An electric coil device includes a winding support which is made of an elongated hollow tube that has the shape of a ring such that a higher-order loop of the winding device is formed entirely by the annular shape of the winding support, and a winding which is made of a superconductive conductor and is attached to the winding support. The superconductive conductor is wound in a helical manner about the hollow tube in a plurality of individual windings such that at least one higher-order winding of the entire helix is produced by the annular shape of the winding support. The interior of the hollow tube is designed as a coolant channel for circulating a fluid coolant. A rotor for an electric machine includes at least one such coil device.

A rotor may include a first rotor core and a second rotor core. The first rotor core includes a first core body and a first teeth protruding from an outer circumferential surface of the first core body. and the second rotor core includes a second core body and a second teeth protruding from an outer circumferential surface of the second core body. Each of the first teeth includes a first extension protruding axially in a first direction, and each of the second teeth includes a second extension protruding axially in a second direction opposite the first direction. The first extension includes a first protrusion provided on a first inner circumferential surface of the first extension, and the second extension includes a second protrusion provided on a second inner circumferential surface of the second extension.

A saddle coil for a rotor comprising: two poles of an electrical machine having a plurality of coil turns; for each coil turn of the plurality of coil turns, two straight longitudinal sections having a first length and, following on at a right angle from the longitudinal sections, two transverse sections symmetrically curved and with a second length less than the first length. Each longitudinal section and each transverse section includes a coil conductor with a high-temperature superconductor tape. The coil conductors are connected to one another at the corners of the saddle coil by pressing and/or soldering.

A support device for a rotor of an internal-rotor synchronous machine of a motor vehicle includes a star disk, which is able to be arranged on the laminated core of the rotor between an end side of the laminated core and end windings of the rotor windings, and a support ring for encasing the star disk. The star disk has a ring carrier for arranging on a rotor yoke of the laminated core, supporting teeth, protruding radially from the ring carrier, for arranging on rotor teeth of the laminated core, and collar-type end pieces, protruding axially from ends of the supporting teeth, for arranging on pole shoes of the rotor laminated core. The end pieces of the star disk and the support ring have mutually complementary bayonet joint regions, which are designed to connect the star disk and the support ring in a form-fitting manner.

An object of the present invention is to improve the fixing force of a stator core at low cost. The rotating electric machine includes a stator 300 in which a plurality of stator cores 400 are annularly arranged, a rotor to be arranged on the inner circumferential side of the stator 300, and a housing 500 having a cylindrical shape for fixing each of the plurality of stator cores 400. The stator core 400 has outer circumferential surfaces 410 and 420 arranged to face the inner circumferential surface 510 of the housing 500, and the outer circumferential surfaces 410 and 420 of the stator core 400 are slanted with respect to the inner circumferential surface 510 of the housing 500.

A wedge for use between poles of a generator for supporting windings of the poles includes a plurality of outer walls. The wedge also includes at least one fluid orifice extending through at least one of the plurality of outer walls and configured to receive a fluid from a shaft of the generator and to allow the fluid to flow through the at least one of the plurality of outer walls to reduce a temperature of the windings.

A rotating electrical machine includes a coil, a rotor including a shaft, a rotor core, a commutator including plural hooks being provided with a first hook to which an end of the coil is connected, the coil wound on a predetermined tooth of plural teeth, and an insulator attached to the rotor core, and a stator. The insulator includes an annular portion provided to surround the plural hooks which are aligned along a circumferential direction of the shaft, and a protrusion protruding opposite to the rotor core. The protrusion is arranged on a path where an end part of the coil passes through, the end part corresponding to an area from a part connected to the predetermined tooth to the end of the coil connected to the first hook, the protrusion being hooked by the end part.

A rotor of a current-activated electric machine has a plurality of windings which are arranged on the rotor, slots being formed between the windings. A textile has a plurality of fibers connected to one another in flat contact. The textile is arranged in at least one slot, and the textile is impregnated with a filling material which in the normal operational state of the rotor is in a solid state.

A wedge for use between poles of a generator for supporting windings of the poles includes a plurality of outer walls. The wedge also includes at least one fluid orifice extending through at least one of the plurality of outer walls and configured to receive a fluid from a shaft of the generator and to allow the fluid to flow through the at least one of the plurality of outer walls to reduce a temperature of the windings.

The present application provides an amortisseur-spring assembly for use about at least one of a wedge and a retaining ring of a generator. The amortisseur-spring assembly may include an amortisseur, a spring, a creepage block, and a locking mechanism extending through the amortisseur, the spring, and the creepage block.