US 12,331,690 B2
Method of controlling the renewable energy use in an LNG train
Giuseppe Sassanelli, Florence (IT); Giampaolo Gabbi, Florence (IT); Carmine Allegorico, Florence (IT); and Giulia Rontini, Florence (IT)
Assigned to Nuovo Pignone Tecnologie—S.R.L., Florence (IT)
Appl. No. 18/706,561
Filed by NUOVO PIGNONE TECNOLOGIE—S.R.L., Florence (IT)
PCT Filed Nov. 4, 2022, PCT No. PCT/EP2022/025497
§ 371(c)(1), (2) Date May 1, 2024,
PCT Pub. No. WO2023/083490, PCT Pub. Date May 19, 2023.
Claims priority of application No. 102021000028559 (IT), filed on Nov. 10, 2021.
Prior Publication US 2025/0012220 A1, Jan. 9, 2025
Int. Cl. F02C 7/36 (2006.01); F02C 6/06 (2006.01); F25J 1/02 (2006.01)
CPC F02C 7/36 (2013.01) [F02C 6/06 (2013.01); F25J 1/0283 (2013.01); F25J 1/0287 (2013.01); F05D 2220/76 (2013.01); F25J 2260/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of controlling the renewable energy absorbed by a hybrid power train for driving a load, wherein the hybrid power train comprises one or more equipment, comprising a gas turbine and an electric motor/generator, wherein the electric motor/generator and is connected to a power generation plant (PG) and to a renewable energy source (PV), wherein the method comprises the steps of:
detecting the one or more input parameters (Pij) of each equipment to determine the initial condition of at least one of the equipment;
applying a first conditional statement, wherein the first conditional state-ment determines a combined membership function (Mem+vfd), of at least one or more equipment, having two or more qualification states as output, so that
if the combined membership functions (Mem+vfd) of the equipment has qualification state such that the checked equipment operate correctly, then the step of applying a second conditional statement is carried out to the renewable energy source (PV), so as to determine the membership functions (Mpv) of the renewable energy source (PV) having two or more qualification states as output, so that
if the membership functions (Mpv) of the renewable energy source (PV) has a qualification state such that the renewable energy source (PV) does not operate correctly, then the step of applying a third conditional statement to the power generation plant (PG) is carried out, so as to determine the membership functions (Mpg) of the power generation plant (PG) having in two or more qualification states as output, so that
if the membership functions (Mpg) of the power generation plant (PG) has a qualification state such that power generation plant (PG) does not operate correctly, then change of load split between the gas turbine and the electric motor/generator;
if the membership functions (Mpv) of the renewable energy source (PV) has a qualification state such that the renewable energy source (PV) operates in a correct way, then the power generated by the gas turbine and the energy absorbed by the renewable energy source (PV) is determined according to an objective function;
else, if the combined membership functions (Mem+vfd) has qualification state such that the equipment checked does not operate correctly, then carrying out the load split between the gas turbine and the electric motor/generator.