A propulsion and electric power generation system includes a gas turbine propulsion engine, an electrical generator, an aircraft power distribution system, a plurality of auxiliary fans, and a controller. The gas turbine propulsion engine includes at least a low-pressure turbine coupled to a fan via a low-pressure spool, and the low-pressure turbine is configured to generate mechanical power. The electrical generator is directly connected to the low-pressure spool and generates a total amount of electrical power (Pe). The aircraft power distribution system receives a first fraction (Pa) of the total amount of electrical power. The auxiliary fans receive a second fraction (Pf) of the total amount of electrical power. The controller is configured to control a ratio of Pf to Pa (Pf/Pa) such that the ratio spans a range from less than 0.6 to at least 0.9.

A propulsion and electric power generation system includes a gas turbine propulsion engine, an electrical generator, an aircraft power distribution system, a plurality of auxiliary fans, and a controller. The gas turbine propulsion engine includes at least a low-pressure turbine coupled to a fan via a low-pressure spool, and the low-pressure turbine is configured to generate mechanical power. The electrical generator is directly connected to the low-pressure spool and generates a total amount of electrical power (Pe). The aircraft power distribution system receives a first fraction (Pa) of the total amount of electrical power. The auxiliary fans receive a second fraction (Pf) of the total amount of electrical power. The controller is configured to control a ratio of Pf to Pa (Pf/Pa) such that the ratio spans a range from less than 0.6 to at least 0.9.

In a motor device, a stator includes multiple coils that become electromagnets when energized. A rotor includes multiple permanent magnets facing one surface of each of the multiple coils and is provided rotatably with respect to the stator. A housing houses the stator and the rotor in a sealed manner and includes end spaces located respectively at both ends of a rotating shaft of the rotor and includes a cavity communicating with the end spaces and provided on the other surface side of the multiple coils. A fan makes a gas in the housing to flow through a cooling flow path constituted by a gap communicating with the end spaces and provided between the one surface of each of the multiple coils and the multiple permanent magnets, the end spaces, and the cavity.

In a motor device, a stator includes multiple coils that become electromagnets when energized. A rotor includes multiple permanent magnets facing one surface of each of the multiple coils and is provided rotatably with respect to the stator. A housing houses the stator and the rotor in a sealed manner and includes end spaces located respectively at both ends of a rotating shaft of the rotor and includes a cavity communicating with the end spaces and provided on the other surface side of the multiple coils. A fan makes a gas in the housing to flow through a cooling flow path constituted by a gap communicating with the end spaces and provided between the one surface of each of the multiple coils and the multiple permanent magnets, the end spaces, and the cavity.

The present invention relates to a rotor, and more particularly, to a rotor with increased cooling efficiency. According to the present invention, a rotor module may maximize a cooling effect by allowing cooling oil to flow inside a rotor to directly cool the rotor and directly cool a rotor heating unit, thereby stably implementing specifications requiring high power or a high current density, may be designed to scatter the cooling oil inside the rotor to the outside to cool areas around an end coil of a drive motor at the same time, and may reduce the number of pats by removing cooling parts for cooling the existing stator, thereby reducing costs.

The present invention relates to a rotor, and more particularly, to a rotor with increased cooling efficiency. According to the present invention, a rotor module may maximize a cooling effect by allowing cooling oil to flow inside a rotor to directly cool the rotor and directly cool a rotor heating unit, thereby stably implementing specifications requiring high power or a high current density, may be designed to scatter the cooling oil inside the rotor to the outside to cool areas around an end coil of a drive motor at the same time, and may reduce the number of pats by removing cooling parts for cooling the existing stator, thereby reducing costs.

A motor may include first housing installed with a stator and a rotor, and a second housing configured to form a refrigerant passage by being distanced from the first housing. When the second housing is coupled to the first housing, a first pipe is configured to introduce refrigerant into the refrigerant passage by communicating with the refrigerant passage, and a second pipe is configured to discharge the introduced refrigerant. A plurality of passage lugs are configured to be positioned at the refrigerant passage to flow the refrigerant in a zigzag manner.

A motor may include first housing installed with a stator and a rotor, and a second housing configured to form a refrigerant passage by being distanced from the first housing. When the second housing is coupled to the first housing, a first pipe is configured to introduce refrigerant into the refrigerant passage by communicating with the refrigerant passage, and a second pipe is configured to discharge the introduced refrigerant. A plurality of passage lugs are configured to be positioned at the refrigerant passage to flow the refrigerant in a zigzag manner.

This electric motor includes a frame defining an internal volume and comprising a rotor and a stator, a primary cooling circuit comprising at least one primary conduit and in fluidic communication with the outside of the frame for circulating a gas stemming from the outside of the frame in the internal volume of the frame, a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, wherein it comprises at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit.

This electric motor includes a frame defining an internal volume and comprising a rotor and a stator, a primary cooling circuit comprising at least one primary conduit and in fluidic communication with the outside of the frame for circulating a gas stemming from the outside of the frame in the internal volume of the frame, a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, wherein it comprises at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit.