A curvilinear track section of a linear motor system for use with a moving element including a machine readable medium, the track section including: a curvilinear track portion having a predetermined curved shape; a plurality of sensors provided to the track portion such that each of the plurality of sensors is oriented perpendicular to the direction of motion while the plurality of sensors are placed along the direction of motion and the plurality of sensors are configured such that the machine readable medium will overlap at least two of the plurality of sensors at the same time; and a processor configured to determine a position of the moving element on the curvilinear track section based on the readings from the sensors.

The disclosure relates to a brushless and magnet-free synchronous electrical machine, wherein it comprises a stator (20) comprising a ring (22), a winding (28) and a tooth system (24) comprising teeth (26) extending parallel to the axis of rotation from the ring (22), said winding being wound around the tooth system (24), a rotor (10), comprising a first portion (12a) extending in p preferred directions (18a), a second portion (12b) extending in p preferred directions (18b) shifted by p with respect to the preferred directions of the first portion (18a), and an intermediate portion (14) linking the first portion (12a) to the second portion (12b), and a coil (40) for exciting the rotor, fixed with respect to the stator, supplied with a DC electric current, positioned around the intermediate portion (14) of the rotor and configured so as to generate an electric flux in the rotor (10) through magnetic induction.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.

A curvilinear track section of a linear motor system for use with a moving element including a machine readable medium, the track section including: a curvilinear track portion having a predetermined curved shape; a plurality of sensors provided to the track portion such that each of the plurality of sensors is oriented perpendicular to the direction of motion while the plurality of sensors are placed along the direction of motion and the plurality of sensors are configured such that the machine readable medium will overlap at least two of the plurality of sensors at the same time; and a processor configured to determine a position of the moving element on the curvilinear track section based on the readings from the sensors.

Various embodiments include a method for twisting a winding head of a stator. The stator has a hollow cylindrical core with a slot on the inner surface extending between the end faces. The method includes positioning two conductors in the slot, so an end section of each conductor extends over the first end face; arranging a winding core with a cam protruding outward on the stator core; and twisting the end section of the first conductor in a peripheral direction, wherein the end section of the first conductor moves over the cam, bending a part of the end section of the first conductor in the radial direction defined by the stator core enlarging a distance between the end section of the first conductor and the end section of the second conductor measured in the radial direction of the stator core.

A stator includes an insulator, a wire, a stator core, a cylindrical hollow terminal through which the stator is to be electrically connected, and a resinous molding material covering the stator core and an outer face of the hollow terminal. An inner face of the hollow terminal is exposed from the molding material, and a first end of the hollow terminal is open to the outside of the molding material.

An apparatus for manufacturing a stator includes a placement table, a supporting member and a resistance heating device. The placement table is configured to have a stator core, which has coil segments and insulators inserted in slots thereof, placed thereon. The stator core is formed of steel sheets that are laminated in an axial direction of the stator core. The coil segments together form a stator coil. The insulators are formed of a material that is foamable upon being heated. The supporting member is configured to support, in the axial direction of the stator core, distal end portions of teeth of the stator core so as to prevent gaps from being formed between the steel sheets forming the stator core. The resistance heating device is configured to heat, through energization of the stator coil, the insulators along with the stator coil and thereby cause the insulators to foam.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.