Conductor insulation arrangement for electric machine winding
AssigneeRemy Technologies, L.L.C.
InventorBradley D. Chamberlin
Life of this patent
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Abstract
An electric machine includes a core with a plurality of slots. A plurality of conductors are positioned in each of the plurality slots, with each slot including an equal number of conductors. At least one slot liner is also positioned in each of the plurality of slots. Each slot liner provides at least one slot liner channel in the associated slot, and each of the plurality of conductors extend through one of the slot liner channels. Differing numbers of slot liner channels are provided in the plurality of slots. Accordingly, all slots have the same number of conductors positioned therein, but all slots do not have the same number of slot liner channels.
Claims20
An electric machine comprising:
- a core with a plurality of slots;
- a multi-phase winding arrangement positioned on the core, the winding arrangement including an equal number of conductors positioned in each of the plurality of slots, each of the plurality of conductors associated with a phase of the multi-phase winding arrangement, wherein the conductors in a first group of slots are associated with a first number of phases of the multi-phase winding arrangement, and wherein the conductors in a second group of slots are associated with a second number of phases of the multi-phase winding arrangement;
- and
- at least one slot liner with at least one slot liner channel positioned in each of the plurality of slots, wherein the number of slot liner channels in the first group of slots is equal to the first number of phases associated with the first group of slots, and wherein the number of slot liner channels in the second group of slots is equal to the second number of phases associated with the second group of slots, wherein the number of phases in the plurality of slots alternates between one and two for each successive slot of the plurality of slots such that the number of phases alternates in a one-two-one-two pattern.
A method of making an electric machine comprising:
- inserting slot liners into slots of a stator core, each slot liner providing at least one slot liner channel, wherein the slot liners are inserted into the slots of the stator core such that a first number of slot liner channels is positioned in a first group of slots and a second number of slot liner channels is positioned in a second group of slots, wherein the first number is different than the second number, wherein successive slots of the stator core alternate between the first group of slots and the second group of slots;
- inserting a plurality of conductors into the plurality of slot liner channels, wherein the plurality of conductors inserted into each of a plurality of the slots of the stator core are associated with different winding phases;
- and
- joining adjacent connection ends of the plurality of conductors.
An electric machine comprising:
- a core with a plurality of slots;
- a multiphase winding provided on the core, the multiphase winding including a plurality of conductors positioned in each of the plurality slots, each of the plurality of conductors having a rectangular cross-sectional shape defining four sides;
- and
- at least one slot liner positioned in each of the plurality of slots, each slot liner providing at least one slot liner channel in each of the plurality of slots, and each of the plurality of conductors extending through one of the slot liner channels with at least two of the four sides contacting the slot liner, wherein differing quantities of slot liner channels are provided in the plurality of slots and at least two different phases of the multiphase winding are associated with slots having at least two slot liner channels.
Dependencies are inferred from the claim text.