Method and system for operating a set of generators
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-003/40
H02K-007/18
F02C-003/04
출원번호
US-0685072
(2017-08-24)
등록번호
US-10256638
(2019-04-09)
발명자
/ 주소
Zhang, Jinhui
Gemin, Paul Robert
Radun, Arthur Vorwerk
Woodburn, David Andrew
Lemon, Matthew Bruce
출원인 / 주소
GE Aviation Systems LLC
대리인 / 주소
General Electric Company
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
An apparatus and method of operating a set of generators supplying power to a common power bus, includes obtaining a first generator speed signal and a second generator speed signal, determining a common mode torsional oscillation value and a differential mode torsional oscillation value, determinin
An apparatus and method of operating a set of generators supplying power to a common power bus, includes obtaining a first generator speed signal and a second generator speed signal, determining a common mode torsional oscillation value and a differential mode torsional oscillation value, determining a first generator share command and a second generator share command based on the common mode torsional oscillation value and the differential mode torsional oscillation value, and applying the first and second generator share commands.
대표청구항▼
1. A method of operating a set of generators supplying power to a common power bus, the method comprising: obtaining, in a power sharing controller module, a first generator signal and a second generator signal;determining, in the power sharing controller module, a common mode torsional oscillation
1. A method of operating a set of generators supplying power to a common power bus, the method comprising: obtaining, in a power sharing controller module, a first generator signal and a second generator signal;determining, in the power sharing controller module, a common mode torsional oscillation value and a differential mode torsional oscillation value based on the obtained first and second generator signals;determining, in the power sharing controller module, a first generator share command based on the summation of a predetermined share ratio value for the first generator and the differential mode torsional oscillation value;determining, in the power sharing controller module, a second generator share command based on the difference of a predetermined share ratio value for the second generator and the differential mode torsional oscillation value;modifying the first and second generator share commands by summating the respective share command with the common mode torsional oscillation value; andapplying the modified first and second generator share commands, wherein the applying damps the differential mode torsional oscillation and the common mode torsional oscillation of the first and second generators. 2. The method of claim 1, further comprising generating, by the power sharing controller module, a first generator voltage command and a second generator voltage command based on the respective determined first and second generator share commands. 3. The method of claim 2 wherein the modifying includes modifying the first and second generator voltage command by summating the respective voltage command with the common mode torsional oscillation value. 4. The method of claim 3, further comprising operating the first generator in accordance with the applied first generator voltage command and operating the second generator in accordance with the applied second generator voltage command. 5. The method of claim 1, further comprising operating the first generator in accordance with the applied first generator share command and operating the second generator in accordance with the applied second generator share command. 6. The method of claim 1 wherein the determining the common mode torsional oscillation value includes determining a common mode gain value. 7. The method of claim 1 wherein the first and second generator signals include a first generator speed signal and a second generator speed signal, and determining the common mode torsional oscillation value includes averaging the first and second generator speed signals. 8. The method of claim 1 wherein determining the differential mode torsional oscillation value includes determining a differential mode gain value. 9. The method of claim 1 wherein determining the differential mode torsional oscillation value includes calculating the difference between the first and second generator speed signals. 10. The method of claim 1 wherein the first and second generators are driven by difference kinetic sources. 11. A method of operating a set of generators supplying power to a common power bus, the method comprising: obtaining, in a power sharing controller module, a set of generator speed signals from the set of generators;determining, in the power sharing controller module, a common mode torsional oscillation value and a set of differential mode torsional oscillation values based on the obtained set of generator speed signals, wherein a number of the set of differential mode torsional oscillation values equals a number of the set of generator minus one;determining, in the power sharing controller module, a set of share command for the respective set of generators based on at least one of a summation of or a difference between a predetermined share ratio value for the respective generator and a subset of the differential mode torsional oscillation values;modifying the determined set of share commands by summating the set of share commands with the common mode torsional oscillation value; andapplying the modified set of share commands, wherein the applying damps the differential mode torsional oscillation and the common mode torsional oscillation of the set of generators. 12. The method of claim 11, further comprising operating the set of generators in accordance with the applied set of share commands. 13. The method of claim 11 wherein determining the common mode torsional oscillation value includes averaging the obtained set of generator speed signals. 14. The method of claim 11 wherein determining the set of differential mode torsional oscillation values includes determining a first differential mode torsional oscillation value by halving the difference between a first and a second generator speed signals and a second differential mode torsional oscillation value by halving the difference between the second and a third generator speed signals. 15. The method of claim 11 wherein determining the set of share commands includes at least one summation of a predetermined share ratio value for a respective first generator and a first differential mode torsional oscillation value and at least difference between a predetermined share ratio value for a respective second generator and a second differential mode torsional oscillation value. 16. The method of claim 15 wherein determining the set of share commands further includes the summation of a predetermined share ratio value for a respective third generator with the difference between the second differential mode torsional oscillation value and the first differential mode torsional oscillation value. 17. The method of claim 11 wherein at least a subset of the generators are driven by difference kinetic sources. 18. A power distribution system, comprising: a common power distribution bus;a first generator having a first speed sensor and supplying power to the common power distribution bus, and a second generator having a second speed sensor and supplying power to the common power distribution bus; anda power sharing controller module connected with the first and second speed sensors and configured to obtain a first generator speed signal from the first speed sensor and a second generator speed signal from the second speed sensor, determine a common mode torsional oscillation value and a differential mode torsional oscillation value based on the obtained first and second generator speed signals, determine a first generator share command based on the summation of a predetermined share ratio value for the first generator and the differential mode torsional oscillation value, determine a second generator share command based on the difference of a predetermined share ratio value for the second generator and the differential mode torsional oscillation value, and modify the first and second generator share commands by summating the respective share command with the common mode torsional oscillation value. 19. The power distribution system of claim 18 wherein the first and second generator are driven by difference kinetic sources. 20. The power distribution system of claim 18 wherein the first and second generator are adapted to supply power in response to receiving the respective modified first and second generator share command.
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