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US 12,587,053 B2Granted
Stator for electric machine and method of manufacturing said stator
AssigneeABB Schweiz AG
InventorsAlex Danci, Jouni Ikäheimo
Life of this patent
Estimating the term…
Abstract
A stator for an electric machine including a stator core including an outer shell, a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator slots is adapted to receive a stator winding of the electric machine; at least one auxiliary coil located adjacent to the stator core, and adapted to generate an auxiliary coil voltage during operation of the electric machine. The at least one auxiliary coil is located around at least a portion of one of the plurality of stator teeth such that said at least a portion of one of the plurality of stator teeth extends inside the at least one auxiliary coil.
Claims13
A stator for an electric machine comprising:
- a stator core having an outer shell, a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator teeth protrude radially inwards from the outer shell such that each of the plurality of stator slots is defined by adjacent stator teeth, and wherein the plurality of stator slots is adapted to receive a stator winding of the electric machine;
- at least one auxiliary coil located adjacent to the stator core, and adapted to generate an auxiliary coil voltage during operation of the electric machine;
- wherein the at least one auxiliary coil is located around a portion of one tooth of the plurality of stator teeth such that the portion of the one tooth extends inside the at least one auxiliary coil,
- wherein the at least one auxiliary coil is located around the portion of the one tooth such that a dimension of the at least one auxiliary coil in an axial direction is less than a dimension of the one tooth in the axial direction, wherein the axial direction is parallel to a centre axis of the stator core which is adapted to coincide with a rotation axis of the electric machine.
1 more element
An alternating-current machine comprising:
- a frame;
- a stator immovably supported to the frame;
- and
- a rotor received in the stator, and rotatably supported to the frame,
- wherein the stator includes an outer shell, a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator teeth protrude radially inwards from the outer shell such that each of the plurality of stator slots is defined by adjacent stator teeth, and wherein the plurality of stator slots is adapted to receive a stator winding of the electric machine;
- at least one auxiliary coil located adjacent to the stator core, and adapted to generate an auxiliary coil voltage during operation of the electric machine;
- wherein the at least one auxiliary coil is located around a portion of one tooth of the plurality of stator teeth such that the portion of the one tooth extends inside the at least one auxiliary coil,
- wherein the at least one auxiliary coil is located around the portion of the one tooth such that a dimension of the at least one auxiliary coil in an axial direction is less than a dimension of the one tooth in the axial direction, wherein the axial direction is parallel to a centre axis of the stator core which is adapted to coincide with a rotation axis of the electric machine.
5 more elements
A method of manufacturing a stator for an electric machine, wherein the method comprises:
- providing a stator core having an outer shell, a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator teeth protrude radially inwards from the outer shell such that each of the plurality of stator slots is defined by adjacent stator teeth, and wherein the plurality of stator slots is adapted to receive a stator winding of the electric machine;
- and
- providing at least one auxiliary coil adjacent to the stator core, wherein the at least one auxiliary coil is adapted to generate an auxiliary coil voltage during operation of the electric machine,
- wherein providing the at least one auxiliary coil adjacent to the stator core includes locating the at least one auxiliary coil around a portion of one tooth of the plurality of stator teeth such that the portion of the one tooth extends inside the at least one auxiliary coil, and
- wherein the at least one auxiliary coil is located around the portion of the one tooth such that a dimension of the at least one auxiliary coil in an axial direction is less than a dimension of the one tooth in the axial direction, wherein the axial direction is parallel to a centre axis of the stator core which is adapted to coincide with a rotation axis of the electric machine.
2 more elements
Dependencies are inferred from the claim text.