Abstract:
According to one embodiment, a rotating electrical machine includes an annular winding, L (L is an arbitrary integer) stator magnetic poles, and L rotor magnetic poles having the same polarity. The L stator magnetic poles are disposed apart from each other in a rotational direction and facing the winding. The L rotor magnetic poles have the same polarity as each other. The L rotor magnetic poles are disposed apart from each other in the rotational direction and configured to face the L stator magnetic poles If an order of the fundamental wave component of a torque pulsation is N, M (M≤L) distances between centers of the adjacent poles between pole centers in one set of either the L stator magnetic poles or the L rotor magnetic poles are combinations of (Θ, Θ+Θ1/M, Θ+Θ1×2/M, . . . , and Θ+1×(M−1)/M), and Θ1 satisfies the relationship (180°/N)
Abstract:
According to one embodiment, a transverse flux machine includes a stator and a rotor. The stator includes a winding and a first ferromagnetic unit. The winding is wound along a rotational direction of a rotation axis. The first ferromagnetic unit has L (L is integer number) magnetic poles holding the winding. The rotor is rotatable relatively to the stator around the rotation axis. The rotor includes a second ferromagnetic unit having L magnetic poles facing the first ferromagnetic unit. If an order of harmonic component of torque ripple to be reduced is (N×1), (N×2), . . ., (N×(M−1)) (M and N are integer numbers. ML), among L magnetic poles in the first and second ferromagnetic units, a relative position of M magnetic poles along the rotational direction is shifted by Θ1 ((180°/N/M)Θ1 (540°/N/M)) in order.
Abstract:
A transverse flux machine includes a stator having a circular coil wound in a rotational direction and a rotor arranged to face the first ferromagnet across a gap. The stator has a plurality of first ferromagnets surrounding a part of the circular coil in the rotational direction separately. The rotor is rotatable about a center axis of the circular coil relative to the stator. The rotor has a plurality of second ferromagnets arranged in the rotational direction separately. A first member and a second member are inserted between adjacent ones of the second ferromagnets. The first member and the second member generate two magnetic fields opposite to each other in the circumference direction.
Abstract:
According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.
Abstract:
According to one embodiment, a rotary electric machine includes a rotor that is rotatable at a predetermined position and includes a plurality of first magnetic members arranged along an outer circumferential surface, the first magnetic members each including a first magnetic pole and a second magnetic pole. The rotary electric machine includes a first supporting member that surrounds a periphery of the rotor. The rotary electric machine includes a plurality of second supporting members that are fixed to an inner circumferential surface of the first supporting member. The rotary electric machine includes a plurality of second magnetic members that are fixed on side surfaces of the second supporting members and that have a third magnetic pole facing the first magnetic pole with an air gap and a fourth magnetic pole facing the second magnetic pole with an air gap.
Abstract:
An electric rotating machine according to an embodiment includes a stator element, a rotor element, and a housing. The rotor element is rotatable about a rotation axis. The housing houses the stator element and the rotor element, and is provided with an electric insulating portion on a part of or whole of an inner surface including a surface facing at least one of the stator element and the rotor element.
Abstract:
A rotary electric machine in an embodiment includes a stator, and a rotor capable of rotating around a rotation center. The rotor includes a first rotor core, a second rotor core, and a magnet. The first rotor core includes first rotor magnetic poles that are arranged being spaced apart from one another in a circumferential direction and that face first stator magnetic poles, and is annular. The second rotor core includes second rotor magnetic poles that are arranged being spaced apart from one another in the circumferential direction and that face second stator magnetic poles, and is annular. The magnet is located between the first rotor core and the second rotor core and provided with a slit-like magnet separation portion that separates at least a part thereof in the circumferential direction, and is annular.
Abstract:
According to an embodiment, an electric rotating machine includes a rotor element, an annular coil, a plurality of stator cores, and a plurality of wedge members. The rotor element is rotatable around a rotation axis. The coil is provided to be coaxial with the rotation axis. The plurality of stator cores are provided opposite to the rotor element and each includes a pair of magnetic pole parts opposing each other with the coil being interposed therebetween. Each of the plurality of wedge members is arranged between adjacent stator cores to apply preloads to the adjacent stator cores, the preloads containing components in a rotation direction of the rotor element and being opposite to each other.
Abstract:
A transverse flux machine includes a stator having a circular coil wound in a rotational direction, a plurality of first ferromagnets arranged in the rotational direction, each of the first ferromagnets surrounding a part of the circular coil; and a rotor arranged to face the first ferromagnets across a gap, the rotor being rotatable about a center axis of the circular coil; wherein the rotor includes a plurality of second ferromagnets arranged in the rotational direction; and a flux-generation part arranged between adjacent ones of the second ferromagnets, each of the second ferromagnets to generate a magnetic field in the rotational direction.
Abstract:
An electric rotating machine according to an embodiment includes a stator, and a rotor that is rotatable about a rotational center. The stator includes a winding having an annular shape with the rotational center, a first core, and a second core. The first core surrounds a part of the winding, and has a pole face to which a magnetic flux is input in a first direction, and a pole face from which the magnetic flux is output in the first direction. The second core surrounds a part of the winding, and has a pole face to which a magnetic flux is input in a second direction, and a pole face from which the magnetic flux is output in the second direction. The rotor is positioned spaced from the first core and the second core, and is rotatable about the rotational center, relatively with respect to the stator.