A rotating electrical machine equipped with a magnet unit and a magnetic body. The magnet unit is also equipped with magnet covers wrapped about armature-facing peripheral surfaces of the magnets. Each of the magnets has recesses formed in portions of the armature-facing peripheral surface which are located close to q-axes each of which lies at a boundary between magnetic poles. Each of the magnet covers is recessed in the radial direction in accordance with the shape of the magnet recesses. If the armature-facing peripheral surface of the magnets is between a circumferentially adjacent two of the magnet recesses is defined as a main magnetic pole surface, and an angle representing a circumferential range occupied by the main magnetic pole surface is defined as a main magnetic pole angle θa, the main magnetic pole angle θa is selected to be 2π/5<θa<2π/3.

A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.

A method and arrangement is disclosed herein for making a stator winding arrangement with multiple phase shift end turns. The winding arrangement is configured for use with conductors provided in multiple parallel paths and in 2-6-6-2 slot sets in each phase.

A stator with a multi-phase stator winding including phase windings each made of several winding segments, the segments including intermediate conductor portions arranged away from each other in a circumferential direction and link portions located at first and second radial end sides and connect the paired intermediate conductor portions into an annular shape. The winding segments are adjacent each other in a circumferential direction partially overlapping in the circumferential direction and include first and second winding segments overlapping each other in the circumferential direction. The link portions of the first winding segments are bent radially inward at at least one of axially opposed ends of the stator winding. The link portions of the second winding segments are bent radially outward at the at least one of the axially opposed ends of the stator winding. These link portions are arranged not overlapping in an axial direction of the stator.

A rotating electric machine includes: a field system including a magnet section having a plurality of magnetic poles whose polarities alternate in a circumferential direction; and an armature arranged to face the field system and including a multi-phase armature coil. Either of the field system and the armature is configured as a rotor. The field system also includes a soft-magnetic core having at least one magnet-receiving hole in which the magnet section is received and held. The armature coil has electrical conductor sections arranged at positions facing the field system and at predetermined intervals in the circumferential direction. In the armature, inter-conductor members are provided between the electrical conductor sections in the circumferential direction. The inter-conductor members in each part of the armature corresponding to one magnetic pole are magnetically saturated by magnetic flux from one magnetic pole of the magnet section when the electrical conductor sections are not energized.

The invention relates to a method for producing a wave winding for forming a coil winding (30) with at least one wave winding layer (33a, b) in a stator or rotor element (100), wherein a winding former (10) is provided with at least two winding sections (13a, b, c) and such that it can be rotated about a longitudinal axis (11), comprising the following method steps: Applying parallel coil wires to a first side (15) of the winding former (10) in a winding section (13) of the winding former (10); forming winding heads (31a, b) by alternately axially shifting the parallel coil wires on the winding former (10) and winding same about the rotated winding former (10); repeating steps a and b until the wave winding has reached a length of a first wave winding layer (33a) of the coil winding (30), wherein, according to the invention, the steps a to c are repeated in another winding section (13b) with a different winding width (12b). The invention also relates to a winding former (10) for producing a wave winding of this type which is suitable for introduction into grooves of a stator or rotor element (100).

The invention relates to a method for producing a wave winding for forming a coil winding (30) with at least one wave winding layer (33a, b) in a stator or rotor element (100), wherein a winding former (10) is provided with at least two winding sections (13a, b, c) and such that it can be rotated about a longitudinal axis (11), comprising the following method steps: Applying parallel coil wires to a first side (15) of the winding former (10) in a winding section (13) of the winding former (10); forming winding heads (31a, b) by alternately axially shifting the parallel coil wires on the winding former (10) and winding same about the rotated winding former (10); repeating steps a and b until the wave winding has reached a length of a first wave winding layer (33a) of the coil winding (30), wherein, according to the invention, the steps a to c are repeated in another winding section (13b) with a different winding width (12b). The invention also relates to a winding former (10) for producing a wave winding of this type which is suitable for introduction into grooves of a stator or rotor element (100).

A motor stator includes a ring-shaped core defining a rotor accommodation space, a plurality of slots, a first hairpin conductor, a second hairpin conductor, and a temperature sensor. The slots are disposed in the core and arranged to surround the rotor accommodation space circumferentially. The slots extend radially from the rotor accommodation space. The core includes an insertion side and an extension side. The slots include a temperature sensor accommodation slot which, at the insertion side, has a radial length greater than a radial length of any other one of the slots. The first hairpin conductor is disposed in the temperature sensor accommodation slot distal to the rotor accommodation space. The second hairpin conductor is disposed in the temperature sensor accommodation slot, and the temperature sensor is disposed between the first and second hairpin conductors.

A motor stator includes a ring-shaped core defining a rotor accommodation space, a plurality of slots, a first hairpin conductor, a second hairpin conductor, and a temperature sensor. The slots are disposed in the core and arranged to surround the rotor accommodation space circumferentially. The slots extend radially from the rotor accommodation space. The core includes an insertion side and an extension side. The slots include a temperature sensor accommodation slot which, at the insertion side, has a radial length greater than a radial length of any other one of the slots. The first hairpin conductor is disposed in the temperature sensor accommodation slot distal to the rotor accommodation space. The second hairpin conductor is disposed in the temperature sensor accommodation slot, and the temperature sensor is disposed between the first and second hairpin conductors.

A rotating electric machine includes a stator core, a stator coil formed of electrical conductors and insulating coats respectively covering the electrical conductors, and an encapsulating resin body. The stator coil has a coil end part protruding from the stator core. The coil end part includes exposed portions of the electrical conductors, which are exposed from the insulating coats, joints formed at the exposed portions, and covered portions of the electrical conductors which are covered with the respective insulating coats and respectively adjoin the exposed portions. The encapsulating resin body has a first part in which the exposed portions of the electrical conductors and the joints are encapsulated, and a second part in which at least part of each of the covered portions of the electrical conductors is encapsulated. A coefficient of linear expansion of the first part is lower than a coefficient of linear expansion of the second part.