An electric machine including a stator and a rotor configured to be driven in rotation in relation to one another, the rotor including a plurality of permanent magnets, the stator further including a magnetic circuit including poles extending toward the rotor, the machine including windings of conducting elements around each pole and at least one heat sink arranged inside a conducting element and/or between the conducting elements, the heat sink comprising a phase change material.

Stators (2) having teeth (4) and electrical windings (5) provided on the teeth (4), wherein the electrical windings (5) comprise graphene and/or carbon nanotubes, are already known. The electrical winding (5) of the stator (2) is produced in a winding process. The electrical winding (5) in the component of an electric machine according to the invention can be produced more easily, in particular further electrical phases can be built into the electrical winding (5) in a simpler and reproducible manner. According to the invention, the electrical windings (5) are each formed as a tubular fabric which encloses the tooth (4) to which it is assigned.

Stators (2) having teeth (4) and electrical windings (5) provided on the teeth (4), wherein the electrical windings (5) comprise graphene and/or carbon nanotubes, are already known. The electrical winding (5) of the stator (2) is produced in a winding process. The electrical winding (5) in the component of an electric machine according to the invention can be produced more easily, in particular further electrical phases can be built into the electrical winding (5) in a simpler and reproducible manner. According to the invention, the electrical windings (5) are each formed as a tubular fabric which encloses the tooth (4) to which it is assigned.

This disclosure discloses a rotating electric machine including a rotor and a stator. The rotating electric machine includes a stator core including a teeth part, and an air core coil. The air core coil is fitted to the teeth part. The air core coil includes curved end surfaces configured to approximately define a part of cylindrical shape at inner radial side and outer radial side. The air core coil includes approximately flat end surfaces at both circumferential sides and both axial sides.

This disclosure discloses a rotating electric machine including a rotor and a stator. The rotating electric machine includes a stator core including a teeth part, and an air core coil. The air core coil is fitted to the teeth part. The air core coil includes curved end surfaces configured to approximately define a part of cylindrical shape at inner radial side and outer radial side. The air core coil includes approximately flat end surfaces at both circumferential sides and both axial sides.

A segment for supporting electromagnetic coupling elements of a stator or rotor of an electrical machine comprises a plurality of elongate laminations which are stacked in a first direction to form a lamination stack with elongate edges of the laminations defining opposite first and second major faces of the lamination stack. The segment comprises a plurality of elongate compression devices passing internally through the lamination stack in the first direction and arranged to compress together the laminations in the lamination stack.

The present disclosure provides air cooling systems and methods for propulsion systems (e.g., aviation or aerospace propulsion systems). More particularly, the present disclosure provides integrated air cooling systems and methods utilizing air cycle machine cooling for hybrid-electric aircraft or aerospace propulsion systems or the like. The present disclosure provides integrated air cycle machine cooling into the hybrid propulsion system (e.g., into the wing-mounted hybrid propulsion system). As such, the air cooling systems and methods of the present disclosure can minimize weight while improving electric motor/generator cooling.

An electrical hollow conductor (1) in the shape of a tubular body (2) having a hollow interior (3) for continuously winding an electromagnetic coil, wherein the body (2) comprises an electrically conductive material, has an outside diameter and an inside diameter, wherein a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1, and is coated with an electrically insulating layer (4) on an outer casing surface of the body (2) and wherein the interior (3) is configured so that it hydraulically or pneumatically connects a first open end of the body (2) and a second open end of the body (2).

An electrical hollow conductor (1) in the shape of a tubular body (2) having a hollow interior (3) for continuously winding an electromagnetic coil, wherein the body (2) comprises an electrically conductive material, has an outside diameter and an inside diameter, wherein a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1, and is coated with an electrically insulating layer (4) on an outer casing surface of the body (2) and wherein the interior (3) is configured so that it hydraulically or pneumatically connects a first open end of the body (2) and a second open end of the body (2).

A core used in an axial-gap rotating electric device includes an annular back yoke and a plurality of teeth protruding in an axial direction that is perpendicular to a first flat surface of the back yoke. The plurality of teeth are provided on the first flat surface at intervals in a circumferential direction. The back yoke and the teeth are constituted of an integrally-molded powder compact. A first curved section that connects a peripheral surface of each tooth and the first flat surface of the back yoke is provided at a corner between the tooth and the back yoke. The first curved section has a curvature radius ranging between 0.2 mm and 1.5 mm inclusive.