Transverse and/or commutated flux systems configured to provide reduced flux leakage, hysteresis loss reduction, and phase matching
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-001/06
H02K-021/12
출원번호
US-0271896
(2011-10-12)
등록번호
US-8415848
(2013-04-09)
발명자
/ 주소
Calley, David G.
Cole, Daniel S
Dyer, John M.
Janecek, Thomas F.
출원인 / 주소
Electric Torque Machines, Inc.
대리인 / 주소
Pillsbury Winthrop Shaw Pittman LLP
인용정보
피인용 횟수 :
13인용 특허 :
131
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 extended magnets, overhung rotors, and/or stator tooth overlap. Extended magnets may reduc
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 extended magnets, overhung rotors, and/or stator tooth overlap. Extended magnets may reduce flux leakage between adjacent flux concentrators. Overhung rotors may reduce flux leakage, and may also facilitate voltage balancing in polyphase devices. Stator tooth overlap may reduce hysteresis losses, for example losses in flux concentrating portions of an electrical machine.
대표청구항▼
1. An electrical machine, comprising: a stator; anda rotor comprising a plurality of magnets and a plurality of flux concentrators,wherein at least one of the plurality of magnets is extended a first distance in a first direction,wherein a flux concentrator adjacent the at least one of the plurality
1. An electrical machine, comprising: a stator; anda rotor comprising a plurality of magnets and a plurality of flux concentrators,wherein at least one of the plurality of magnets is extended a first distance in a first direction,wherein a flux concentrator adjacent the at least one of the plurality of magnets is extended a second distance in the first direction,wherein the first distance is greater than the second distance,wherein the rotor overhangs a side of the stator in a direction parallel to an air gap between the rotor and the stator, andwherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine. 2. The electrical machine of claim 1, wherein the height Y of the extended portion of the one of the plurality of magnets is represented by the equation Y>(G/2), and wherein G is the width of a gap between adjacent flux concentrators in the rotor. 3. The electrical machine of claim 1, wherein the overhung portion of the rotor is overhung by a length XL, and wherein XL has a value of between 1% and 20% of the length of the rotor in the axial direction. 4. An electrical machine, comprising: a plurality of magnets; anda plurality of flux concentrators interleaved with the plurality of magnets, wherein at least one of the plurality of magnets is extended a first distance in a first direction,wherein a flux concentrator adjacent the at least one of the plurality of magnets is extended a second distance in the first direction,wherein the first distance is greater than the second distance, andwherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine. 5. The electrical machine of claim 4, wherein the extended magnet reduces flux leakage between an adjacent flux concentrator on a first side of the extended magnet and an adjacent flux concentrator on a second side of the extended magnet. 6. The electrical machine of claim 4, wherein the extended magnet reduces flux leakage between flux concentrators on opposite sides of the extended magnet. 7. The electrical machine of claim 4, wherein the first direction is away from a coil of the electrical machine. 8. The electrical machine of claim 4, wherein the first direction is toward the rotational axis of a rotor of the electrical machine. 9. The rotor of claim 4, wherein the first direction is away from the rotational axis of the rotor. 10. The rotor of claim 4, wherein the first direction is parallel to the rotational axis of the rotor. 11. The electrical machine of claim 4, wherein the first direction is parallel to an air gap between a rotor of the electrical machine and a stator of the electrical machine. 12. The electrical machine of claim 4, wherein the first direction is away from the flux switching side of the adjacent flux concentrator. 13. The electrical machine of claim 4, wherein the at least one of the plurality of magnets is extended a third distance in a second direction, wherein a flux concentrator adjacent the at least one of the plurality of magnets is extended a fourth distance in the second direction, and wherein the first distance is greater than the second distance, andwherein the first direction and the second direction are different. 14. The electrical machine of claim 4, wherein the electrical machine is configured to achieve a flux switching frequency in excess of 125 Hz at a physical RPM of less than 250 RPM. 15. An electrical machine, comprising: a stator; anda rotor, wherein the rotor overhangs a first side of the stator and a second side of the stator in a direction parallel to an air gap between the rotor and the stator, andwherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine. 16. The electrical machine of claim 15, wherein the rotor comprises a plurality of magnets and a plurality of flux concentrators. 17. The electrical machine of claim 15, wherein the rotor overhangs a distance of between about 0.5 millimeters to about 10 millimeters beyond the side of the stator. 18. The electrical machine of claim 15, wherein the electrical machine is a polyphase device, and wherein the rotor overhangs the stator to at least partially balance the peak magnitude of voltage waveforms between phases in the polyphase device. 19. The electrical machine of claim 15, further comprising a Hall effect sensor coupled to the stator, wherein the Hall effect sensor is magnetically linked to at least a portion of the overhung portion of the rotor. 20. The electrical machine of claim 15, wherein at least one of the plurality of magnets is extended a first distance in a first direction, wherein a flux concentrator adjacent the at least one of the plurality of magnets is extended a second distance in the first direction, andwherein the first distance is greater than the second distance.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (131)
Shichijyo Akiya,JPX ; Kusase Shin,JPX, AC generator for vehicle.
Kusase, Shin; Maekawa, Takeo; Shichijoh, Akiya, Automotive tandem alternator having reduced axial length and capable of effectively suppressing magnetic leakage.
Blenkinsop Philip T. (Melbourn GB2) McLean Graham W. (Lyme GB2) Turner David (Haslingfield GB2), Electromagnetic machines with permanent magnet excitation.
Mischler William R. (02 Schenectady NY) General Electric Company (02 Schenectady NY), Laminated motor stator structure with molded composite pole pieces.
Fanning Alan W. (San Jose) Dahl Leslie R. (Livermore) Patel Mahadeo R. (San Jose) Olich Eugene E. (Aptos CA), Method for producing inner stators for electromagnetic pumps.
Ben Ahmed, Abdel Hamid; Multon, Bernard; Delamare, Jérome; Kerzreho, Corentin; Cognard, Jean-Yves; Bernard, Nicolas, Motor/generator with energized reluctance and coil in the air gap.
Angerer,Wolfram; Lange,Andreas; Muhlberger,Uwe, Rotor for an electric machine, especially a synchronous machine, and synchronous machine with a transverse flux.
Muhlberger Uwe,DEX ; Muller Robert,DEX ; Lange Andreas,DEX ; Angerer Wolfram,DEX, Rotor for an electric machine, particularly a transverse flow machine.
Huang Hao (Aurora CO) DeBruzzi Michael S. (Golden CO) Riso Thomas A. (Elizabeth CO), Stator and method of constructing same for high power density electric motors and generators.
Alan G. Jack GB; Barrie Mecrow GB; John Terence Evans GB; James Stonehouse Burdess GB; John Neville Fawcett GB; Dawn Stephenson GB; Phillip George Dickinson GB, Stator with teeth formed from a soft magnetic powder material.
Gierer Joseph T. ; Cox Karmen D. ; Hendrix George E., Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention.
Calley, David G.; Cole, Daniel S; Dyer, John M.; Janecek, Thomas F., Transverse and/or commutated flux systems configured to provide reduced flux leakage, hysteresis loss reduction, and phase matching.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.