System and method for efficient load following control logic for a turbogenerator operating in stand-alone mode
AssigneeGeneral Electric Company
InventorTim Keller
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for controlling the rotational speed of a turbogenerator in stand-alone mode to account for a present operating load and a transient reserve capability. A base speed set point may be received, comprising a baseline speed setting for the turbogenerator. A speed offset may be determined comprising an adjustment to the base speed set point required to accommodate the transient reserve capability. An adjusted speed set point may be produced by combining the base speed set point and the speed offset. The rotational speed of the turbogenerator may then be set to the adjusted speed set point.
Claims25
A method for controlling the rotational speed of a variable speed turbogenerator operating in stand-alone mode to account for a present operating load on said variable speed turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said variable speed turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- and
- setting the rotational speed of said variable speed turbogenerator to said adjusted speed set point.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load on said turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- and
- setting the rotational speed of said turbogenerator to said adjusted speed set point,
- wherein said base speed set point comprises a baseline speed setting for said turbogenerator calculated based on ambient conditions of said turbogenerator.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load on said turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- and
- setting the rotational speed of said turbogenerator to said adjusted speed set point,
- wherein determining said speed offset comprises the steps of:
- receiving a sensor feedback signal indicating the present operating load of said turbogenerator;
- determining the transient reserve capability of the turbogenerator based on the present operating load and the operational limits;
- and
- consulting a look-up table.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load on said turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- and
- setting the rotational speed of said turbogenerator to said adjusted speed set point,
- wherein determining said speed offset comprises the steps of:
- receiving a sensor feedback signal indicating the present operating load of said turbogenerator;
- determining the transient reserve capability of the turbogenerator based on the present operating load and operational limits;
- and
- calculating said speed offset using at least one mathematical function.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load on said turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- filtering the adjusted speed set point using an engine dynamics filter;
- and
- setting the rotational speed of said turbogenerator to the filtered speed set point.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load on said turbogenerator and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate the present operating load and the transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point wherein trimming said adjusted speed set point preserves a reserve temperature margin to account for the transient reserve capability.
A method for controlling the rotational speed of a variable speed turbogenerator operating in stand-alone mode to account for a present operating load and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said variable speed turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate said present operating load and said transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point;
- and
- setting the rotational speed of said variable speed turbogenerator to the trimmed speed set point.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate said present operating load and said transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point;
- and
- setting the rotational speed of said turbogenerator to the trimmed speed set point,
- wherein said base speed set point comprises a baseline speed setting for said turbogenerator based on ambient conditions of said turbogenerator.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate said present operating load and said transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point;
- and
- setting the rotational speed of said turbogenerator to the trimmed speed set point,
- wherein determining said speed offset comprises the steps of:
- receiving a sensor feedback signal indicating the present operating load of said turbogenerator;
- determining the transient reserve capability of the turbogenerator based on the present operating load;
- and
- consulting a look-up table.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate said present operating load and said transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point;
- and
- setting the rotational speed of said turbogenerator to the trimmed speed set point,
- wherein trimming said adjusted speed set point preserves a reserve temperature margin to account for said transient reserve capability.
A method for controlling the rotational speed of a turbogenerator operating in stand-alone mode to account for a present operating load and a transient reserve capability, comprising the steps of:
- receiving a base speed set point for said turbogenerator;
- determining a speed offset comprising an adjustment to said base speed set point required to accommodate said present operating load and said transient reserve capability;
- determining an adjusted speed set point by combining said speed offset with said base speed set point;
- trimming the adjusted speed set point;
- setting the rotational speed of said turbogenerator to the trimmed speed set point, and
- filtering said adjusted speed set point with an engine dynamics filter prior to trimming.
Dependencies are inferred from the claim text.