An electric generator including: a main generator, including a rotating portion having main field windings; a stationary portion having generator armature windings; and a woven insulator at least partially enclosing the main field windings of the rotating portion, the woven insulator being included of strips or fibers of a material woven together, wherein the woven insulator is permeable to a coolant in a liquid form.

A synchronous reluctance machine includes a stator and a rotor spaced apart from the stator by an air gap. The rotor is rotatably mounted about an axis and has laminations arranged axially behind one another. Each lamination has an anisotropic magnetic structure formed by flux blocking sections and flux conducting sections, wherein the flux blocking sections and the flux conducting sections form poles of the rotor. The flux blocking sections form axial channels, wherein in at least some flux blocking sections permanent magnets are provided that do not completely occupy the respective flux blocking section and thus allow axial airflow in all flux blocking sections. The laminated core of the rotor is axially subdivided into at least two component laminated cores, with radial cooling gaps formed between the poles in the region of the q axis as viewed in circumferential direction and between the component laminated cores as viewed axially.

A synchronous reluctance machine includes a stator and a rotor which is spaced apart from the stator by an air gap. The rotor rotatably mounted about an axis and includes laminations which are arranged axially one behind the other. Each lamination has an anisotropic magnetic structure which is formed by flux blocking sections and flux conducting sections. The flux blocking sections and flux conducting sections form poles of the rotor, with the flux blocking sections forming axially running channels and allowing an axial air flow. The laminated core of the rotor is axially subdivided into at least two component laminated cores, with radial cooling gaps being formed between the poles in the region of the q axis as viewed in a circumferential direction and between the component laminated cores as viewed axially.

A rotor for an electrical machine includes a core including a plurality of rotor poles circumferentially spaced apart from one another about a hub. A winding is wound about the rotor poles. The winding passes longitudinally through a respective winding gap between each circumferentially adjacent pair of rotor poles. A cooling tube extends through at least one of the respective winding gaps.

The rotor includes a shaft that allows cooling oil to flow therein; a substantially cylindrical rotor yoke fitted over the shaft; a magnet fitted to the rotor yoke; and a first end plate abutting on one end of the rotor yoke. In this configuration, the rotor yoke includes a cooling oil passage that is formed on a radially inner side of the magnet and allows the cooling oil to flow in an axial direction, the rotor yoke receives a pressing force in the axial direction via the first end plate, and the rotor yoke and the first end plate form a sealing part that seals the cooling oil, in a section positioned between the cooling oil passage and the magnet in the radial direction.

A rotor assembly for an electric machine includes a core having at least one post and a cap wherein electrical windings are wound about the rotor assembly to define a pole. The rotation of the rotor and rotor pole relative to a stator generates a current supplied from the electric machine to a power consuming device.

To cool field winding from its inner peripheral side and increase an insulation performance, salient-pole rotor (3) has rotor yoke (12) provided along rotation shaft (11), magnetic cores (13) protruding outward in radial direction from outer peripheral portion of rotor yoke (12) and arranged at regular intervals in circumferential direction, magnetic head (14) provided at radial direction outer side of magnetic core (13), and field winding (15) wound around outer peripheral surface of magnetic core (13) between rotor yoke (12) and magnetic head (14). And, insulating structure of ventilation path of salient-pole rotor (3) has ventilation groove (15a) opening to inner peripheral surface of field winding (15) and penetrating field winding (15) in radial direction, ventilation hole (14a) penetrating magnetic head (14) in radial direction and communicating with ventilation groove (15a), and stepped portion (15b) formed at portion, at magnetic head (14) side, of ventilation groove (15a).

A salient pole machine (30) comprises a rotor (20) rotating about a machine axis, said rotor (20) having at its circumference a rotor rim (21) with a predetermined outer radius (29), whereby a plurality of salient poles (22), each extending in radial direction, is attached to said rotor (20) at said rotor rim (21) at a respective pole-rim interface (24).

The mechanical properties of the configuration are improved by providing at said pole-rim interface (24) a plurality of axial rib-like rim extensions (25) projecting radially from said rotor rim (28) with a predetermined circumferential distance (d) between neighboring rim extensions (25), by each salient pole (22) having a plurality of axial pole grooves (26) matching and receiving said rib-like rim extensions (25) at the respective pole-rim interface (24), and by providing fixing elements (27) to fix said rib-like rim extensions (25) in said pole grooves (26).

A rotor assembly (40) for an electric machine including a core (42) having at least one post (44) about which a winding may be wound, and a cap (52) coupled to the post (44) and having a portion overlying a winding (46), wherein the cap (52) comprises a plurality of laminations and the core (42) does not comprise a plurality of laminations.

Provided is a rotating machine capable of obtaining a uniform temperature distribution by improving a cooling air flow to a heat generation portion. The rotating machine has a salient pole rotor (11) and a stator (12). The salient pole rotor (11) has a rotation shaft (15), a disk-shaped spoke (22), a cylindrical rib (23), and a plurality of salient poles (25) arranged in a radial shape on an outer circumferential surface of the rib (23), each of the salient poles (25) being formed along an axial direction of the rotation shaft (15). The disk-shaped spoke (22) is provided to an anti-feeding side end of the cooling air of the salient pole rotor (11). The cylindrical rib (23) is provided with through-holes (231) extending from an inner space of the cylindrical rib (23) through gaps between a plurality of salient poles (25).