A stator for an electrical machine, in particular for an electromotive drive machine for an electric or hybrid vehicle, includes a stator core stack with a stator yoke and a number of radial stator teeth, as well as a corresponding number of stator slots, arranged between the stator teeth, for receiving a stator winding. A cooling apparatus has a number of cooling channels, each of which runs axially in one of the stator slots.

An electric motor includes: a case; a stator including a stator core disposed inside the case and a stator coil wound around the stator core; a rotor including a rotating shaft and being configured to rotate with respect to the stator; and an oil spraying part that is configured to store oil in a lower part of the case, that includes an oil passage configured to guide the oil to an upper area of the case and an oil pump for pumping the oil, and that is configured to spray the oil to an inner heating part of the case. Accordingly, the oil can suppress occurrence of short-circuiting of an electric circuit and rapidly cool a heating part.

A stator for an electric motor includes a substantially hollow-cylindrical stator stack provided with wire windings and an end winding, which adjoins the stator stack in the axial direction. The stator stack includes a number of slots, wherein a coolant line is inserted into the respective slot. To improve efficiency of the electric motor, a section of the respective coolant line extends into the region of the end winding.

In one embodiment, an advanced electric propulsion system comprises: a housing; an electric motor within the housing; a motor drive coupled to the motor; a thermal management system comprising: a manifold-mini-channel heat sink integrated into the housing, the manifold-mini-channel heat sink comprises: an inlet manifold having air inlets formed in front of the housing; a set of plurality of circumferentially grooved micro-channels formed in the housing and coupled to the air inlets and conductively thermally coupled to stator windings of the electric motor; an outlet manifold having an air outlets formed at a back of the housing and coupled to the set of plurality of circumferentially grooved micro-channels; wherein the electric motor comprises PEW stator windings that provide a low thermal resistance path from the stator of the electric motor to the housing; wherein the PEW stator windings comprise a high temperature tolerant thermally conductive electrical insulator.

An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.

An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.

A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

The invention relates to an electric machine (2) comprising a stator (2) and a rotor that can rotate relative to the stator (2), the rotor (3) having a plurality of permanent magnets (5), also comprising a rotor cooling device (8) for cooling the rotor (3), wherein the rotor cooling device (8) comprises at least one cooling device (23) for providing a cooling air flow, said rotor cooling device (8) comprises a control device (22) which is designed to control at least one cooling device (23) for adjusting a coolant power provided by the cooling air flow.

The invention relates to an electric machine (2) comprising a stator (2) and a rotor that can rotate relative to the stator (2), the rotor (3) having a plurality of permanent magnets (5), also comprising a rotor cooling device (8) for cooling the rotor (3), wherein the rotor cooling device (8) comprises at least one cooling device (23) for providing a cooling air flow, said rotor cooling device (8) comprises a control device (22) which is designed to control at least one cooling device (23) for adjusting a coolant power provided by the cooling air flow.