Abstract: The invention relates to a support structure (17) for a laminated core (9) of a stator segment (13) of a dynamoelectric machine having an external rotor, the support structure (17) having two joint plates (6) and two curved pressure plates (1), the respective longitudinal faces of which are in each case mutually opposed, and which encompass a predefinable space and can be connected at their abutting edges. The support structure also has substantially radial bars or ribs (3) between the pressure plates (1) and at least one element having polygonal cut-outs, which element is connected to a longitudinal face of the ribs (3) and forms a base plate of the support structure (17).

Abstract: A subsea assembly comprising an electric subsea machine having an electric motor driving an operator, and a coolant circuit at least partially located in thermal contact with the electric motor, the coolant circuit including a cooling assembly located externally from the subsea machine, the cooling assembly comprising at least a heat transfer element, the subsea machine and the cooling assembly being supported by a common supporting frame; at least a part of the heat transfer element is integrated in the frame.

Abstract: Disclosed is a suspension module for an electric motor inside a tubular casing of an electromechanical actuator, intended for a closure or sun protection system and including a monobloc suspension member. The suspension member extends along a longitudinal axis intended to be aligned with a rotation axis of a rotor of the electric motor. The suspension member includes multiple circular plates disposed perpendicularly to the longitudinal axis and adjacent to one another along the length of the axis, including at least one intermediate circular plate. Each intermediate circular plate is connected to each of the two plates adjacent thereto by at least three connection points.

Abstract: A technique for securing a group of stator packs that are part of a stator core to construction bolts associated with a generator frame. The technique includes using a single wedge set to secure the group of stator packs to each construction bolt. Each wedge set includes a solid filler piece positioned within a groove on one side of a notch in the stator pack and a construction bolt filler piece having a convex shape portion configured to the shape of the construction bolt that accepts the construction bolt. A wedge member is forced between the filler pieces to secure the group of stator packs to the construction bolt.

Abstract: A brushless starter-generator assembly includes a stator assembly, a rotor including a magnetic hub, the rotor disposed at least partially within the stator assembly and configured to rotate about an axis, and a field coil located radially outward from the rotor with respect to the axis.

Abstract: The present disclosure relates to wind power generation systems having a segmented stator with a structural element and a plurality of coils. The wind power generation systems also include a rotor adapted to be rotated by wind to induce current in the plurality of coils and a lamination stack having a plurality of lamination plates disposed about the plurality of coils and a dovetail recess formed in the lamination stack. The wind power generation systems also include a dovetail bar adapted to be received by the dovetail recess and adjusted by a bolt to engage the lamination stack and the structural element of the segmented stator to form a torque transfer interface. Torque is adapted to be transferred from the lamination stack to the segmented stator via friction at the interface.

Abstract: An electric machine and a stator assembly include a segmented stator having stator portions. Each stator portion includes end plates arranged axially on opposing sides of the stator portion, support plates arranged interior to the end plates, stator laminations arranged between the support plates, and stabilizing elements coupling the end plates and the support plates together. Each of the stabilizing elements has a dovetail portion coupled to the end plates and to the support plates. Connectors are provided to connect the stator portions of the segmented stator together.

Abstract: The keybar that is attached to the frame of a dynamoelectric machine is broken into a bald keybar with mini-dovetails attached to it. The bald keybar is identical to the bolt portion of a conventional keybar. The mini-dovetail is a trapezoidal or U-shaped strip with insulated slanted arms. The core packet is inserted loosely over an array of mini-dovetails. Devices such as wedges, threaded rods flex the slanted arm and press them against the slot faces of the core packet, thereby locking the core packet to the frame. Insulation on the slanted arms prevents large eddy currents due to shorted laminations, increasing the machine efficiency. Preventing large eddy currents also eliminates hot spots which could otherwise cause a core failure. Locking the core packets also prevents rattling of laminations. The locking method also distributes the torque forces evenly around the periphery.

Abstract: An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. A plurality of fluid flow passages extend through the rotor between opposite ends. An electro-magnetic drive system is adapted for driving rotation of the rotor relative to the stator. A fluid circulation system is in fluid communication with the fluid flow passages for providing fluid flow from the first end of the rotor to the second end of the rotor through at least one of the fluid flow passages and fluid flow from the second end of the rotor to the first end of the rotor through at least one other of the fluid flow passages. The rotor and components of the fluid circulation can be assembled to make a rotor assembly.

Abstract: An end plate for a generator includes an end plate generally cylindrical and having a central bore to receive a rotor shaft. The end plate has a radially inner boss and a radially outer boss. The radially outer boss is positioned radially outwardly of windings in a generator. The radially inner boss is positioned radially inwardly of the windings in a generator. A main core assembly, a rotor, and a generator incorporating the end plates are all disclosed and claimed.

Abstract: A stator core suspension includes a frame for supporting a stator core; a keybar coupled to a stator core section of the stator core; and a spring bar coupled to the frame and coupled to the keybar so as to be substantially aligned radially outboard of the keybar. A spring bar used in the stator core suspension may also include a substantially uniform cross-section throughout a length thereof, which may also be rectangular or round in cross-section.

Abstract: An integrated electric motor and controller assembly includes a motor, a controller mounted to the motor, and a sensor device disposed at an interface between the motor and the controller. The sensor device includes a sensor disposed at the controller and a magnet disposed at the motor. An alignment structure is provided at the interface between the motor and the controller for positioning the sensor relative to the magnet when the controller is mounted to the motor. The magnet is recessed in the motor and the sensor is protected by a controller housing of the controller. This arrangement has the advantages of protecting the sensor device from damage during shipment and assembly and providing a quick assembly and connection of the sensor device to the motor and the controller.

Abstract: Systems, methods, and apparatus for controlling key bar movement in a stator assembly are provided. According to one embodiment, a stator assembly is provided that includes multiple core ring compression bands longitudinally spaced apart and disposed around a stator core having a plurality of key bars radially spaced apart and extending longitudinally along a peripheral edge of the stator core. Each of the core ring compression bands can be formed from multiple semi-circular sections coupled to form the respective core ring compression band. Each of the key bars can be disposed within respective cutouts defined in an inner edge of the core ring compression bands.

Abstract: An electric motor assembly in a vehicle powertrain is provided with a generally annular stator fit within an interior cavity of the powertrain defined by a housing. Roll pins are fit between the housing and the stator. The stator may have a plurality of first geometric features and the housing a plurality of second geometric features. The first geometric features are be configured to align with the second geometric features when the stator is fit within the cavity, with the roll pins fit between the housing and the stator at the aligned first and second geometric features. A method of assembling the electric motor assembly is also provided.

Abstract: In a stator core support structure in a conventional rotating electric machine, it has been difficult to set the circumferential and radial stiffnesses with which elastic bars support a stator core, to appropriate values in view of a relationship between transmission of torque and vibration prevention. In order to solve the above problem, sectional shape of elastic support bars is formed as rectangular, elliptic, rhombic or the like, and accordingly, the ratio between circumferential and radial stiffness of the elastic support bars can be changed.