| CPC H02K 1/2791 (2022.01) [H02K 1/02 (2013.01); H02K 1/27 (2013.01); H02K 11/33 (2016.01); H02K 1/278 (2013.01); H02K 5/203 (2021.01)] | 11 Claims |
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1. A rotating electrical machine system comprising:
a rotating electrical machine that includes a field element that has a magnet portion that includes a plurality of magnetic poles of which polarities alternate in a circumferential direction, and an armature that has a multiple-phase armature winding, in which the field element is a rotor; and
a controller that controls energization of the armature winding and an armature core having a teeth-less structure that does not have teeth in the armature core, wherein
the field element includes a field element core to which magnets that configure the magnet portion are fixed,
each magnet comprises:
a pair of first acting surfaces that oppose each other and through which a magnetic flux flows in or flows out, and a second acting surface that serves as an inflow surface or an outflow surface for magnetic flux in a q-axis-side end portion; and
between an acting surface on the armature side of the pair of first acting surfaces and the second acting surface, a magnet magnetic path that extends from one acting surface to the other,
the field element core has a q-axis-side portion that is adjacent in the circumferential direction to the second acting surface of the magnet,
in two magnets of the magnets that oppose each other via the q-axis-side portion between two magnetic poles of the plurality of magnetic poles that are adjacent in the circumferential direction, the magnet magnetic path extends from the second acting surface of one of the two magnets to the second acting surface of the other of the two magnets via the q-axis-side portion,
the controller controls an energization phase of the phases of the armature winding to cause a state of magnetic saturation of the q-axis-side portion of the field element core to be variable,
the armature winding includes conductor portions that are arranged at predetermined intervals in the circumferential direction in a position opposing the field element, and
in the armature,
an inter-conductor member is provided between the conductor portions in the circumferential direction, and a magnetic material is used as the inter-conductor member, the magnetic material meeting a relation of Wt×Bs≤Wm×Br, where Wt is a width dimension in the circumferential direction of the inter-conductor member for a single magnetic pole, Bs is a saturation magnetic flux density of the inter-conductor member, Wm is a width dimension in the circumferential direction of the magnet portion for a single magnetic pole, and Br is a remanent flux density of the magnet portion, and
the inter-conductor member is provided integrally with the armature core as a protruding portion that extends in the radial direction.
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