A stator segment for an electric machine, in particular for a wind turbine generator is provided, the stator segment including a support structure, a lamination stack, and at least one fastening member for fastening the lamination stack to the support structure, wherein the lamination stack includes a plurality of lamination packets stacked between a drive end and a non-drive end, each lamination packet including a yoke having a plurality of teeth extending radially outwards on one side of the yoke and a connection structure formed at the side opposite the teeth, the connection structure being shaped to engage with the at least one fastening member in such a way that a part of the fastening member extends within the yoke. Furthermore, a stator, a wind turbine and a method of manufacturing are provided.

Apparatuses, systems and methods for implementing a downhole alternator assembly are disclosed. In some embodiments, a downhole alternator assembly comprises a casing; a turbine disposed within the casing and actuated by a drilling fluid flow; and a rotor disposed within the casing. The rotor includes a cylindrical rotor core rotated by the turbine; a plurality of permanent magnets disposed in the cylindrical rotor core; and a drilling fluid channel extending axially through the center of the cylindrical rotor core. The downhole alternator assembly includes a stator disposed within the casing. The stator includes a cylindrical stator core disposed concentrically between the cylindrical rotor core and the casing; conductor windings within the cylindrical stator core; and a plurality of radially distributed fluid channels extending axially within the cylindrical stator core between a front end of the cylindrical stator core and a back end of the cylindrical stator core.

A rotary electric device includes a first inverter circuit and a second inverter circuit which control the driving of a motor, and the driving of the motor is controlled by setting a phase of a carrier frequency of the first inverter circuit and a phase of a carrier frequency of the second inverter circuit as opposite phases. The motor includes a stator which includes a plurality of slots, a plurality of coils each of which is inserted into each of the plurality of slots, and a rotor which is provided to be rotatable relative to the stator. In the plurality of coils, one first coil connected to the first inverter circuit and one second coil connected to the second inverter circuit constitute one coil pair, and at least one coil pair is disposed in one slot.

An electric motor includes a rotor having a rotor shaft part and a first shaft part and a second shaft part. The rotor shaft is situated axially between the first and the second shaft parts. The first shaft part includes a first bearing seat and is connected to the rotor shaft part in a torsionally fixed manner, and the second shaft part includes a second bearing seat and is connected to the rotor shaft part in a torsionally fixed manner.

The present invention refers to an electric terminal assembly of a drive unit for use in a mining machine. The electric terminal assembly comprises a junction box configured to be mounted to the drive unit and a connecting element for communicatively connecting the junction box to a control device of the drive unit. The electric terminal assembly is configured to be convertibly arranged into at least two different configurations, each of which is associated to a different structural arrangement of the drive unit.

A linear motor connector system comprises a first linear motor, a second linear motor, and a first connector. The first connector includes a first plug holder electrically connected to the first linear motor and positioned in a recessed portion formed on an exterior face of a connecting portion of the first linear motor. The first connector further includes a first tab holder electrically connected to the second linear motor. The first tab holder is positioned in a recessed portion formed on an exterior face of a connecting portion of the second linear motor and faces the first plug holder along a direction of connection of the linear motors.

A brushless DC motor (BLDC) includes a stator having a ring-shaped body with multiple stator posts extending axially outward from the ring-shaped body. A plurality of stator windings are each wound about a corresponding one of the stator posts. A rotor support structure is positioned radially inward of the multiple stator posts. A rotor including a shaft is received in the rotor support structure. A first rotor disk is fixed to a first end of the shaft. At least a first set of magnets is disposed about the rotor disk and positioned radially adjacent to the stator posts such that the first set of magnets and the stator windings define a first radial flux flowpath. A second set of magnets positioned relative to the stator posts in one of an axial adjacency or a radial adjacency such that a second flux flowpath is defined.

A power conversion system comprising an electric machine and at least two power electronics converters, wherein the electrical machine comprises at least one current carrying component, wherein the current carrying component consists of at least two concentric rings forming the current carrying component. The at least two concentric rings are not galvanically or electrically connected to each other and each concentric ring is galvanically connected to at least one power converter via its machine side terminals.

An integrated motor linear actuator system includes one or more stator stages inside a housing. The stator stages have a winding and a stator core disposed about a common longitudinal axis, with a plurality of stator teeth configured to guide magnetic flux generated by the winding. A rotor is disposed along the longitudinal axis, within the stator stages, with a plurality of magnetic poles distributed circumferentially about the outer surface, adjacent the stator teeth, so that the stator stages are configured to drive the rotor into rotational motion about the longitudinal axis via the magnetic flux. A thrust tube and screw assembly are operationally coupled to the rotor, and configured to convert the rotational motion into linear motion of the thrust tube.

A wind turbine component includes an inner member and an outer member disposed relative to the inner member, wherein the inner and outer members move relative to each other. A plain bearing is coupled to one of the inner or outer member and configured to provide a fluid film for maintaining separation of and facilitating relative movement between the inner and outer members. A position adjustment mechanism is coupled to the one of the inner or outer member for selectively moving the plain bearing. A position controller may be operatively coupled to the position adjustment mechanism for controlling the position of the plain bearing. The wind turbine component may be a wind turbine generator with the inner member and outer member corresponding to one of the stator and rotor assemblies. Methods for controlling the generator are also disclosed.