Provided is a rotating electrical machine in which torque ripple can be decreased at the time of one-side electrical current supply. A motor includes a stator coil constituted by concentrated windings arranged to teeth where an integer N2. The stator coil includes first and second winding units and each of which is constituted by windings and which are independent from each other, the windings constituting the first winding unit are arranged in three teeth groups, each of which includes adjacent teeth and which are provided at 120-degree pitches in terms of mechanical angle, and the windings constituting the second winding unit are arranged in teeth which are the teeth not included in the three teeth groups. That is, the windings constituting the second winding unit are also arranged in three teeth groups, which are provided at 120-degree pitches in terms of mechanical angle.

A rotational electric machine achieving both of productivity and insulation property is provided. A rotational electric machine includes an iron core having a plurality of slots, and a plurality of segment conductive bodies arranged in the slots, wherein the iron core includes a coil guide arranged at, at least, one of opening portions of the slots, and the coil guide includes a slot insertion portion located between the slot and the segment conductive body and at least one separation portion located between the segment conductive bodies, and the slot insertion portion and the separation portion are arranged in the slot together with the segment conductive body.

A DC motor with a one-way bearing applicable for driving various different electrical products includes a chassis, a motor shaft, a front output shaft and a rear output shaft. Front and rear one-way bearings are installed between the front end of the motor shaft and the inner end of the front output shaft and between the rear end of the motor shaft and the inner end of the rear output shaft and they are rotated in opposite directions. In a power output mode, the forward rotation of the motor shaft drives the front output shaft to rotate in a forward direction synchronously while the rear output shaft remains still, or the reverse rotation of the motor shaft drives the rear output shaft to rotate in a reverse direction synchronously while the front output shaft remains still.

A modular device that can operate as an electrical generator. First and second coil support plates are arranged in parallel orientation relative to each other forming a gap between the first and second coil support plates. Removable C-cores, each having wire coils, are removably attached to the first and second coil support plates. A rotor disc having selectively arranged magnets is disposed in the gap between the first and second coil support plates and is permitted to rotate about an axis that is perpendicular to the rotor disc and the parallel first and second coil support plates; a drive motor can power rotation of the rotor disc. As the disc rotates, electrical current is generated. The C-core assemblies can be interchanged, checked, removed and/or replaced while the electrical generator remains in operation without requiring cessation of such operation.

Embodiments of a modular motor assembly are disclosed. In some embodiments, a motor comprises a plurality of modular magnetic units, where each of the modular magnetic units includes at least one rotor and at least one stator. The motor further comprises a plurality of structural segments each adapted to support a stator of a corresponding one of the modular magnetic units, where each of the structural segments interlocks with a next structural segment to form a stack. A method of manufacturing a motor includes arranging a selected number of modular magnetic units, coupling the selected number of modular magnetic units to a shaft, coupling the selected number of modular magnetic units to respective structural segments, and forming electrical connections to apply three-phase voltage to stator windings of the modular magnetic units.

A stator module pack for an axial flux electric machine is provided. The stator module pack includes a housing for attachment to a stator base and a plurality of stator modules attached to the housing. Each stator module includes a core having at least one winding disposed thereon. A plurality of stator module packs is coupled to a stator base to form a stator of the axial flux electric machine.

An electric drive unit with an electric machine arranged in a motor housing. The electric machine has a rotor and a stator. A transmission is arranged in a transmission housing and driven by the electric machine. A cooling sleeve is provided, which forms a radially outward facing hollow space for a coolant by virtue of a spiral-shaped circumferential web between itself and the surrounding motor housing. Furthermore the cooling sleeve has a holding web which is designed to be clamped between two motor housing components.

A propulsion system assembly is provided including a driveshaft and a plurality of electric motor modules. The driveshaft is rotatably mounted to a casing about a drive axis, the driveshaft including a first shaft end and an opposite facing second shaft end. The plurality of electric motor modules are in axially stacked relationship with one another with respect to the drive axis to define an electric motor module stack, each electric motor module being configured for transmitting a torque to the driveshaft when coupled thereto independently of at least one other electric motor module. Each electric motor module includes a controllable clutch arrangement for selectively coupling and decoupling the respective electric motor module with respect to the driveshaft to respectively enable and disable transmission of torque between the respective electric motor module and the driveshaft.

Apparatus, systems, and methods for connecting components are described. The components may be drive controls and motors of pumps of water-circulation systems needing to be connected both mechanically and electrically. The connectors may be robust and have alignment, sealing, and keying capabilities.

A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.