Abstract: A cover device includes a terminal receiving portion and a terminal member while the terminal member is received in the terminal receiving portion. In the terminal member, a third wall connects between one end portion of a first wall, which is directed in an inserting direction of a motor terminal into the terminal receiving portion, and one end portion of a second wall, which is directed in the inserting direction. A length of the third wall, which is measured in a direction directed from a first connection between the first wall and the third wall to a second connection between the second wall and the third wall, is longer than a distance between the first connection and a second inner peripheral surface of the terminal receiving portion and is longer than a length between the second connection and a first inner peripheral surface of the terminal receiving portion.

Abstract: An externally excited electric machine may comprise a stator, a rotor, a primary winding, a secondary winding, and electronics. The rotor may be arranged coaxially to and/or in the stator. The rotor may be rotatable relative to the stator about a rotation axis running in an axial direction. The rotor may have a magnetizable hollow-cylindrical core. The primary winding may be guided axially through the core. An electric primary current may flow through the primary winding. The secondary winding may be wound around the core so that an electric secondary current is induced via the primary winding in the secondary winding. The electronic may be connect to the secondary winding for tapping the secondary current.

Abstract: In a rotating electric machine, a field element includes: a circular annular magnet portion that includes magnetic poles of which polarities alternate in a circumferential direction; and a cylindrical magnet holding portion where the magnet portion is fixed on an inner circumferential surface of the magnet portion. An armature is arranged to oppose the magnet portion on an inner side in a radial direction of the magnet portion. The magnet portion includes circular-arc-shaped magnets arranged in an array in the circumferential direction. In each magnet, both end surfaces in the circumferential direction are along the radial direction and in contact with a magnet adjacent in the circumferential direction. The magnet holding portion is reduced in size such that, in a state where the magnets are arrayed in the circumferential direction, an outer circumference of the magnets is reduced from an outer side toward an inner side in the radial direction.

Abstract: The rotating electric machine is provided with an inner ring fixed to a rotating shaft, an outer ring fixed to a base portion having a diameter larger than that of the inner ring, and a bearing that supports the rotating shaft. The base portion is provided with an insertion hole formed larger than the outer diameter of the outer ring, and the insertion hole accepting the rotating shaft penetrating therethrough. The outer ring is provided with an outer ring side flange portion protruding radially outside and being engaged with the base portion in the axial direction and fixed thereto. The outer ring side flange portion is provided in plural number in a circumferential direction at predetermined intervals. In the insertion hole, groove portions recessed radially outside at predetermined intervals in the circumferential direction is provided to fit with a shape of the outer ring side flange portion.

Abstract: A cooling system for an electric machine is provided that includes a housing at least partially enclosing a rotor, a stator, and a coolant jacket, the coolant jacket including a plurality of coolant channels that receive coolant from a coolant inlet. In the cooling system two or more materials that form boundaries of the plurality of coolant channels are configured to thermally expand at different rates and form a bypass flow passage of at least one of the plurality of coolant channels when the two or more materials are below a threshold temperature or within a lower temperature range.

Abstract: The invention relates to a method for operating a wind power plant, a wind power plant designed to carry out the method, and a corresponding computer program product. In the method for operating a wind power plant comprising a rotor having angle-adjustable rotor blades and a generator rotationally connected thereto and having a controllable torque, the torque of the generator is limited to a maximum value which is linked to the blade pitch angle of the rotor blades such that the maximum value at the switch-on blade pitch angle value is less than or equal to the rated torque value (MNenn) and the maximum value at a rated blade pitch angle which deviates from the switch-on blade pitch angle is equal to the rated torque value (MNenn).

Abstract: A motor includes a stator and a rotor. The stator has a coil unit and an iron core. The coil unit includes a plurality of coils and an insulator. The iron core includes a plurality of teeth. The rotor has a permanent magnet. The rotor is provided on an inner side of the stator to be rotatable around a shaft as a center with a gap being provided between the stator and the rotor. The rotor includes a plurality of segments divided in a rotation axis direction, the plurality of segments being rotatable relatively to each other such that a magnetic flux output from the rotor changes.

Abstract: A vertical wind turbine assembly includes a base positioned on the ground in an area known to experience windy conditions. A generator is positioned within the base and a shaft is mechanically coupled to the generator. A plurality of arms radiates outwardly from the shaft and a plurality of sets of blades is pivotally attached to a respective one of the plurality of arms. Each of the sets of blades is positionable in a deployed position or a stored position. A plurality of actuators is coupled between a respective one of the plurality of arms and a respective one of the plurality of sets of blades. A wind direction sensor is integrated into the shaft to indicate a direction of the wind. Each of the plurality of actuators is actuated to urge the respective blades between the deployed position and the stored position depending on the direction of wind.

Abstract: A drive device includes a motor, a control unit, a connector unit, a cover, and a seal member. The control unit is arranged coaxially with the motor and configured to control a drive of the motor. The connector unit connects the control unit to an external connector. The cover is a member separate from the connector unit and covers the control unit. The seal member is provided between the connector unit and the cover.

Abstract: A bandage for a rotor of an electrical machine that may be used in an electrical drive system of an aircraft is provided. The bandage, which serves to fix permanent magnets to the rotor, includes two rings, which are coaxial circular ring-like components, that are connected together by axial webs. The permanent magnets each have axial grooves on a surface of the respective permanent magnet facing the stator. The bandage is arranged on the rotor such that the permanent magnets lie between the rings, and the axial webs are positioned in the axial grooves. Since a thickness of the axial webs corresponds to a depth of the axial grooves, the magnet surfaces and the surface of the bandage are flush with one another, such that the bandage requires no additional space in an air gap.

