Gas turbine system, in particular for an electrically driven motor vehicle, and motor vehicle and method

A computer-readable storage medium having stored thereon program code for execution by a programmable processor device of a control unit of a gas turbine system, the gas turbine system comprising a gas turbine, wherein the gas turbine comprises at least one turbine wheel, at least one combustion chamber provided for combustion of a fuel-air mixture in the at least one combustion chamber and being in fluidic connection with the at least one turbine wheel for channeling a gas flow out of the at least one combustion chamber to the at least one turbine wheel, and at least one water injection assembly, which is constructed to feed water to the gas flow, wherein the gas turbine is constructed to be operated in a first provided operating mode with a first fuel-air mixture, in which a resulting generated gas flow has a temperature that is suitable for producing a temperature in an area of the at least one turbine wheel that is greater than a critical temperature of the at least one turbine wheel,

• wherein, when the program code is executed by the programmable processor device, the control unit is caused to:
• receive at least one input signal that indicates a temperature in the area of the at least one turbine wheel;
• generate a control signal for controlling a quantity of water, which is fed to the gas flow by the at least one water injection assembly to generate a resulting generated water-gas mixture, such that a temperature of the resulting generated water-gas mixture in the area of the at least one turbine wheel is less than the critical temperature of the at least one turbine wheel and greater than a threshold temperature value, wherein the threshold temperature is determined at least partially by a temperature of the resulting generated water-gas mixture that is required for preheating water, supplied to the at least one water injection assembly, using an exhaust gas heat recovery heat exchanger;
• and
• output the control signal to the at least one water injection assembly.

A gas turbine system for operating an electrical generator in an electric-powered motor vehicle, the gas turbine system comprising:

• a gas turbine;
• and
• a control unit, wherein:
• the gas turbine comprises at least one turbine wheel and at least one combustion chamber provided for combustion of a fuel-air mixture in the at least one combustion chamber and being in fluidic connection with the at least one turbine wheel for channeling a gas flow out of the at least one combustion chamber to the at least one turbine wheel,
• the gas turbine comprises at least one water injection assembly, which is constructed to feed water to the gas flow,
• the control unit is constructed to control a quantity of water that is fed to the gas flow by the at least one water injection assembly to generate a resulting generated water-gas mixture,
• the gas turbine is constructed to operate, in a first provided operating mode, with a first fuel-air mixture, in which a resulting generated gas flow has a temperature that is suitable for causing a temperature in an area of the at least one turbine wheel that is greater than a critical temperature of the at least one turbine wheel, and
• the control unit is constructed to control the quantity of water such that a temperature of the resulting generated water-gas mixture in the area of the at least one turbine wheel is less than the critical temperature of the at least one turbine wheel and greater than a threshold temperature value,
• wherein the threshold temperature value is determined at least partially by a temperature of the resulting generated water-gas mixture that is required for preheating water, supplied to the at least one water injection assembly, using an exhaust gas heat recovery heat exchanger.