbine. The nacelle shell structure includes interconnected shell sub-structures. Furthermore, a lock-labyrinth for positioning between a rotating part with a rotation axis and stationary part of a wind turbine is disclosed, which includes a shield structure and a support structure, the shield structure being located radially outward of the support structure and protruding the support structure in axial direction. The shield structure includes a nose protruding radially inward and being located at an axial position where the support structure forms a water-tight channel which opens towards the nose.

Abstract: A thermal energy storage is provided comprising a housing, a thermal energy storage structure arranged within the housing, the thermal energy storage structure comprising thermal energy storage elements and a plurality of dividing elements, the plurality of dividing elements being arranged such that the thermal energy storage elements are divided into a plurality of layers, a fluid inlet, the fluid inlet being in fluid communication with the housing and adapted to receive a working fluid and provide a flow of working fluid towards the housing, and a convection reducing structure arranged adjacent the thermal energy storage structure at a side of the thermal energy storage structure that faces the fluid inlet. Furthermore, a method of storing thermal energy and a steam power plant for producing electrical energy are described.

Abstract: A magnet assembly for a rotor assembly of an electromechanical transducer includes a magnet component and a thermal insulating structure. The magnet component has a permanent magnet material. The thermal insulation structure covers at least a part of a surface of the magnet component for thermally decoupling the magnet component from heat being generated within electromechanical transducer. In an example embodiment, the electromechanical transducer is a generator of a wind turbine.

Abstract: A method is provided for replacing a permanent magnet of a generator of a wind turbine from a first position to a second position. A container is provided having a shell and an opening through the shell. The opening defines an open space for storing the permanent magnet. The open space is surrounded by the shell, and the shell having a thickness that provides that the permanent magnet does not come close enough to other magnetic material to exert significant force on it. The method involves placing the permanent magnet from the first position into the container, transporting the container with the permanent magnet to the second position, removing the permanent magnet from the container, and placing the permanent magnet in the second position.

Abstract: A wind turbine is provided. The wind turbine includes a generator including a rotor and a stator and a magnet mounting arrangement. The magnet mounting arrangement includes a magnet arranged along a surface of the rotor or stator, a pair of retainers arranged one on each side of the magnet, and an adhesive bonding the pair of retainers to the magnet and the magnet to the rotor or stator.

Abstract: A permanent magnet rotor arrangement includes a rotor and a plurality of nonmagnetic, axially extending profiled tubes defining a closed channel and affixed circumferentially along the outer rim of the rotor. A plurality of permanent magnet pole pieces are arranged in the channels. A single pole piece is arranged in each channel. The cross-sectional profile of the pole piece does not correspond to the cross-sectional profile of the channel.