Abstract: Methods and systems are provided for electrical power distribution. In one example, a system includes plurality of electric consumers comprising one or more operating modes with different levels of power consumption, an energy storage and an electric machine arranged in the vehicle and configured to provide energy to the energy storage device or power to the electric consumers and torque to wheels of the vehicle, a power allocating device coupled to the energy storage device and the plurality of electric consumers, and a controller configured to maintain two indices for allocating power to the plurality of electric consumers, wherein a first index comprises a first power allocation strategy based on power from only the energy storage device and a second index comprises a second power allocation strategy based on power from the energy storage device and the electric machine.

Abstract: Provided is a compact and lightweight motor complex cooling system with compatibility in which by providing a structure that circulates internal air without introducing air from the outside, an air-cooled radiator used in the conventional air cooling scheme is unnecessary, and only a water-cooled radiator is required, contributing to miniaturization and weight reduction of a device, and the compact and lightweight motor complex cooling system can be installed in an existing motor, and thus has compatibility, and is configured by a combination of air cooling and water cooling using coolant, allowing direct cooling to the end coil windings and the front of shafts of a rotor and a stator and by air cooling, and has excellent cooling efficiency through water cooling.

Abstract: A device with a housing electrically conductive at least in regions, with an electrical circuit in the housing, with an electrically conductive connection between an electrically conductive region of the housing and the circuit, and with a holder made up of an insulator, which is arranged in the housing and to which at least parts and/or components of the electrical circuit are attached. At least one electrically conductive spring element, which is attached in or to the holder and which has a first end protruding beyond the holder and bearing against the housing with a spring force, is provided for establishing the electrically conductive connection between the electrically conductive region of the housing and the circuit.

Abstract: A containerised generator set comprises a generator arranged within a container having a first aperture through which cooling air is exhausted in use. A pair of first doors are arranged to pivot outwardly on either side of the first aperture, with a removable wall being removably mounted between the first doors and spaced apart from the body of the container by the first doors from its lower end region to its tipper end region in its mounted position. The removable wall and the first doors define an exhaust air duct which preferably includes a sound absorbent material. The exhaust air duct extends for at least most of a total height of the body of the container to attenuate noise from the generator. Exhausted cooling air flows upwardly from the open upper end of the exhaust air duct and away from the immediate operating environment.

Abstract: This disclosure is directed to a stator of a rotary electric machine. The stator includes a stator coil having a welding portion of segment conductors. Each of the segment conductors includes an exposed conductor wire portion. The exposed conductor includes a root portion adjacent to an insulating coating. A thickness of the insulating coating is 50 ?m or more. The predetermined amount of displacement is 1±0.4 times or 2±0.4 times the thickness of the insulating coating. A length of the transition portion is 0.5 times or more and 2 times or less of a thickness of the conductor wire.

Abstract: Provided is a stator for an electrical machine, in particular a generator of a wind turbine, wherein the cylindrical stator includes multiple similar stator segments, each stator segment constituting a fraction of the circumference of the stator and having at least one coil element and one pre-installed bus bar segment per phase provided to or by the electrical machine, wherein each bus bar segment is electrically connected to a coil element of the respective phase, wherein at least two circumferentially adjacent stator segments form a section and multiple subsets of an even number of radially opposing sections are respectively assigned to a connector at a respective connection position along the circumference of the stator, wherein in each section, segmented bus bars for each phase are provided by connecting bus bar segments of adjacent stator segments.

Abstract: The invention relates to a stator for an electric machine, comprising a plurality of rod conductors and a plurality of interconnection pieces. The interconnection pieces each have a curved shape, in particular the shape of a C, extending in the radial direction and about the axis of rotation of the stator; in order to form respective interconnection planes along the axis of rotation, each group of interconnection pieces is arranged in the region of at least one short end of the rod conductors of the associated group of rod conductors that are to be electrically connected. The invention further relates to a connection component and an electric machine.

Abstract: Disclosed is an apparatus According to the present invention, a new winding arrangement was developed to enhance the manufacturability of stators with large length to diameter ratio and small aperture diameters such as the ones designed and manufactured for downhole pumping applications. The rectangular conductors are pre-formed to a specific shape, nested together, and inserted into the stator slots. Once the conductors are inserted, additional bending and joining operations are required to complete the coils and phases. These operations can be either fully automatic or semi-automatic. The structure of the winding allows insertion of phase and phase to phase insulation after the joining operation is completed thus reducing the risk of damage to the insulation system during the joining process. The pre-formed winding due to its ability to nest by design results is very short end-turns compared to conventional winding.

Abstract: A circuit carrier for establishing mechanical and electrical connection for at least one (power) electronics component, having a carrier plate which has at least one passage hole, and at least one electrically and thermally conductive insert element which is arranged in the passage hole and has a first contact surface for establishing electrical and thermal connections to the component and a second contact surface, which faces away from the first contact surface, for establishing thermal connections to a cooling body. The insert element further forms a bushing and has a contact side face which is situated against the bushing and is designed for establishing an electrical and thermal connection to an electrical connecting element.

Abstract: Systems and methods for hoisting a top drive of a drilling rig. An example system includes a hoisting system having a linear electric motor operable to raise and lower the top drive. An example method includes commencing operation of a processing device to cause operation of the linear electric motor to raise and lower the top drive. The linear electric motor may have a stator connected to and extending vertically along a mast of the drilling rig, and a rotor connected to the top drive and operable to move relative to the stator. The rotor may be connected to the top drive via one or more flexible lines.