[특허]Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine

Deere & Company

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Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-009/30 F02C-009/00 F02D-029/06
미국특허분류(USC)	290/052; 290/040.C; 322/029
출원번호	US-0409375 (2006-04-20)
등록번호	US-7336000 (2008-02-26)
발명자 / 주소	Stahlhut,Ronnie Dean Vuk,Carl Thomas
출원인 / 주소	Deere & Company
인용정보	피인용 횟수 : 16 인용 특허 : 18

초록
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A speed monitor for establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator. A speed detector detects speed data or a speed signal for a rotor or shaft associated with a turbogenerator. A turbogenerator controller controls an output current of the turbogenerator based on the detected speed data or speed signal to control a rotational speed of the rotor or the shaft. A voltage monitor establishes a lower voltage limit and an upper voltage limit for a generator. A voltage detector detects an output voltage level associated with the generator. A motor/generator controller controls the output voltage level of the generator electrical output by invoking at least one of a motor mode and a generator mode based on the detected output voltage level to maintain a desired operational voltage range.

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The invention claimed is: 1. A method for electrical power regulation of a turbogenerator and a generator associated with an internal combustion engine, the method comprising: establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator; detecting speed data or a speed signal for a rotor or shaft associated with a turbogenerator; controlling an output current of the turbogenerator based on the detected speed data or speed signal to control a rotational speed of the rotor or the shaft; establishing a lower voltage limit and an upper voltage limit for a generator; detecting an output voltage level associated with the generator; and controlling the output voltage level of the generator electrical output based on the detected output voltage level to maintain a desired operational voltage range. 2. The method according to claim 1 wherein the controlling comprises increasing the current output of the turbogenerator to a higher current level if the detected speed data or speed signal exceeds an upper threshold. 3. The method according to claim 1 wherein the controlling comprises decreasing the current output of the turbogenerator to a lower current level if the detected speed data or speed signal falls below a lower threshold. 4. The method according to claim 1 wherein the controlling comprises increasing the motor duty cycle or propulsion duty cycle of the generator if the detected output voltage level exceeds an upper voltage limit. 5. The method according to claim 1 wherein the controlling comprises increasing the generator duty cycle of the generator if the detected output voltage level falls below a lower voltage limit. 6. The method according to claim 1 further comprising: supplying the controlled output current of the turbogenerator to a load associated with at least one of a direct current bus and an alternating current bus. 7. The method according to claim 1 further comprising: supplying the controlled output voltage level to a load associated with at least one of a direct current bus and an alternating current bus. 8. The method according to claim 1 further comprising: supplying the controlled output current of the turbogenerator to the generator in a propulsion mode. 9. The method according to claim 8 further comprising: decoupling an internal combustion engine from an output shaft in the propulsion mode and coupling the generator to the output shaft in the propulsion mode. 10. The method according to claim 1 wherein the detecting of the speed comprises measuring a back electromotive force induced in one or more windings of the turbogenerator to estimate a rotational speed associated with a shaft or turbine of the turbogenerator. 11. The method according to claim 1 further comprising managing the speed of the rotor or the shaft associated with the turbogenerator through control of at least one of a fuel system associated with the internal combustion engine and a waste gate associated with a turbine of the turbogenerator such that the speed does not exceed the upper threshold. 12. A system for electrical power regulation of a turbogenerator and a generator associated with an internal combustion engine, the system comprising: a speed monitor for establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator; a speed detector for detecting speed data or a speed signal for a rotor or shaft associated with a turbogenerator; a turbogenerator controller for controlling an output current of the turbogenerator based on the detected speed data or speed signal to control a rotational speed of the rotor or the shaft; a voltage monitor for establishing a lower voltage limit and an upper voltage limit for a generator; a voltage detector for detecting an output voltage level associated with the generator; and a motor/generator controller for controlling the output voltage level of the generator electrical output based on the detected output voltage level to maintain a desired operational voltage range. 13. The system according to claim 12 wherein the turbogenerator controller increases the current output to a higher current level of the turbogenerator if the detected speed data or speed signal exceeds an upper threshold. 14. The system according to claim 12 wherein the turbogenerator controller decreases the current output of the turbogenerator to a lower current level if the detected speed data or speed signal falls below a lower threshold. 15. The system according to claim 12 wherein the motor/generator controller increases the motor propulsion duty cycle of the generator if the detected output voltage level exceeds an upper voltage limit. 16. The system according to claim 12 wherein the motor/generator controller increases the generator duty cycle of the generator if the detected output voltage level falls below a lower voltage limit. 17. The system according to claim 12 further comprising: an output bus for receiving the controlled output current of the turbogenerator and providing the controlled output current to a load. 18. The system according to claim 12 further comprising: an output bus for receiving the controlled output voltage level and providing the controlled output voltage level to the load. 19. The system according to claim 12 further comprising: an output bus for receiving the controlled output voltage level and providing the controlled output voltage level to the generator in a propulsion mode. 20. The system according to claim 19 further comprising: a transmission for decoupling an internal combustion engine from an output shaft in the propulsion mode and coupling the generator to the output shaft in the propulsion mode. 21. The system according to claim 12 wherein the speed detector comprises a device for measuring a back electromotive force induced in one or more windings of the turbogenerator to estimate a rotational speed associated with a shaft or turbine of the turbogenerator. 22. The system according to claim 12 further comprising: a waste gate associated with a turbine of the turbogenerator; a turbogenerator controller for managing the speed of the rotor or the shaft associated with the turbogenerator through control of the waste gate such that the speed does not exceed the upper threshold speed. 23. The system according to claim 12 further comprising: a fuel system associated with the internal combustion engine; a turbogenerator controller for managing the speed of the rotor or the shaft associated with the turbogenerator through control of the fuel system such that the speed does not exceed the upper threshold speed.

이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 16

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Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine

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이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 16

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Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine

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이 특허에 인용된 특허 (18)

이 특허를 인용한 특허 피인용횟수: 16

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IPC 상세정보(version : 201201)

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