The disclosure relates to a method for designing a stator segment for a stator of an m-phase synchronous reluctance machine with concentrated windings, the stator being divided into a stator segment or a plurality of stator segments and comprising a ferromagnetic base body with peripherally distributed tooth structures and a winding system mounted in the base body, which comprises, per stator segment, z tooth structures and a number of winding phases (U, V, W) corresponding to the number of phases m, each of said winding phases comprising a series connection and/or a parallel connection of a plurality of the concentrated windings, a rotor of the synchronous reluctance machine comprising a pole number p in a peripheral section corresponding to the stator segment.

Described is a method for optimizing a synchronous reluctance motor assisted by magnets (1), comprising the arrangement of a stator (2) provided with a number (t) of slots (3), the arrangement of a rotor (4) having an outer cylindrical surface (S.sub.e) of radius (r.sub.e), an inner cylindrical surface (S.sub.I) of radius (r.sub.I), a rotation axis (A) and a number (p) of pole pairs, realisation in the rotor (4) of a number (n) of slots (7) defining flow barriers (Bn) with axial extension for each pole of the motor (1), designed to house magnets (6) and definition of each barrier (B.sub.n) with peripheral profile in the form of a circular segment with convexity facing towards the axis (A) and with concentric radii of curvature (r.sub.nA, r.sub.nB) with common centre (C) arranged along a radial axis (X). The number (n) of barriers (B.sub.n) is greater than or equal to 3, the centre (C) is located outside the surface (Se) and each barrier (Bn) has a constant thickness (bn) along its arcuate extension defined by the difference between the radii (r.sub.nA, r.sub.nB). The thicknesses (b.sub.n) are progressively decreasing from the surface (S.sub.i) to the surface (S.sub.e) with optimal thickness (b.sub.n) of the outer barrier (Bn) equal to b.sub.n=k.sub.n−1b.sub.1, where k.sub.n−1 is a numerical coefficient relative to the n-th barrier (B) corresponding to a substantially constant magnetic permeance across the barriers (B.sub.n) and to a response to a quadrature excitation current with minimum harmonic content.

A switched reluctance motor is disclosed. The switched reluctance motor includes a rotor, a stator, an air gap between the stator and the rotor, and a plurality of conductive elements. The plurality of conductive elements are disposed on the rotor.

This centrifugal blood pump apparatus includes an impeller (10) provided in a blood chamber (7), and a plurality of coils (20) provided in a motor chamber (8) for driving the impeller (10) to rotate with a dividing wall (6) interposed therebetween. A flexible substrate (23) in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (20), and is connected to the plurality of coils (20) and a connector (24). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils (20) via the connector (24) and the flexible substrate (23). Thus, assembling workability, productivity and reliability are improved.

A synchronous reluctance motor includes: a rotor shaft; a rotor core fixed to the rotor shaft and on which a plurality of flux barriers are formed; a stator core on which a plurality of protruding stator teeth are formed; and multiphase armature windings of a plurality of poles wound around the plurality of stator teeth. The flux barriers include a plurality of first flux barriers formed to be spaced out in the circumferential direction from each other and extend in a radial direction, and a plurality of second flux barriers formed in each of circumferential angular regions sandwiched between the first flux barriers to form a curved surface convex toward the center of the rotation-axis and to spread and be spaced out in the circumferential direction from each other.

A synchronous reluctance motor includes: an annular stator; and a rotor disposed radially inside the stator. The stator includes an annular stator core having in its inner peripheral portion a plurality of slots located at intervals in a circumferential direction of the stator, and slot coils accommodated in the slots. The slot coils are formed by a wire having a quadrilateral section and are wound in the slots by distributed winding.

A motor includes a rotor and a stator, the rotor includes flux barriers. In a plane orthogonal to an axial direction, at least two flux barriers corresponding to each pole of the rotor are located entirely within an extending angle. A magnitude of the extending angle is determined by a number of poles of the rotor and phases of the motor. A center line of the extending angle is a q-axis of the rotor. A ratio between an area of the flux barrier entirely located within the extending angle and an area of all flux barriers corresponding to the pole is about ½ or more, and a ratio between an area of a radially innermost flux barrier entirely located within the extending angle and an area of a radially outermost flux barrier entirely located within the extending angle and a smaller one of the two areas is about 10% or less.

The present invention discloses a six-phase switched reluctance motor, and a sensorless rotor position estimation method and system. The six-phase switched reluctance motor includes a stator assembly and a rotor assembly, the stator assembly includes a stator core, the stator core includes stator teeth and a stator yoke, and the stator teeth are provided with windings; and the number Ns of the stator teeth is a multiple of 6, every six adjacent windings form a six-phase winding, a plurality of sets of six-phase windings are provided, one ends of each set of six-phase windings are connected to each other to form a common terminal, and the other ends of each set of six-phase windings are connected to a controller interface.

The present disclosure relates to a motor. The motor can include a stator defining an interior space, a rotor disposed in the interior space of the stator. The rotor can include a body defining a structure and a plurality of magnets disposed in the plurality of cavities. In some embodiments, the structure defines a plurality of cavities in the body of the rotor, the plurality of cavities includes at least a first cavity and a second cavity, the first cavity is spaced radially outward from the second cavity, and a thickness of the first cavity is larger than a thickness of the second cavity. In some embodiments, at least some of the cavities of the plurality of cavities have a magnet from the plurality of magnets disposed therein.

Apparatus and methods are provided for operating an electric motor, comprising selectively energising the coils of a stator having a plurality of stator teeth, each stator tooth having a said coil mounted thereon. The stator coils of a subset of the stator teeth are energised during a given time period to attract a corresponding rotor tooth into alignment with each of the stator teeth in the subset over the given time period. The stator coil of at least one stator tooth in the subset is energised during a portion of the given time period before the at least one stator tooth overlaps the corresponding rotor tooth.