Development of a dynamic modeling and control system design methodology for gas turbines

A dynamic modeling and control system design methodology was developed to aid in the off-design performance analysis and control system design process. This capability was developed primarily to assist engine designers during the preliminary design stage, i.e., early in the gas turbine design process.;This thesis describes the dynamic modeling method developed; including all the thermodynamic and mathematical calculations for each section of the gas turbine. This model was then used to simulate engine-startup-to-design-point steady-state and transient performance. The resulting dynamic model was also used as a virtual test bed to assess engine performance at its operating limits.;The control system design methodology laid out a roadmap to control system design, which relied on a minimal amount of data available early in the gas turbine design process. Starting with the controller selection, the method then detailed how to translate control system requirements into engine protection limiters and fuel schedules. The resulting control system design was comprised of two sections: startup sequencing and engine control, which allowed gas turbine control throughout the entire operating regime.;A test case was conducted through the dynamic modeling and control system design for a 1-MW gas turbine marine application. The resulting dynamic model was then validated against GasTurb 10. Also, the proposed control system design was tested virtually with the help of the dynamic model to verify if the control system design requirements were met. Overall, the results showed excellent agreement with the GasTurb benchmark and it was found that the control system design method produced a useful preliminary design of the controls system.