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US 2009/0212653 A1Published application
Electric machine winding arrangement
AssigneeFord Global Technologies, LLC
InventorsFeng Liang, Michael Degner
Life of this patent
Estimating the term…
Abstract
Rotational electric machine stator winding arrangement characterized, inter alia, by at least one coil of each parallel circuit being discontinuous with the other coils of the corresponding circuit, and by coils configured to accept phase voltage not being adjacent coils having a point at the lowest potential of a corresponding circuit.
Claims15
A rotational electric machine stator comprising:
- a plurality of coils divided into a first circuit and a second circuit, the coils within each circuit connected to one another in series and the first and second circuits connected to one another in parallel, both the first circuit and the second circuit having a beginning coil and an ending coil across which a phase voltage (Vp) is applied;
- wherein at least one series connection in each of the first and second circuits is between non-adjacent coils, and the beginning coil and the ending coil at each circuit are selected so that a maximum voltage across two contacting adjacent conductors is at most approximately 0.75Vp.
A rotational electric machine stator comprising:
- a first coil having a first and second end;
- a second coil having a first and second end, the second coil adjacent the first coil;
- a third coil having a first and second end, the third coil adjacent the second coil;
- a fourth coil having a first and second end, the fourth coil adjacent the third coil;
- a fifth coil having a first and second end, the fifth coil adjacent the fourth coil;
- a sixth coil having a first and second end, the sixth coil adjacent the fifth coil;
- a seventh coil having a first and second end, the seventh coil adjacent the sixth coil;
- and
- an eighth coil having a first and second end, the eighth coil adjacent the seventh and first coils, wherein
- the first end of each of the first and eighth coils is configured to receive a phase voltage;
- the first end of the second coil is coupled to the second end of the first coil, the first end of the fourth coil is coupled to the second end of the second coil, and the first end of the sixth coil is coupled to the second end of the fourth coil such that the first, second, fourth and sixth coils are electrically coupled in series to form a first circuit;
- the first end of the seventh coil is coupled to the second end of the eighth coil, the first end of the fifth coil is coupled to the second end of the seventh coil, and the first end of the third coil is coupled to the second end of the fifth coil such that the eighth, seventh, fifth and third coils are electrically coupled in series to form a second circuit;
- and
- the second end of the third coil is electrically coupled to the second end of the sixth coil, such that the first and second circuits are electrically coupled in parallel.
11 more elements
A rotational electric machine stator comprising:
- a first coil having a first and second end;
- a second coil having a first and second end, the second coil adjacent the first coil;
- a third coil having a first and second end, the third coil adjacent the second coil;
- a fourth coil having a first and second end, the fourth coil adjacent the third coil;
- a fifth coil having a first and second end, the fifth coil adjacent the fourth coil;
- a sixth coil having a first and second end, the sixth coil adjacent the fifth coil;
- a seventh coil having a first and second end, the seventh coil adjacent the sixth coil;
- and
- an eighth coil having a first and second end, the eighth coil adjacent the seventh and first coils, wherein
- the first end of each of the first and fourth coils is configured to receive a phase voltage;
- the first end of the third coil is coupled to the second end of the first coil, the first end of the fifth coil is coupled to the second end of the third coil, and the first end of the seventh coil is coupled to the second end of the fifth coil such that the first, third, fifth and seventh coils are electrically coupled in series to form a first circuit;
- the first end of the second coil is coupled to the second end of the fourth coil, the first end of the eighth coil is coupled to the second end of the second coil, and the first end of the sixth coil is coupled to the second end of the eighth coil such that the fourth, second, eighth and sixth coils are electrically coupled in series to form a second circuit;
- and
- the second end of the sixth coil is electrically coupled to the second end of the seventh coil, such that the first and second circuits are electrically coupled in parallel.
11 more elements
Dependencies are inferred from the claim text.