MODEL BASED BUMP-LESS TRANSFER BETWEEN PASSIVE AND ACTIVE MODE OPERATION OF A THREE-WAY CHECK VALVE FOR LIQUID FUEL DELIVERY IN GAS TURBINE SYSTEM

A method using an inverse three-way valve model with feed-forward fuel flow control 300 is provided for controlling liquid fuel flow in a turbine power generation system to achieve a bump-less driven watts (dwatt) power output during fuel mode transitions between passive mode and active mode operati...

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Bibliographische Detailangaben
Hauptverfasser:	UNNIKRISHNAN, Sunil, VAVILALA, Pradeep Kumar, DEN OUTER, James Frederik, POBBATI, Omprakash
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	A method using an inverse three-way valve model with feed-forward fuel flow control 300 is provided for controlling liquid fuel flow in a turbine power generation system to achieve a bump-less driven watts (dwatt) power output during fuel mode transitions between passive mode and active mode operations of a three-way check valve 245 that delivers liquid fuel to the turbine combustor nozzles. The method utilizes an inverse fluid flow model 301 for a three-way check valve 245 which is based upon a valve position surrogate for the three-way check valve to develop a calculated estimate of a fuel spike/dwatt oscillation likely to occur during mode transitions of the three-way check valve and to produce a feed-forward control 303 used to modulate a fuel path bypass valve 220 within the turbine fuel supply circulation system that provides the liquid fuel to the three-way check valve 245 during transfers of valve operation between passive and active mode operations.