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.

An electrical machine, particularly for driving a vehicle, comprises a rotor having a rotor shaft extending in the axial direction, a stator encompassing the rotor, and a stator housing that accommodates the stator and has an integral cooling duct. The cooling duct is formed by an alternating sequence of channels extending in the axial or circumferential direction and deflector portions which connect adjacent channels in a meandering fashion.

A motor includes a frame defining an internal volume in which are housed a rotor and a stator; at least one cooling circuit, which includes a primary inlet and a primary outlet in fluidic communication with the outside of the frame; at least one cooling device outside the frame, which includes a secondary air inlet and a secondary air outlet, and a conduit; at least one secondary cooling circuit, separate from the primary circuit, crossing the rotor and in fluidic communication with the secondary inlet and the secondary outlet of the cooling device. The secondary cooling circuit is crossed by a channel of the primary cooling circuit supplying the stator with the gas fluid from the outside of the frame.

A motor includes a frame defining an internal volume in which are housed a rotor and a stator; at least one cooling circuit, which includes a primary inlet and a primary outlet in fluidic communication with the outside of the frame; at least one cooling device outside the frame, which includes a secondary air inlet and a secondary air outlet, and a conduit; at least one secondary cooling circuit, separate from the primary circuit, crossing the rotor and in fluidic communication with the secondary inlet and the secondary outlet of the cooling device. The secondary cooling circuit is crossed by a channel of the primary cooling circuit supplying the stator with the gas fluid from the outside of the frame.

A turbine generator of the reverse-flow type having a rotor winding and a stator winding and a cooling duct, wherein the cooling duct is designed as a diffuser. The diffuser is designed such that a device is arranged on an internal cooling duct wall, which device prevents the flow of the cooling medium from stalling, leading to an improved, more uniform flow to a cooling apparatus.

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.

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.

An electric machine including a housing defining a longitudinal axis. A first plurality of fins coupled with an outer surface of the housing, wherein the first plurality of fins is positioned parallel with the longitudinal axis. A second plurality of fins coupled with the outer surface positioned transverse to the longitudinal axis, wherein at least a portion of the second plurality of fins is located axially adjacent to the first plurality of fins. A third plurality of fins coupled with the outer surface, wherein at least a portion of the third plurality of fins is located axially adjacent to the second plurality of fins and beside the first plurality of fins, wherein the third plurality of fins are positioned transverse to the longitudinal axis. A fourth plurality of fins coupled with the outer surface, wherein at least a portion of the fourth plurality of fins is located axially adjacent to the third plurality of fins and beside the second plurality of fins, wherein the fourth plurality of fins are positioned parallel to the longitudinal axis. A first fan assembly is located above at least a portion of the first and second pluralities of fins, and a second fan assembly is located above at least a portion of the third and fourth pluralities of fins.

An electric machine including a housing defining a longitudinal axis. A first plurality of fins coupled with an outer surface of the housing, wherein the first plurality of fins is positioned parallel with the longitudinal axis. A second plurality of fins coupled with the outer surface positioned transverse to the longitudinal axis, wherein at least a portion of the second plurality of fins is located axially adjacent to the first plurality of fins. A third plurality of fins coupled with the outer surface, wherein at least a portion of the third plurality of fins is located axially adjacent to the second plurality of fins and beside the first plurality of fins, wherein the third plurality of fins are positioned transverse to the longitudinal axis. A fourth plurality of fins coupled with the outer surface, wherein at least a portion of the fourth plurality of fins is located axially adjacent to the third plurality of fins and beside the second plurality of fins, wherein the fourth plurality of fins are positioned parallel to the longitudinal axis. A first fan assembly is located above at least a portion of the first and second pluralities of fins, and a second fan assembly is located above at least a portion of the third and fourth pluralities of fins.