IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0797671
(2013-03-12)
|
등록번호 |
US-8836196
(2014-09-16)
|
발명자
/ 주소 |
- Calley, David G.
- Cole, Daniel S.
- Dyer, John M.
- Janecek, Thomas F.
- Williams, Tyler K.
|
출원인 / 주소 |
- Electric Torque Machines, Inc.
|
대리인 / 주소 |
Pillsbury Winthrop Shaw Pittman LLP
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
216 |
초록
▼
Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve increased efficiency, increased output torque, and/or reduced operating losses via use of laminated materials, for example laminated materials configured with cuts and/or segmentat
Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve increased efficiency, increased output torque, and/or reduced operating losses via use of laminated materials, for example laminated materials configured with cuts and/or segmentations. Segmentations may also assist with manufacturability, mechanical retention of components, and the like.
대표청구항
▼
1. A method for reducing losses in an electrical machine, the method comprising: forming a first stator portion from a first lamination stack and a second lamination stack, the first lamination stack and the second lamination stack having a gap therebetween, the first lamination stack and the second
1. A method for reducing losses in an electrical machine, the method comprising: forming a first stator portion from a first lamination stack and a second lamination stack, the first lamination stack and the second lamination stack having a gap therebetween, the first lamination stack and the second lamination stack being arranged circumferentially with respect to a rotational axis for the electrical machine;forming a second stator portion from a third lamination stack and a fourth lamination stack, the third lamination stack and the fourth lamination stack having a gap therebetween, the third lamination stack and the fourth lamination stack being arranged circumferentially with respect to the rotational axis for the electrical machine; andcoupling the first stator portion to the second stator portion by at least one back return lamination to provide a flux path at least partially around a coil arranged circumferentially with respect to and fully encircling the rotational axis, wherein the first stator portion is positioned on a first side of the coil, and the second stator portion is positioned on a second side of the coil;wherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine. 2. The method of claim 1, wherein the first lamination stack and the second lamination stack are separable by a plane perpendicular to the rotational axis of the electrical machine. 3. The method of claim 1, wherein the gaps are configured to provide features for mechanical connection between at least two of the multiple lamination stacks. 4. The method of claim 1, wherein the first stator portion has at least one gap therethrough configured to reduce losses from flux linking within the first stator portion. 5. The method of claim 1, wherein the electrical machine is configured with a torque density in excess of 20 Newton-meters per kilogram of active magnetic and electrical materials in the electrical machine. 6. The method of claim 1, wherein the coil is configured with a resistance of less than 0.1 ohm. 7. The method of claim 1, wherein the electrical machine is configured for use in an e-bike. 8. The method of claim 1, further comprising multiple back return laminations, wherein the multiple back return laminations extend more than 330 degrees around the rotational axis of the electrical machine. 9. The method of claim 1, wherein the back return lamination is configured with a least two holes therethrough in order to reduce flux sharing in the electrical machine. 10. The method of claim 1, wherein the first lamination stack and the second lamination stack are interlocking. 11. The method of claim 1, wherein the first lamination stack and the second lamination stack are coupled together via a non-magnetic component interlocking with the first lamination stack and the second lamination stack. 12. The method of claim 1, wherein the gap between the first lamination stack and the second lamination stack reduces losses in the first stator portion. 13. The method of claim 1, wherein the first stator portion comprises multiple lamination stacks interlocked to form a generally ring-shaped structure. 14. A method for reducing losses in an electrical machine, the method comprising: forming a first stator portion from a first lamination stack and a second lamination stack, the first lamination stack and the second lamination stack having a gap therebetween;forming a second stator portion from a third lamination stack and a fourth lamination stack, the third lamination stack and the fourth lamination stack having a gap therebetween; andcoupling the first stator portion to the second stator portion by at least one back return lamination to provide a flux path at least partially around a coil;wherein the gaps are interlocking gaps; andwherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine. 15. A method for reducing losses in an electrical machine, the method comprising: forming a first stator portion from a first lamination stack and a second lamination stack, the first lamination stack and the second lamination stack having a gap therebetween;forming a second stator portion from a third lamination stack and a fourth lamination stack, the third lamination stack and the fourth lamination stack having a gap therebetween; andcoupling the first stator portion to the second stator portion by at least one back return lamination to provide a flux path at least partially around a coil;wherein the first lamination stack comprises alternating layers of a first planar material and a second planar material; andwherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine.
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