Invention Grant
- Patent Title: Model based bump-less transfer between passive and active mode operation of three-way check valve for liquid fuel delivery in gas turbine systems
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Application No.: US15210382Application Date: 2016-07-14
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Publication No.: US10443510B2Publication Date: 2019-10-15
- Inventor: Omprakash Pobbati , Sunil Unnikrishnan , Pradeep Kumar Vavilala , James Frederick Den Outer
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Hoffman Warnick LLC
- Agent Frank A. Landgraff
- Main IPC: F02C9/26
- IPC: F02C9/26 ; F02C9/32 ; F02C7/232 ; F02C9/40

Abstract:
A method using an inverse three-way valve model with feed-forward fuel flow control 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 that delivers liquid fuel to the turbine combustor nozzles. The method utilizes an inverse fluid flow model for a three-way check valve 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 used to modulate a fuel path bypass valve within the turbine fuel supply circulation system that provides the liquid fuel to the three-way valve during transfers of valve operation between passive and active mode operations.
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Information query
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