Patent ID: 8122590
Filing Date: 2012-02-28
Classification: H02K,Y10T

Abstract:
1. A method of manufacturing a three-phase, four pole electric motor, the method comprising the steps of: winding a first first phase coil group and a second first phase coil group from a first wire, wherein said first and second first phase coil groups form a first first phase pole pair; inserting said first and second first phase coil groups into a first lower portion of a plurality of stator slots; winding a third first phase coil group and a fourth first phase coil group from a second wire, wherein said third and fourth first phase coil groups form a second first phase pole pair; inserting said third and fourth first phase coil groups into a second lower portion of said plurality of stator slots; winding a first second phase coil group and a second second phase coil group from a third wire, wherein said first and second second phase coil groups form a first second phase pole pair; inserting a first half of said first second phase coil group and a first half of said second second phase coil group into a third lower portion of said plurality of stator slots; inserting a second half of said first second phase coil group and a second half of said second second phase coil group into a first upper portion of said plurality of stator slots; winding a third second phase coil group and a fourth second phase coil group from a fourth wire, wherein said third and fourth second phase coil groups form a second second phase pole pair; inserting a first half of said third second phase coil group and a first half of said fourth second phase coil group into a fourth lower portion of said plurality of stator slots; inserting a second half of said third second phase coil group and a second half of said fourth second phase coil group into a second upper portion of said plurality of stator slots; winding a first third phase coil group and a second third phase coil group from a fifth wire, wherein said first and second third phase coil groups form a first third phase pole pair; inserting said first and second third phase coil groups into a third upper portion of said plurality of stator slots; winding a third third phase coil group and a fourth third phase coil group from a sixth wire, wherein said third and fourth third phase coil groups form a second third phase pole pair; and inserting said third and fourth third phase coil groups into a fourth upper portion of said plurality of stator slots.