US4136286A
Expired / Lapsed
US
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Isolated electrical power generation system with multiple isochronous, load-sharing engine-generator units
Assignee: Woodward Inc
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Filing: 1977-07-05
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Granted: 1979-01-23
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Expires: 1997-07-05
Abstract
Abstract An isolated electrical power generation system is described with multiple isochronous, load-sharing engine-generator units. The system includes load sensing means for generating a signal representing the individual power output of each engine-generator unit, means for generating a signal representing the total power output of all the engine-generator units in the system, and load-sharing means responsive to deviations between each individual power output signal and the total power output signal for controlling the fuel inputs to the respective engines in the various units. A load simulating means responds to the occurrence of a preselected condition, such as an excessive temperature, in an individual unit for adding a simulated power output signal to the individual power output signal for that particular unit. This reduces the fuel input unit to that particular unit without reducing the total power output signal, thereby avoiding a reduction in the fuel inputs to the other units and a resultant reduction in the frequency of the power output of the system.
Inventors
- 👤 William J. O'Halloran
- 👤 James Trombley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:58
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/38; H02J3/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
In an isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units including (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) means for generating a signal representing the total power output of all the engine-generator units in said system, and (3) load-sharing means responsive to deviations between each individual power output signal and said total power output signal for controlling the fuel inputs to the respective engines in said units, the improvement comprising load simulating means responsive to the occurrence of a preselected condition in an individual unit for adding a simulated power output signal to the individual power output signal for the unit to reduce the fuel input to that unit without reducing said total power output signal, thereby avoiding a reduction in the fuel inputs to the other units and a resultant reduction in the frequency of the power output of the system.
Claim 2
Dependent Claim
156 words
In an isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units including (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) means for generating a signal representing the total power output of all the engine-generator units in said system, and (3) load-sharing means responsive to deviations between each individual power output signal and said total power output signal for controlling the fuel inputs to the respective engines in said units, the improvement comprising load simulating means responsive to the occurrence of a preselected condition in an individual unit for adding a simulated power output signal to the individual power output signal for the unit to reduce the fuel input to that unit without reducing said total power output signal, thereby avoiding a reduction in the fuel inputs to the other units and a resultant reduction in the frequency of the power output of the system.
Claim 3
Dependent Claim
19 words
An isolated electrical power generation system as set forth in claim 1 wherein said preselected condition is engine temperature.
Claim 4
Dependent Claim
34 words
An isolated electrical power generation system as set forth in claim 1 wherein said simulated power output signal represents the integral of any increase in the actual engine temperature above a preselected reference temperature.
Claim 5
Dependent Claim
174 words
An isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units, said system comprising the combination of (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) load simulating means responsive to the occurrence of a preselected condition in an individual unit for producing a simulated power output signal for that unit, (3) summing means for adding said simulated power output signal to the actual power output signal for the unit in which said preselected condition occurs so as to produce a signal representing a power output higher than the actual power output of that unit, (4) means for generating a signal representing the total power output of all the engine-generator units in said system, including said simulated power output signals for any units in which said preselected condition is present, and load-sharing means responsive to deviations between each individual power output signal, including said simulated signals, and said total power output signal for controlling the fuel inputs to the respective engines in said units.
Claim 6
Dependent Claim
174 words
An isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units, said system comprising the combination of (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) load simulating means responsive to the occurrence of a preselected condition in an individual unit for producing a simulated power output signal for that unit, (3) summing means for adding said simulated power output signal to the actual power output signal for the unit in which said preselected condition occurs so as to produce a signal representing a power output higher than the actual power output of that unit, (4) means for generating a signal representing the total power output of all the engine-generator units in said system, including said simulated power output signals for any units in which said preselected condition is present, and load-sharing means responsive to deviations between each individual power output signal, including said simulated signals, and said total power output signal for controlling the fuel inputs to the respective engines in said units.
Claim 7
Dependent Claim
148 words
An isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units, said system comprising the combination of (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) load simulating means responsive to the occurrence of a preselected condition in an individual unit for producing a simulated power output signal for that unit representing a power output higher than the actual power output of the unit, (3) means for generating a signal representing the total power output of all the engine-generator units in said system, with said simulated power output signal being substituted for the actual power output signal of any unit in which said preselected condition has occurred, and (4) load-sharing means responsive to deviations between each individual power output signal and said total power output signal for controlling the fuel inputs to the respective engines in said units.
Claim 8
Dependent Claim
148 words
An isolated electrical power generation system having multiple isochronous, load-sharing engine-generator units, said system comprising the combination of (1) load sensing means for generating a signal representing the individual power output of each engine-generator unit, (2) load simulating means responsive to the occurrence of a preselected condition in an individual unit for producing a simulated power output signal for that unit representing a power output higher than the actual power output of the unit, (3) means for generating a signal representing the total power output of all the engine-generator units in said system, with said simulated power output signal being substituted for the actual power output signal of any unit in which said preselected condition has occurred, and (4) load-sharing means responsive to deviations between each individual power output signal and said total power output signal for controlling the fuel inputs to the respective engines in said units.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |