Study and control of a synchronous generator in a SMIB connected to an infinite power system with DFL

In this paper a new control structure based on the application of the method of exact linearization by feedback (Direct Feedback Linearization - DFL) for a synchronous generator is presented. The power system model consists of a single axis flat rotor machine, connected to an infinite power bus. This way the sub transient phenomena are ignored. The global system consisting of a turbine and a generator that produces the electrical output power, is coupled and it presents multiplicative and harmonic non-linearity's. The application of a DFL on the output voltage equation expressed as a function of the electrical system parameters referred to the generator, practically turns the non linear system into two uncoupled subsystems with the possibility of independently controlling the output voltage and the frequency.