Modular cooling assemblies are provided for simultaneously cooling both a power module and a vehicle motor. Each cooling assembly may include a first cooling structure defining at least one major surface in thermal communication with the vehicle motor. A second cooling structure may be provided, defining at least one major surface in thermal communication with a power module. An interlayer structure may be provided, configured to couple the first cooling structure to the second cooling structure. The first cooling structure, the second cooling structure, and the interlayer structure are positioned in a stacked arrangement and configured to provide a flow of coolant fluid from a fluid inlet defined in first cooling structure, through the interlayer structure, and to at least one heat sink feature of the second cooling structure. The coolant fluid is then directed through a fluid outlet defined in the second cooling structure.

In a first aspect of the invention there is provided a generator for a wind turbine. The generator comprises a stator which defines a central axis of the generator, the stator being mounted with-in a frame by a stator mounting system. The stator mounting system comprises a plurality of stator mounting modules, each stator mounting module being removably attached to the stator and removably attached to the frame. The stator mounting system is arranged so that one or more of the stator mounting modules can be replaced or repositioned with the stator mounted in situ within the frame.

A generator rotor assembly (42) comprises a cylindrical ring structure (46) defining a central hollow portion and arranged to rotate around a rotational axis. The cylindrical ring structure (46) comprises a plurality of permanent magnet packages (48) arranged coaxially around the rotational axis, the permanent magnet packages (48) comprising a plurality of coaxially stacked ring-shaped segmented layers (80), a plurality of tie rod holes (86) and a plurality of tie rods (54). The coaxially stacked ring-shaped segmented layers (80) comprise a plurality of contiguous segment sheets (82) arranged around the rotational axis to form the ring-shaped layer, the stacked layers (80) being staggered such that segment breaks between two contiguous segment sheets (82) in one of the layers are angularly offset with respect to segment breaks between two contiguous segment sheets (82) in an adjacent layer. The tie rod holes (86) extend axially through the layers of the permanent magnet packages (48), wherein the plurality of tie rod holes (86) of adjacent permanent magnet packages (48) are complementary in size and position, such that a plurality of tie rod bores is defined. The tie rods (54) extend through respective ones of the plurality of tie rod bores.

A high voltage electric machine and power distribution system including one or more of such electric machines are provided. In one aspect, a high voltage electric machine includes a stator, a rotor, and a housing encasing at least a portion of the stator and rotor. The stator is modularized into cascaded voltage stator modules. The stator modules are galvanically isolated from one another by intermodular separators. At least one intermodular separator is positioned between each adjacent pair of stator modules. The stator modules are also galvanically isolated from the housing by a housing separator. The housing separator is positioned between the stator modules and the housing. Each stator module has an associated set of windings that are wound only within their associated stator module.

Guide device for shuttles of a planar motor has a first end and a second end and defines a pose course of a shuttle between the first and second end. The first end, which defines an introductory pose of the shuttle, is arrangable on a first stator of the planar motor so that the introductory pose corresponds to an operationally controllable pose in relation to the first stator. The second end, which defines an exit pose of the shuttle, is arrangable on the first stator or a second stator of the planar motor so that the exit pose corresponds to an operationally controllable pose with respect to the first or second stator. The pose course includes at least one pose which is an operationally non-controllable pose with respect to stators of the planar motor. The guide device supports and stabilizes the shuttle in the at least one operationally non-controllable pose.

A generator rotor for a wind power plant, wherein the generator rotor has at least one dividing plane for dividing the generator rotor into at least two segments. The dividing planes extend in the generator rotor along asymmetrical section lines of the generator rotor. A generator stator for a wind power plant, a generator of a wind power plant, and a wind power plant and a method for transporting a generator.

A stator is provided for a permanent magnet synchronous motor. The stator includes a multiplicity of stator teeth, each stator tooth having a tooth axis. The stator further includes a stator ring with a stator axis, wherein the multiplicity of stator teeth is arranged radially along the circumference of the stator ring, and the tooth axes cross the stator axis orthogonally within one plane. The stator further includes a multiplicity of stator coils, each stator coil having a coil axis and a coil opening and including windings made of a wire, which windings extend along the coil axis, and the coil axis of the respective stator coil is arranged parallel to the tooth axis of the respective stator tooth and the coil opening of the respective stator coil surrounds the respective stator tooth, wherein the wire of the respective coil has a rectangular cross section with a shorter side and a longer side and the shorter side of the wire of the respective coil is orientated parallel to the coil axis of the respective stator coil.

A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.