Aircraft electric motors include a motor unit having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path configured to direct flow of the working fluid through the drive unit and a separator arranged upstream of each of the liquid cooling path and the vapor cooling path and configured to direct a liquid portion of the working fluid into the liquid cooling path and configured to direct a vapor portion of the working fluid into the vapor cooling path.

An electric generator includes a stator and a rotor, the rotor being rotatable with respect to the stator about a rotation axis, an air gap being interposed between the stator and the rotor. The electric generator further includes a first liquid cooling circuit for cooling the stator, a liquid first coolant being circulated in the first liquid cooling circuit. The first liquid cooling circuit includes a first heat exchanger for exchanging heat between the first coolant and a second coolant being circulated in a second cooling circuit, the electric generator including at least a portion of the second cooling circuit.

An electric generator includes a stator and a rotor, the rotor being rotatable with respect to the stator about a rotation axis, an air gap being interposed between the stator and the rotor. The electric generator further includes a first liquid cooling circuit for cooling the stator, a liquid first coolant being circulated in the first liquid cooling circuit. The first liquid cooling circuit includes a first heat exchanger for exchanging heat between the first coolant and a second coolant being circulated in a second cooling circuit, the electric generator including at least a portion of the second cooling circuit.

An electrical motor can be selectively configured to operator between a number of different configurations to alter the cooling arrangement. The electric motor can include an enclosure aperture disposed through the motor enclosure that can be selectively sealed or opened by a removable cover plate. When the cover plate is installed, the electric motor can operate with a TEFC configuration in which an internal cooling circuit is isolated from an external fluid source. When the cover plate is removed, the internal airflow can thermally interact with an external airflow from an external fluid source.

An electrical motor can be selectively configured to operator between a number of different configurations to alter the cooling arrangement. The electric motor can include an enclosure aperture disposed through the motor enclosure that can be selectively sealed or opened by a removable cover plate. When the cover plate is installed, the electric motor can operate with a TEFC configuration in which an internal cooling circuit is isolated from an external fluid source. When the cover plate is removed, the internal airflow can thermally interact with an external airflow from an external fluid source.

In a first aspect of the invention there is provided a generator for a wind turbine defining a central generator axis. The generator includes a stator support frame and an environmental conditioning module removably attached to the stator support frame. The environmental conditioning module includes a heat exchanger and an air mover supported by a module housing. The environmental conditioning module further includes fluid interface connections associated with the heat exchanger, the fluid interface connections being releasably connectable to a fluid supply system associated with the heat exchanger, and electrical interface connections associated with the air blower, the electrical interface connections being releasably connectable to an electrical supply system associated with the air mover.

In a first aspect of the invention there is provided a generator for a wind turbine defining a central generator axis. The generator includes a stator support frame and an environmental conditioning module removably attached to the stator support frame. The environmental conditioning module includes a heat exchanger and an air mover supported by a module housing. The environmental conditioning module further includes fluid interface connections associated with the heat exchanger, the fluid interface connections being releasably connectable to a fluid supply system associated with the heat exchanger, and electrical interface connections associated with the air blower, the electrical interface connections being releasably connectable to an electrical supply system associated with the air mover.

A cooling system for an electric traction machine for a motor vehicle includes a looped conduit system for conducting a first cooling liquid and a circulation pump for conveying the first cooling liquid in the looped conduit system in a first circulation direction. The system further includes an expansion tank filled at least partially with the first cooling liquid and at least partially with a gas and a motor input terminal for fluidically connecting the looped conduit system on an input side to an electric traction machine to be temperature-controlled. The system further includes a motor output terminal for fluidically connecting the looped conduit system on an output side to the traction machine and a first heat exchanger for dissipating heat from and/or supplying heat to the first cooling liquid. The expansion tank is configured with an aperture that is open to the environment.

A cooling system for an electric traction machine for a motor vehicle includes a looped conduit system for conducting a first cooling liquid and a circulation pump for conveying the first cooling liquid in the looped conduit system in a first circulation direction. The system further includes an expansion tank filled at least partially with the first cooling liquid and at least partially with a gas and a motor input terminal for fluidically connecting the looped conduit system on an input side to an electric traction machine to be temperature-controlled. The system further includes a motor output terminal for fluidically connecting the looped conduit system on an output side to the traction machine and a first heat exchanger for dissipating heat from and/or supplying heat to the first cooling liquid. The expansion tank is configured with an aperture that is open to the environment.

A parallel type integrated actuator is proposed. The actuator includes: a driving unit composed of a plurality of motors, each motor being stacked successively in a longitudinal direction of the driving unit, each motor having a stator fixed to a position outside the driving unit and a rotor positioned inside thereof, each motor rotating relative to each other; a plurality of shafts; a heat sink housing having a cylindrical shape formed around the outer surface of the driving unit, and having an inner circumferential surface thereof thermally connected with the plurality of stators and a plurality of flow paths formed on the outer circumferential surface thereof; and a blower fan installed on one end side of the driving unit, provided with a wing part disposed to be adjacent to one end side of the heat sink housing, wherein rotation generates convection for heat exchange.