초록 ▼

A starting system (10) for a gas turbine (24) in accordance with the invention includes an electric motor (14); and a clutch (20) having an input (18) for receiving torque from the electric motor when the electric motor is activated during starting of the turbine and an output (22) for rotating the

A starting system (10) for a gas turbine (24) in accordance with the invention includes an electric motor (14); and a clutch (20) having an input (18) for receiving torque from the electric motor when the electric motor is activated during starting of the turbine and an output (22) for rotating the gas turbine during starting of the turbine, the clutch having a torque transfer characteristic between the input and the output with no torque being transferred when a rotational speed of the input is below a set speed which is a fraction of a speed at which the gas turbine is self-sustaining in producing output torque and transferring torque above the set speed between the input and output with the set speed being chosen with respect to a power output characteristic of the electric motor as a function of speed of the motor which produces acceleration of the motor to self-sustaining speed while minimizing energy required for starting.

대표청구항 ▼

A method of starting a gas turbine with a starting system having an electric motor coupled to an input of a clutch with an output of the clutch driving the gas turbine during starting comprising: activating the electric motor to cause the electric motor to accelerate to a first rotational speed with

A method of starting a gas turbine with a starting system having an electric motor coupled to an input of a clutch with an output of the clutch driving the gas turbine during starting comprising: activating the electric motor to cause the electric motor to accelerate to a first rotational speed without coupling torque from the input to the output of the clutch; and coupling torque from the input of the clutch to the output of the clutch after the motor has accelerated to above the first rotational speed with the first rotational speed being chosen with respect to a power output characteristic of the electric motor as a function of speed of the motor which produces acceleration of the turbine to self-sustaining speed while minimizing a total amount of energy required, represented by an integral of a curve plotting current versus revolutions per minute of the electric motor, for rotating the turbine from zero revolutions per minute to self sustaining speed.