公开(公告)号：US20180016991A1

公开(公告)日：2018-01-18

申请号：US15210382

申请日：2016-07-14

Applicant: General Electric Company

Inventor： Omprakash POBBATI ,  Sunil UNNIKRISHNAN ,  Pradeep Kumar VAVILALA ,  James Frederick DEN OUTER

IPC: F02C9/32 ,  F02C9/26 ,  F02C7/232

CPC classification number: F02C9/32 ,  F02C7/232 ,  F02C9/263 ,  F02C9/40 ,  F05D2270/44 ,  F05D2270/71

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.