Method for starting a turbomachine

A method of actively controlling a Load Commutated Inverter (LCI) during a starting process of the gas turbine, the method comprising:

• determining a target range for a parameter, wherein the parameter is associated with an operation of a gas turbine;
• determining a measured value of the parameter;
• determining a parameter difference, wherein the parameter difference is a difference between the target range and the measured value;
• and
• adjusting an operating schedule of the LCI based on the parameter difference;
• wherein the method continuously adjusts an output of the LCI based on the parameter difference during a start-up process of the gas turbine;
• and wherein the output contributes to the acceleration of the gas turbine, and wherein the gas turbine comprises a rotor, wherein the parameter comprises at least one of:
• an exhaust temperature, a firing temperature, an ambient condition, rotor speed, rotor acceleration, a desired start-up time, or a physical parameter of the gas turbine, and further wherein the step of determining a target range for a parameter, comprising the steps of:
• selecting a first parameter related to the operation of the gas turbine;
• selecting a second parameter related to the operation of the gas turbine;
• and
• determining a value of the second parameter by utilizing an algorithm, wherein the algorithm comprises a look-up table that receives real-time data on the first parameter;
• wherein the value of the second parameter is an output of the algorithm;
• and wherein the value of the second parameter comprises the target range of the parameter.

A system for actively controlling a Load Commutated Inverter (LCI) during a starting process of the gas turbine, the system comprising:

• a gas turbine integrated with an LCI;
• and
• a control system configured for performing the steps of:
• determining a target range for a parameter, wherein the parameter is associated with an operation of the gas turbine;
• determining a measured value of the parameter;
• determining a parameter difference, wherein the parameter difference is a difference between the target range and the measured value;
• and
• adjusting an operating schedule of the LCI based on the parameter difference;
• wherein the control system continuously monitors and adjusts an output of the LCI based on the parameter difference;
• wherein the output contributes to the acceleration of the gas turbine during a start-up process, and wherein the gas turbine comprises a rotor, and wherein the parameter comprises at least one of:
• an exhaust temperature, a firing temperature, an ambient condition, rotor speed, rotor acceleration, a desired start-up time, or a physical parameter of the gas turbine, and further wherein:
• the step of determining a target range for a parameter, further comprises the steps of:
• selecting a first parameter related to the operation of the gas turbine;
• selecting a second parameter related to the operation of the gas turbine;
• and
• determining a value of the second parameter by utilizing an algorithm, wherein the algorithm comprises a look-up table that receives real-time data on the first parameter;
• wherein the value of the second parameter is an output of the algorithm;
• and wherein the value of the second parameter comprises the target range of the parameter.