Gas turbine engine starter generator that selectively changes the number of rotor poles
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02P-009/44
H02P-009/00
출원번호
US-0118942
(2005-04-28)
발명자
/ 주소
Xu,Mingzhou
Chen,Wei
Duddeck,Michael W.
Pearson,Wayne T.
Scherzinger,William M.
출원인 / 주소
Honeywell International, Inc.
대리인 / 주소
Ingrassia Fisher &
인용정보
피인용 횟수 :
8인용 특허 :
21
초록▼
A rotating electrical machine, such as an aircraft starter-generator, that may be operated in either a motor mode or an generator mode. The machine includes a main rotor that is selectively configurable as an M-pole rotor or an N-pole rotor. The machine can also include DC brushes that are selective
A rotating electrical machine, such as an aircraft starter-generator, that may be operated in either a motor mode or an generator mode. The machine includes a main rotor that is selectively configurable as an M-pole rotor or an N-pole rotor. The machine can also include DC brushes that are selectively moveable into, and out of, electrical contact the main rotor, to thereby electrically couple and decouple a DC power source to and from, respectively, the rotor windings.
대표청구항▼
We claim: 1. A gas turbine engine starter-generator, comprising: a housing; a main stator mounted within the housing; and a main rotor mounted within the housing and located at least partially within at least a portion of the main stator, the main rotor selectively configurable as either an M-pole
We claim: 1. A gas turbine engine starter-generator, comprising: a housing; a main stator mounted within the housing; and a main rotor mounted within the housing and located at least partially within at least a portion of the main stator, the main rotor selectively configurable as either an M-pole rotor or an N-pole rotor. 2. The starter-generator of claim 1, further comprising: a control circuit electrically coupled to at least the main rotor and operable to selectively configure the main rotor as the M-pole rotor or the N-pole rotor. 3. The starter-generator of claim 2, further comprising: a plurality of windings wound on at least a portion of the main rotor; and a switch electrically coupled between selected ones of the main rotor windings, the switch having at least a first position and a second position, wherein the main stator is configured as the M-pole rotor with the switch in the first position, and is configured as the N-pole stator with the switch in the second position. 4. The starter-generator of claim 3, wherein the control circuit comprises: switch control circuitry operable to move the switch between at least the first position and the second position. 5. The starter-generator of claim 1, further comprising: at least two brushes adapted to electrically couple to a DC power source and selectively moveable into, and out of, electrical contact with at least a portion of the main rotor, whereby the brushes are electrically coupled to, and decoupled from, respectively, the main rotor windings. 6. The starter-generator of claim 1, further comprising: an exciter rotor mounted on the shaft; an exciter stator having a plurality of windings wound thereon, the exciter stator mounted within the housing and located at least partially around at least a portion of the exciter rotor; and at least one rectifier assembly electrically coupled in series between the exciter stator windings and the main rotor windings. 7. The starter-generator of claim 1, wherein M is unequal to N. 8. The starter-generator of claim 7, wherein N=(M/2). 9. A gas turbine engine starter-generator, comprising: a housing; a shaft rotationally mounted within the housing; a main rotor mounted on the shaft; a main stator mounted within the housing and located at least partially around at least a portion of the main rotor; a plurality of main rotor windings wound around at least a portion of the main rotor; and a switch electrically coupled between selected ones of the main rotor windings and having at least a first position and a second position, wherein the switch, when in the first position, electrically couples the main rotor windings such that the main rotor is configured as an M-pole rotor and, when in the second position, electrically couples the main rotor windings such that the main rotor is configured as an N-pole rotor. 10. The starter-generator of claim 9, further comprising: a control circuit operable to selectively move the switch between the first and second positions. 11. The starter-generator of claim 10, wherein the control circuit includes: switch control circuitry operable to selectively move the switch between the first and second positions. 12. The starter-generator of claim 11, further comprising: a plurality of main stator windings wound on at least a portion of the main stator, each of the main stator windings adapted to selectively electrically couple to a DC power source. 13. The starter-generator of claim 9, further comprising: at least two brushes adapted to electrically couple to a DC power source and selectively moveable into, and out of, electrical contact with at least a portion of the main rotor, whereby the brushes are electrically coupled to, and decoupled from, respectively, the main rotor windings. 14. The starter-generator of claim 9, further comprising: an exciter rotor mounted on the shaft; an exciter stator having a plurality of windings wound thereon, the exciter stator mounted within the housing and located at least partially around at least a portion of the exciter rotor; and at least one rectifier assembly electrically coupled in series between the exciter stator windings and the main rotor windings. 