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1. WO2021038604 - TWO-SHAFT GAS TURBINE CONTROL SYSTEM ANO METHOD

Publication Number WO/2021/038604
Publication Date 04.03.2021
International Application No. PCT/IT2019/000067
International Filing Date 27.08.2019
IPC
F02C 3/10 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
04having a turbine driving a compressor
10with another turbine driving an output shaft but not driving the compressor
F02C 9/54 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
9Controlling gas-turbine plants; Controlling fuel supply in air-breathing jet-propulsion plants
48Control of fuel supply conjointly with another control of the plant
50with control of working fluid flow
54by throttling the working fluid, by adjusting vanes
CPC
F02C 3/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
04having a turbine driving a compressor
10with another turbine driving an output shaft but not driving the compressor
F02C 9/54
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
9Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
48Control of fuel supply conjointly with another control of the plant
50with control of working fluid flow
54by throttling the working fluid, by adjusting vanes
F05D 2260/96
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2260Function
96Preventing, counteracting or reducing vibration or noise
F05D 2270/024
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
01Purpose of the control system
02to control rotational speed (n)
024to keep rotational speed constant
F05D 2270/07
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
01Purpose of the control system
07to improve fuel economy
F05D 2270/304
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
30Control parameters, e.g. input parameters
304Spool rotational speed
Applicants
  • NUOVO PIGNONE TECNOLOGIE S.R.L. [IT]/[IT]
Inventors
  • GIUNTA, Bruno
  • PALLADINO, Marco
Agents
  • TIBURZI, Andrea
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TWO-SHAFT GAS TURBINE CONTROL SYSTEM ANO METHOD
(FR) PROCÉDÉ ET SYSTÈME DE COMMANDE DE TURBINE À GAZ À DEUX ARBRES
Abstract
(EN)
A two-gas shaft turbine control system (31) is disclosed. The gas turbine control system comprises a fuel controller (35), which receives a speed error signal, indicating whether the low-pressure turbine wheel (11) of the gas turbine (1) is rotating at the desired target speed. The gas turbine control system (31) further comprises an NGV controller (41), which receives a speed error signal, indicating whether the high-pressure turbine wheel (9) of the gas turbine engine (1) is rotating at the desired target speed. Two cross channel controllers are further provided. On the basis of a gas turbine model, a first cross channel controller (43) provides a fuel control modification signal, which is added to a control signal generated by the fuel controller (35). A second cross channel controller (45) provides an NGV control modification signal. The modification signals are aimed at reducing or cancelling the effect of mutual interaction between fuel control and NGV control. A two-shaft gas turbine engine system and a method of operation are further disclosed.
(FR)
L'invention concerne un système de commande de turbine à gaz à deux arbres (31). Le système de commande de turbine à gaz comprend un dispositif de commande de carburant (35) qui reçoit un signal d'erreur de vitesse, indiquant si la roue de turbine basse pression (11) de la turbine à gaz (1) tourne à la vitesse cible souhaitée. Le système de commande de turbine à gaz (31) comprend en outre un dispositif de commande NGV (41) qui reçoit un signal d'erreur de vitesse, indiquant si la roue de turbine haute pression (9) du moteur à turbine à gaz (1) tourne à la vitesse cible souhaitée. L'invention concerne en outre deux dispositifs de commande de canal transversal. Sur la base d'un modèle de turbine à gaz, un premier dispositif de commande de canal transversal (43) fournit un signal de modification de commande de carburant qui est ajouté à un signal de commande généré par le dispositif de commande de carburant (35). Un second dispositif de commande de canal transversal (45) fournit un signal de modification de commande NGV. Les signaux de modification visent à réduire ou annuler l'effet d'une interaction mutuelle entre la commande de carburant et la commande NGV. L'invention concerne en outre un système de moteur à turbine à gaz à deux arbres et un procédé de fonctionnement.
Also published as
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