Method and system for control of turbogenerator power and temperature
First Claim
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1. A method of controlling a turbine powered generating system having an energy storage device and a turbine coupled to an electric generator, the method comprising:
- maintaining the temperature of said turbine at a substantially constant temperature;
using said electric generator to satisfy the power demand on the system until the system is required to satisfy an additional power demand;
in response to said additional power demand, temporarily using said energy storage device to satisfy a portion of said power demand and said additional power demand;
increasing the speed of said turbine from the speed required to satisfy said power demand to a higher speed required to satisfy said power demand and said additional power demand; and
once said higher speed is achieved, using said electric generator to satisfy both said power demand and said additional power demand.
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Abstract
A power controller controls the turbine of a turbine powered generating system regardless of the load on said system to maximize the efficiency of the turbine and maintains the turbine at a substantially constant temperature during a system load change by using an energy storage device to provide power to the load while the turbine is changing speed to meet the new load demand.
223 Citations
18 Claims
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1. A method of controlling a turbine powered generating system having an energy storage device and a turbine coupled to an electric generator, the method comprising:
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maintaining the temperature of said turbine at a substantially constant temperature;
using said electric generator to satisfy the power demand on the system until the system is required to satisfy an additional power demand;
in response to said additional power demand, temporarily using said energy storage device to satisfy a portion of said power demand and said additional power demand;
increasing the speed of said turbine from the speed required to satisfy said power demand to a higher speed required to satisfy said power demand and said additional power demand; and
once said higher speed is achieved, using said electric generator to satisfy both said power demand and said additional power demand. - View Dependent Claims (2, 3, 4)
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5. A method of controlling a turbine powered generating system having an energy storage and discharge device and a turbine coupled to an electric generator, the method comprising:
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maintaining said turbine at a substantially constant temperature;
using said electrical generator to satisfy the power demand on said system until said system is required to satisfy a lower power demand;
in response to said lower power demand, temporarily providing additional power above said lower power demand on said generator and temporarily using said storage and discharge device to absorb at least a portion of said additional power;
decreasing the speed of said turbine from the speed required to satisfy said power demand to a lower speed required to satisfy said lower power demand; and
once said lower speed is achieved, using said electrical generator to satisfy said lower power demand. - View Dependent Claims (6, 7)
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8. A turbine powered generating system comprising:
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(a) a turbine having a fixed inlet nozzle;
(b) a generator coupled to said turbine, said generator capable of supplying the power demand on said system;
(c) an energy storage device; and
(d) a controller, coupled to both said storage device and said turbine, for maintaining said turbine at or near a predetermined temperature, said controller, in response to an additional power demand on said system, causing said energy storage device to satisfy a portion of said power demand and said additional power demand, to allow the speed of said turbine to increase to a higher speed at which said generator can satisfy said additional power demand and said power demand. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A turbine powered generating system comprising:
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a turbine having a fixed inlet nozzle and a predetermined maximum temperature;
a generator coupled to said turbine, said generator capable of supplying the power demand on said system;
an energy storage and discharge device, said storage and discharge device also capable of temporarily absorbing at least a portion of said power demand on said system; and
a controller, coupled to both said storage and discharge device and said turbine, for maintaining said turbine at or near said maximum temperature, said controller including means, in response to a decreased power demand on said system, for temporarily providing additional power above said power demand on said generator and for causing at least a portion of said additional power and said power demand to be shifted to said energy storage and discharge device to allow the speed of said turbine to decrease to a lower speed, where said generator can supply said decreased power demand.
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Specification