[특허]Adjustable variable frequency starter/generator system

Hamilton Sundstrand Corporation

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

특허 상세정보

MyON담기

내보내기

Adjustable variable frequency starter/generator system

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02N-011/04 H02K-023/60 F16H-048/22 F16H-048/00 F16H-048/26
미국특허분류(USC)	290/038.R; 475/088
출원번호	US-0891370 (2004-07-14)
발명자 / 주소	Hoppe,Richard J. Thomson,Scott M. Turner,Douglas J.
출원인 / 주소	Hamilton Sundstrand Corporation
인용정보	피인용 횟수 : 11 인용 특허 : 33

초록
▼

A starter/generator system for a gas turbine engine used in aeronautical applications that couples a single dynamoelectric machine to the gas turbine engine through a torque converter in a starting mode, and then disengages the torque converter and engages the engine to the dynamoelectric machine through an adjustable speed transmission in a generating mode after the engine reaches self-sustaining speed, wherein the speed of the adjustable speed transmission is set to match the frequency of AC generated by the dynamoelectric machine with on-board electri...

대표
청구항
▼

What is claimed is: 1. A starter/generator system for starting a gas turbine engine for aeronautical applications comprising: an alternating current dynamoelectric machine; a torque converter with an input shaft coupled to a drive shaft of the dynamoelectric machine; a first rotation-speed selective coupling with an input shaft coupled to an output shaft of the torque converter and an output shaft coupled to a drive shaft of the engine, wherein the first coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the dynamoelectric machine through the torque converter to the engine in a starting mode; an adjustable speed transmission with an input shaft coupled to the drive shaft of the engine; a second rotation-speed selective coupling with an input shaft coupled to an output shaft of the adjustable speed transmission and an output shaft coupled to the drive shaft of the dynamoelectric machine, wherein the second coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the engine through the adjustable speed transmission in a generating mode; a hydraulic fluid source for selectively filling the torque converter with hydraulic fluid to transfer rotational power from the dynamoelectric machine to the engine during the starting mode; and a control unit for switching the dynamoelectric machine from a starting mode to a generating mode when the engine reaches a self-sustaining rotational speed, coupling the hydraulic source to the torque converter in the starting mode and adjusting the ratio of the adjustable speed transmission to change the frequency of power generated by the dynamoelectric machine in the generating mode. 2. The starter/generator system of claim 1, further comprising a solenoid two-way valve coupled between the hydraulic fluid source and the torque converter and operated by the control unit to couple the hydraulic fluid source to the torque converter in the starting mode. 3. The starter/generator system of claim 1, further comprising: an alternating current power source coupled to the dynamoelectric machine by the control unit during the starting mode; and an alternating current bus coupled to the dynamoelectric machine by the control unit during the generating mode. 4. The starter/generator system of claim 3, further comprising: a flight control unit for determining the frequency of power required by electrical components attached to the alternating current bus according to flight conditions, comparing the required power frequency to the frequency of power generated by the dynamoelectric machine, and providing the control unit with a difference signal, wherein the control unit adjusts the ratio of the adjustable speed transmission in response to the difference signal to change the frequency of power generated by the dynamoelectric machine to the required frequency. 5. The starter/generator system of claim 1, wherein the adjustable frequency transmission comprises a servo-controlled constant speed drive. 6. The starter/generator system of claim 1, wherein the adjustable frequency transmission comprises a servo-controlled continuously variable transmission. 7. The starter/generator system of claim 6, wherein the continuously variable transmission is a belt-driven continuously variable transmission. 8. The starter/generator system of claim 6, wherein the continuously variable transmission is a chain-driven continuously variable transmission. 9. The starter/generator system of claim 6, wherein the continuously variable transmission is a toroidal continuously variable transmission. 10. The starter/generator system of claim 1, wherein the first and second rotation-speed selective couplings are overrunning clutches. 11. The starter/generator system of claim 1, wherein the hydraulic fluid source comprises an oil pump. 12. The starter/generator system of claim 1, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a support motor coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the support motor in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 13. The starter/generator system of claim 1, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a motor controller coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the motor controller in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 14. The starter/generator system of claim 1, further comprising an engine speed sensor for generating an engine speed signal indicative of the rotational speed of the engine; wherein the control unit monitors the engine speed signal and switches the dynamoelectric machine from the starting mode to the generating mode when the engine speed signal indicates that the engine has reached the self-sustaining rotational speed. 15. A starter/generator system for starting a gas turbine engine for aeronautical applications comprising: an alternating current dynamoelectric machine; a torque converter with an input shaft coupled to a drive shaft of the dynamoelectric machine; a first rotation-speed selective coupling with an input shaft coupled to an output shaft of the torque converter and an output shaft coupled to a drive shaft of the engine, wherein the first coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the dynamoelectric machine through the torque converter to the engine in a starting mode; an adjustable speed transmission with an input shaft coupled to the drive shaft of the engine; a second rotation-speed selective coupling with an input shaft coupled to an output shaft of the adjustable speed transmission and an output shaft coupled to the drive shaft of the dynamoelectric machine, wherein the second coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the engine through the adjustable speed transmission in a generating mode; a hydraulic fluid source for selectively filling the torque converter with hydraulic fluid to transfer rotational power from the dynamoelectric machine to the engine during the starting mode; a control unit for switching the dynamoelectric machine from a starting mode to a generating mode when the engine reaches a self-sustaining rotational speed, coupling the hydraulic source to the torque converter in the starting mode and adjusting the ratio of the adjustable speed transmission to change the frequency of power generated by the dynamoelectric machine in the generating mode; a solenoid two-way valve coupled between the hydraulic fluid source and the torque converter and operated by the control unit to couple the hydraulic fluid source to the torque converter in the starting mode; an alternating current power source coupled to the dynamoelectric machine by the control unit during the starting mode; and an alternating current bus coupled to the dynamoelectric machine by the control unit during the generating mode. 16. The starter/generator system of claim 15, further comprising: a flight control unit for determining the frequency of power required by electrical components attached to the alternating current bus according to flight conditions, comparing the required power frequency to the frequency of power generated by the dynamoelectric machine, and providing the control unit with a difference signal, wherein the control unit adjusts the ratio of the adjustable speed transmission in response to the difference signal to change the frequency of power generated by the dynamoelectric machine to the required frequency. 17. The starter/generator system of claim 15, wherein the adjustable frequency transmission comprises a servo-controlled constant speed drive. 18. The starter/generator system of claim 15, wherein the adjustable frequency transmission comprises a servo-controlled continuously variable transmission. 19. The starter/generator system of claim 18, wherein the continuously variable transmission is a belt-driven continuously variable transmission. 20. The starter/generator system of claim 18, wherein the continuously variable transmission is a chain-driven continuously variable transmission. 21. The starter/generator system of claim 18, wherein the continuously variable transmission is a toroidal continuously variable transmission. 22. The starter/generator system of claim 15, wherein the first and second rotation-speed selective couplings are overrunning clutches. 23. The starter/generator system of claim 15, wherein the hydraulic fluid source comprises an oil pump. 24. The starter/generator system of claim 15, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a support motor coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the support motor in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 25. The starter/generator system of claim 15, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a motor controller coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the motor controller in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 26. The starter/generator system of claim 16, further comprising an engine speed sensor for generating an engine speed signal indicative of the rotational speed of the engine; wherein the control unit monitors the engine speed signal and switches the dynamoelectric machine from the starting mode to the generating mode when the engine speed signal indicates that the engine has reached the self-sustaining rotational speed. 27. A starter/generator system for starting a gas turbine engine for aeronautical applications comprising: an alternating current dynamoelectric machine; a torque converter with an input shaft coupled to a drive shaft of the dynamoelectric machine; a first rotation-speed selective coupling with an input shaft coupled to an output shaft of the torque converter and an output shaft coupled to a drive shaft of the engine, wherein the first coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the dynamoelectric machine through the torque converter to the engine in a starting mode; an adjustable speed transmission with an input shaft coupled to the drive shaft of the engine; a second rotation-speed selective coupling with an input shaft coupled to an output shaft of the adjustable speed transmission and an output shaft coupled to the drive shaft of the dynamoelectric machine, wherein the second coupling transfers power from its input shaft to its output shaft so long as the input shaft rotates at least as fast as the output shaft for coupling the engine through the adjustable speed transmission in a generating mode; a hydraulic fluid source for selectively filling the torque converter with hydraulic fluid to transfer rotational power from the dynamoelectric machine to the engine during the starting mode; a control unit for switching the dynamoelectric machine from a starting mode to a generating mode when the engine reaches a self-sustaining rotational speed, coupling the hydraulic source to the torque converter in the starting mode and adjusting the ratio of the adjustable speed transmission to change the frequency of power generated by the dynamoelectric machine in the generating mode; a solenoid two-way valve coupled between the hydraulic fluid source and the torque converter and operated by the control unit to couple the hydraulic fluid source to the torque converter in the starting mode; an alternating current power source coupled to the dynamoelectric machine by the control unit during the starting mode; an alternating current bus coupled to the dynamoelectric machine by the control unit during the generating mode; and a flight control unit for determining the frequency of power required by electrical components attached to the alternating current bus according to flight conditions, comparing the required power frequency to the frequency of power generated by the dynamoelectric machine, and providing the control unit with a difference signal, wherein the control unit adjusts the ratio of the adjustable speed transmission in response to the difference signal to change the frequency of power generated by the dynamoelectric machine to the required frequency. 28. The starter/generator system of claim 27, wherein the adjustable frequency transmission comprises a servo-controlled constant speed drive. 29. The starter/generator system of claim 27, wherein the adjustable frequency transmission comprises a servo-controlled continuously variable transmission. 30. The starter/generator system of claim 29, wherein the continuously variable transmission is a belt-driven continuously variable transmission. 31. The starter/generator system of claim 29, wherein the continuously variable transmission is a chain-driven continuously variable transmission. 32. The starter/generator system of claim 29, wherein the continuously variable transmission is a toroidal continuously variable transmission. 33. The starter/generator system of claim 27, wherein the first and second rotation-speed selective couplings are overrunning clutches. 34. The starter/generator system of claim 27, wherein the hydraulic fluid source comprises an oil pump. 35. The starter/generator system of claim 27, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a support motor coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the support motor in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 36. The starter/generator system of claim 27, further comprising a rotary position sensor for generating a rotary speed signal indicative of the rotary speed of the dynamoelectric machine; and a motor controller coupled to the dynamoelectric machine for bringing the dynamoelectric machine up to a predetermined rotary speed; wherein the control unit monitors the rotary speed signal and powers the motor controller in the starting mode until the rotary speed signal indicates that the dynamoelectric machine has reached the predetermined rotary speed. 37. The starter/generator system of claim 27, further comprising an engine speed sensor for generating an engine speed signal indicative of the rotational speed of the engine; wherein the control unit monitors the engine speed signal and switches the dynamoelectric machine from the starting mode to the generating mode when the engine speed signal indicates that the engine has reached the self-sustaining rotational speed.

이 특허에 인용된 특허 (33)

이 특허를 인용한 특허 피인용횟수: 11

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

특허 상세정보

Adjustable variable frequency starter/generator system

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (33)

이 특허를 인용한 특허 피인용횟수: 11

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

특허 상세정보

Adjustable variable frequency starter/generator system

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (33)

이 특허를 인용한 특허 피인용횟수: 11

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