US7336000B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine
Assignee: Deere and Co
•
Filing: 2006-04-20
•
Granted: 2008-02-26
•
Expires: 2026-04-20
Abstract
Abstract 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.
Inventors
- 👤 Ronnie Dean Stahlhut
- 👤 Carl Thomas Vuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:58
CPC Classifications
F; F01; F01N; F01N5/00; F01N5/04; F02; F02B; F02B41/00; F02B41/02; F02B41/10; H; H02; H02J; H02J4/00; H02J7/00; H02J7/14; H02J7/1423; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
130 words
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.
Claim 2
Independent Claim
130 words
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.
Claim 3
Dependent Claim
34 words
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.
Claim 4
Dependent Claim
35 words
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.
Claim 5
Dependent Claim
33 words
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.
Claim 6
Dependent Claim
30 words
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.
Claim 7
Dependent Claim
34 words
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.
Claim 8
Dependent Claim
32 words
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.
Claim 9
Dependent Claim
23 words
The method according to claim 1 further comprising: supplying the controlled output current of the turbogenerator to the generator in a propulsion mode.
Claim 10
Dependent Claim
33 words
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.
Claim 11
Dependent Claim
41 words
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.
Claim 12
Dependent Claim
58 words
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.
Claim 13
Independent Claim
154 words
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.
Claim 14
Independent Claim
154 words
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.
Claim 15
Dependent Claim
34 words
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.
Claim 16
Dependent Claim
35 words
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.
Claim 17
Dependent Claim
30 words
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.
Claim 18
Dependent Claim
30 words
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.
Claim 19
Dependent Claim
29 words
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.
Claim 20
Dependent Claim
28 words
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.
Claim 21
Dependent Claim
32 words
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.
Claim 22
Dependent Claim
36 words
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.
Claim 23
Dependent Claim
42 words
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.
Claim 24
Dependent Claim
52 words
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.
Claim 25
Dependent Claim
51 words
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.
References Cited (Backward Citations)
US4665704A
Cited
US4955199A
Cited
US5176000A
Cited
DE19600252A1
Cited
US5893423A
Cited
US5932940A
Cited
US6213234B1
Cited
US6012289A
Cited
US6294842B1
Cited
US6125625A
Cited
US6870279B2
Cited
EP1083319A1
Cited
US6169334B1
Cited
US6093975A
Cited
US6308639B1
Cited
US20020003053A1
Cited
US6683389B2
Cited
US6281595B1
Cited
US6606864B2
Cited
US20040200215A1
Cited
US6604360B1
Cited
US6703719B1
Cited
US20050155349A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2011-02-25 | 2011-08-27 | 2012-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-02-25 | 2015-08-27 | 2016-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-02-25 | 2019-08-27 | 2020-02-26 | $7700.00 | Window Closed / Lapsed |