A stator for an electric motor, including a stator ring with slots arranged on the inner or the outer circumference, wherein each slot accommodates a plurality of conductors extending along the slot and having a rectangular cross-section, each of which is covered by an insulation layer, wherein to form a channel through which a coolant can flow, the insulation layer of at least one of the conductors has at least one recess extending along the conductor.

A hybrid module housing includes a bulkhead. The bulkhead has a first radial channel for providing a clutch apply pressure, a second radial channel for providing a clutch cooling flow, and a third radial channel for providing a motor cooling flow. In an example embodiment, the third radial channel is arranged to be on a bottom half of the hybrid module housing when the hybrid module housing is installed in a vehicle. In an example embodiment, the first radial channel and the second radial channel are open at a radially outer surface of the bulkhead, and the third radial channel is sealed at the radially outer surface of the bulkhead. In an example embodiment, the third radial channel includes an axial passage open at a radial wall of the bulkhead.

A linear motor with high heat recovery efficiency that inhibits the rise in surface temperature is offered. The linear motor is disposed in a surrounding member (142) and facing a flow passage (142a) of a liquid for regulating temperature, and is provided with a coil unit (141) having at least a part thereof in contact with the liquid. The coil unit (141) is provided with a coil body (144), a mold layer (143) that covers the coil body and holds it in specific form, and a liquid protection layer (150) that covers the mold layer (143) and has liquid protection properties.

A vehicle electric machine may include a rotor. The rotor may cooperate with a stator including a core having an end face, and end windings extending from the end face. A cooling tunnel may encase the end windings, sealing against the end face at opposing sides of the end windings, and defining an inlet configured to receive coolant. The cooling tunnel may be arranged to contain the coolant during passage over the end windings and direct the coolant toward an outlet.

An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers.

Pump motor, with a crankcase, a pump head, and a containment shell, whereby the pump head with the containment shell defines a wet chamber and the containment shell with the crankcase defines a dry chamber, a permanent magnet rotor is rotatably mounted in the wet chamber around an axis, a wound stator and a printed circuit board are arranged in the dry chamber and the printed circuit board is located opposite to the containment shell bottom. The pump motor economically provides for a reliable heat dissipation with an increased heat dissipation capacity, from the printed circuit board into the medium which has to be transported, in the case of a pump motor of an appropriate kind.

A rotor includes a rotor core that has magnet-receiving holes in each of which is received a corresponding permanent magnet. The rotor core also has, for each of the magnet-receiving holes, first and second supporting portions. The first supporting portion supports a radially inner end portion of a first magnetic flux barrier-side face of the corresponding permanent magnet. The second supporting portion supports a radially outer end portion of a second magnetic flux barrier-side face of the corresponding permanent magnet. A second magnetic flux barrier-side end portion of a radially outer wall surface of the magnet-receiving hole is planar in shape and parallel to a radially outer side face of the corresponding permanent magnet. A second magnetic flux barrier-side end portion of a radially inner wall surface of the magnet-receiving hole is planar in shape and parallel to a radially inner side face of the corresponding permanent magnet.

A rotor includes a rotor core that has magnet-receiving holes in each of which is received a corresponding permanent magnet. The rotor core also has, for each of the magnet-receiving holes, first and second supporting portions. The first supporting portion supports a radially inner end portion of a first magnetic flux barrier-side face of the corresponding permanent magnet. The second supporting portion supports a radially outer end portion of a second magnetic flux barrier-side face of the corresponding permanent magnet. A second magnetic flux barrier-side end portion of a radially outer wall surface of the magnet-receiving hole is planar in shape and parallel to a radially outer side face of the corresponding permanent magnet. A second magnetic flux barrier-side end portion of a radially inner wall surface of the magnet-receiving hole is planar in shape and parallel to a radially inner side face of the corresponding permanent magnet.

Fault-tolerant four-phase electric drive systems are provided. One such system comprises: a rotary electric machine having a permanent magnet rotor and an alternate-wound stator having eight evenly-spaced coils arranged in pairs, each coil in each pair being separated by 180 degrees; a first phase (ΦA) comprising a first one of the coil pairs and a first phase drive circuit connected therewith; a second phase (ΦB) separated by +45 degrees from the first phase and comprising a second one of the coil pairs and a second phase drive circuit connected therewith; a third phase (ΦC) separated by +90 degrees from the first phase and comprising a third one of the coil pairs and a third phase drive circuit connected therewith; a fourth phase (ΦD) separated by +135 degrees from the first phase and comprising a fourth one of the coil pairs and a fourth phase drive circuit connected therewith; and a controller connected with the first, second, third and fourth phase drive circuits to control operation thereof.

An electric machine. The electric machine includes one or more face wound strips including a first strip. The one or more strips have a plurality of openings. The first strip has a plurality of turns, and an opening of a turn of the first strip overlaps an opening of an adjacent turn, to form a portion of a fluid channel of a plurality of fluid channels. The turn and the adjacent turn abut against each other at the overlapping openings.