15. The starter generator of claim 9, further comprising: a DC power source electrically coupled in series with the main rotor when the main rotor is configured as an N-pole rotor. 16. The starter-generator of claim 9, wherein M is unequal to N. 17. The starter-generator of claim 16, wherein N=(M/2). 18. A rotor for a gas turbine engine starter-generator, comprising: a main rotor body; and a plurality of rotor coils wound around at least a portion of the main body, wherein the rotor coils are wound in a configuration that allows the rotor to be selectively configured as an M-pole rotor or an N-pole rotor. 19. The rotor of claim 18, further comprising: a switch electrically coupled between selected ones of the rotor coils and having at least a first position and a second position. 20. The rotor of claim 19, wherein the rotor is configured as the M-pole rotor with the switch in the first position, and is configured as the N-pole rotor with the switch in the second position. 21. The rotor of claim 19, wherein M is unequal to N. 22. The rotor of claim 21, wherein N=(M/2). 23. A gas turbine engine starter-generator selectively configured to operate in either a motor mode or a generate mode, the starter-generator comprising: a housing; a main stator mounted within the housing and having a single set of stator windings wound thereon; and a main rotor mounted within the housing and located at least partially within at least a portion of the main stator, the main rotor (i) electrically isolated from the main stator and configured as an M-pole rotor when the starter-generator is configured to operate in the motor mode and (ii) electrically isolated from the main stator and configured as an N-pole rotor when the starter-generator is configured to operate in the generate mode. 24. In a motor/generator including a stator having a plurality of stator windings wound around at least a portion thereof and a rotor having a plurality of rotor windings wound around at least a portion thereof, a method of operating the motor/generator, comprising: electrically coupling at least a portion of the rotor windings together such that the main rotor is configured as an N-pole rotor; supplying DC power from a first DC power source to the electrically coupled rotor windings and DC power from a second DC power source to the stator windings, to thereby operate the motor/generator as a DC motor; and electrically coupling at least a portion of the rotor windings together such that the main rotor is configured as an M-pole rotor and no longer supplying DC power to the stator windings, to thereby operate the motor/generator as an AC generator. 25. In a motor/generator including a stator having a plurality of stator windings wound around at least a portion thereof and a rotor having a plurality of rotor windings wound around at least a portion thereof, a method of operating the motor/generator, comprising: electrically coupling at least a portion of the rotor windings together such that the main rotor is configured as an N-pole rotor; supplying DC power to the electrically coupled rotor windings and to the stator windings, to thereby operate the motor/generator as a DC motor; and electrically coupling at least a portion of the rotor windings together such that the main rotor is configured as an M-pole rotor and no longer supplying DC power to the stator windings, to thereby operate the motor/generator as an AC generator. 26. The method of claim 25, wherein the motor/generator further includes at least two brushes that are selectively electrically coupled to, and decoupled from, the rotor windings, the method further comprising: electrically coupling the brushes to the rotor windings when operating the motor/generator as a DC motor; and electrically decoupling the brushes from the from rotor windings when operating the motor/generator as an AC generator. 27. The method of claim 25, wherein the motor/generator changes from operation as a DC motor to an AC generator when its rotational speed reaches a predetermined magnitude. 28. The method of claim 25, wherein the motor/generator changes from operation as a DC motor to an AC generator a predetermined time after commencing operation as a DC motor.
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이 특허에 인용된 특허 (21)
Wallace Alan (Corvallis OR) Spe Ren (Corvallis OR), Brushless doubly-fed generation system for vehicles.
Xu, Mingzhou; Pearson, Wayne T.; Anghel, Cristian E.; Morcov, Nicolae, Gas turbine engine starter generator with multiple windings on each exciter stator pole.
Cameron Scott W. (Milpitas CA), Method and apparatus for starting a sensorless polyphase DC motor in dual-coil mode and switching to single coil mode at.
Couture Pierre (Boucherville CAX) Francoeur Bruno (Beloeil CAX) Lambert Ghislain (Beloeil CAX), Method and apparatus for starting up a synchronous machine.
Nelson, Robert J.; Suchor, Mark Robert, Single speed turbine generator for different power system output frequencies in power generation systems and associated methods.
Rozman Gregory I. (Rockford IL) Markunas Albert L. (Roscoe IL) Nuechterlein Paul E. (Rockford IL), Starter/generator system with variable-frequency exciter control.
Xu, Mingzhou; Chen, Wei; Pearson, Wayne T.; Scherzinger, William M.; Duddek, Michael W., Gas turbine engine starter generator with AC generator and DC motor modes.
Nakagawa,Masanori; Endou,Masahiko; Shinba,Kaoru; Yamamoto,Katsumi; Sugisawa,Yoshihiro, Inverter controlled generator set and method for controlling the same.
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