Dynamic Modeling of a Synchronous Generator Using T-S Fuzzy Approach

Abstract— The dynamic behavior of power systems is affected by the interactions between linear and nonlinear components. To analyze those complicated power systems, the linear approaches have been widely used so far. Especially, a synchronous generator has been designed by using linear models and traditional techniques. However, due to its wide operating range, complex dynamics, transient performances, and its nonlinearities, it cannot be accurately modeled as linear methods based on smallsignal analysis. This paper describes an application of the Takaki-Sugeno (T-S) fuzzy method to model the synchronous generator in a single-machine infinite bus (SMIB) system. The T-S fuzzy model can provide a highly nonlinear functional relation with a comparatively small number of fuzzy rules. The simulation results show that the proposed the T-S fuzzy modeling captures all dynamic characteristics for the synchronous generator, which are exactly same as those by the conventional nonlinear modeling methods. Keywords— dynamic modeling; power system; synchronous generator; T-S fuzzy.