Rotor Assembly For An Electric Machine And Method For Producing A Rotor Assembly
US-2015357879-A1 · Dec 10, 2015 · US
Electrical machine with a rotor having a cavity for the dynamic balancing of the rotor
US11239727B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11239727-B2 |
| Application number | US-201716300139-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 10, 2017 |
| Priority date | May 12, 2016 |
| Publication date | Feb 1, 2022 |
| Grant date | Feb 1, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention is an electrical machine comprising a stator and a rotor (10). The rotor is formed with a rotor body comprising a stack of laminations placed on a rotor shaft. The rotor includes at least one cavity with at least one arm for retaining at least one balancing weight.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrical machine comprising a stator and a rotor, the rotor being formed with a stack of laminations into a rotor body placed on a rotor shaft, wherein the rotor includes at least one cavity including at least one arm for retaining at least one weight for dynamically balancing the rotor, and wherein the at least one arm has an end spaced at a distance from a center of the cavity and the arms each include a concave curved surface. 2. The electrical machine according to claim 1 , wherein the at least one arm extends from an edge of the cavity toward a center of the cavity. 3. The electrical machine according to claim 1 , wherein the arms are spaced circumferentially from each other by an angle of 120°. 4. The electrical machine according to claim 2 , wherein the arms are spaced circumferentially from each other by an angle of 120°. 5. The electrical machine according to claim 1 , wherein the at least one balancing weight has a cross section that is located between the ends of the arms. 6. The electrical machine according to claim 2 , wherein the at least one balancing weight has a cross section that is located between the ends of the arms. 7. The electrical machine according to claim 3 , wherein the at least one balancing weight has a cross section that is located between the ends of the arms. 8. The electrical machine according to claim 1 , wherein the cavity has a closed section. 9. The electrical machine according to claim 2 , wherein the cavity has a closed section. 10. The electrical machine according to claim 3 , wherein the cavity has a closed section. 11. The electrical machine according to claim 5 , wherein the cavity has a closed section. 12. The electrical machine according to claim 8 , wherein the cavity has a polygonal closed section. 13. The electrical machine according to claim 8 , wherein the cavity has a pentagonal closed section. 14. The electrical machine according to claim 12 , wherein the cavity has a pentagonal closed section. 15. The electrical machine according to claim 1 , wherein the cavity comprises punched laminations. 16. The electrical machine according to claim 1 , wherein the cavity is disposed along and is parallel to a longitudinal axis of the rotor. 17. The electrical machine according to claim 1 , wherein the cavity is adjacent to a bore receiving the rotor shaft.
Assignees
Inventors
Classifications
Balancing the rotors · CPC title
Variable reluctance rotors · CPC title
having a flux concentration effect · CPC title
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title
- H02K7/04Primary
Balancing means · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11239727B2 cover?
- The present invention is an electrical machine comprising a stator and a rotor (10). The rotor is formed with a rotor body comprising a stack of laminations placed on a rotor shaft. The rotor includes at least one cavity with at least one arm for retaining at least one balancing weight.
- Who is the assignee on this patent?
- Ifp Energies Now, Mavel Srl, Mavel Edt S P A
- What technology area does this patent fall under?
- Primary CPC classification H02K7/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 01 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).