A wind turbine is provided including at least one electric generator having at least one winding system, each winding system including a plurality of sub-winding systems, and a power converter system for connecting the plurality of winding systems to a fixed frequency AC or DC system, the power converter system including a plurality of power converter channels. Each of the sub-winding systems is galvanically isolated from the other sub-winding systems and is connected to at least one respective power converter channel. Each winding system includes at least one breaker for connecting one sub-winding system to another sub-winding system.

An electric motor (2) has a base motor module (3) and an electronic module (18) which is electrically and mechanically connected to the base motor module (3) and comprises an electronics housing (12). The base motor module (3) comprises a flange plate (8) which forms an interference fit with the electronics housing (12). The flange plate (8) may have an opening (36) with a circumferential collar (39) which engages in a fastening passage (35) of the electronics housing (12) and forms the interference fit with the electronics housing (12).

An electric machine is presented. The electric machine includes a hollow rotor; and a stator disposed within the hollow rotor, the stator defining a flow channel. The hollow rotor includes a first end portion defining a fluid inlet, a second end portion defining a fluid outlet; the fluid inlet, the fluid outlet, and the flow channel of the stator being configured to allow passage of a fluid from the fluid inlet to the fluid outlet via the flow channel; and wherein the hollow rotor is characterized by a largest cross-sectional area of hollow rotor, and wherein the flow channel is characterized by a smallest cross-sectional area of the flow channel, wherein the smallest cross-sectional area of the flow channel is at least about 25% of the largest cross-sectional area of the hollow rotor. An electric fluid pump and a power generation system are also presented.

A dual-output generator includes a first generator with a rotor, a second generator with a rotor, and first and second power converters. The rotor of the first generator is coupled to the rotor of the second generator for common rotation with the rotor of the first generator. The first power converter connects electrically to the first generator for converting rotation of the first generator rotor into direct current power. The second power converter connects electrically to the second generator for converting rotation of the second generator rotor into constant frequency alternating current power.

The electric machine comprises a rotor, a stator surrounding the rotor and a support structure. The stator has a longitudinal centre axis and is supported on the support structure with support elements. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator frame comprises two opposite end constructions and at least one frame plate located between the end constructions. A support element is located between each end construction and the adjacent frame plate and between adjacent frame plates. The support element is made of cast iron and attached to the end constructions, the frame plate and the support structure with fastening means based on a compression joint, whereby the stator frame becomes attached to the support structure via the support elements.

A support element for a support of a ring generator, in particular a stator support element for a stator support of a ring generator, and/or a rotor support element for a rotor support of a ring generator, wherein, to form the support, a number of support elements are assembled over a generator surface and which support is designed with an outer-circumferential supporting ring for the attachment of a winding and with an inner-circumferential supporting shoulder, in particular for linking up with a pin for connection to a bed plate. It is provided that the support element has: a leg, preferably a single leg in the form of a segment of a circle, which is assigned to a sector of an area of the generator surface and is designed for the assembly of the supporting ring, the leg being provided, in particular integrally, with the supporting shoulder that extends over part of the inner circumference, for attachment to a fully circumferential supporting flange, in particular the fully circumferential supporting flange being provided for linking up with a pin for connection to a bed plate, the supporting shoulder having a first fitting element and the supporting flange having a second fitting element, the first and second fitting elements being made to match one another, in particular as a female part and a male part.

A magnet track for a transport device for moving an armature along the magnet track includes a plurality of linear sections each having an even number of magnets of alternating polarity disposed on a support. In curved regions of the magnet track, the polarity of two adjacent magnets of different sections is the same. A ferromagnetic spacer disposed in each V-shaped gap in the curved regions of the magnet track between the different sections so as to fill the gap.

Certain embodiments are directed to devices, methods, and/or systems that use electrical machines. For example, certain embodiments are directed to an electrical machine comprising: at least one stator at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, wherein the at least one module is in spaced relation to the plurality of the magnets; and the at least one rotor being in a rotational relationship with the at least one stator, wherein the quantity and configuration of the at least one module in the electrical machine is determined based in part on one or more operating parameters; wherein the at least one module is capable of being independently controlled; and wherein the at least one module is capable of being reconfigured based at least in part on one or more of the following: at least one operating parameter during operation, at least one performance parameter during operation, or combinations thereof. Other embodiments are also disclosed.

Electric machine comprises a rotor and a stator surrounding the rotor. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator core is attached with fastening brackets by means of fastening means based on a compression joint to the stator frame. The stator frame comprises two opposite end constructions and a frame plate located between the end constructions. Back beams extending in the axial direction of the stator are attached to an outer surface of the stator core. Each fastening bracket comprises two perpendicular branches, a first branch attached to the stator frame plate and a second branch attached to the back beam by fastening means based on a compression joint. The fastening means passes through openings in each branch. The openings are allow a small movement of the fastening means in the openings so that the stator core can be centralized in a radial direction and in an axial direction in relation to the stator frame before the fastening means are tightened in order to lock the stator core to the stator frame.

A fluid circulating assembly includes a fan impeller having an inlet ring and a rear plate that define a central chamber. The fluid circulating assembly includes an electrical machine having a rotor assembly, a stator assembly, and a housing. The electrical machine is coupled to the rear plate of the impeller such that the electrical machine is positioned entirely outside the central chamber. The housing includes a plurality of fins on a side of the housing opposite the rear plate. The fins extend axially away from the stator assembly. The assembly includes a duct attached to the housing. The duct covers a portion of the fins and extends radially outward from the housing towards an outer edge of the rear plate. The duct is configured to channel air over the portion of the fins to facilitate cooling the electrical machine.