Synchronous Generator Static Excitation Control Using Two-Switch Forward Converter

This paper presents the design and simulation of a static excitation system for a 5 kVA Synchronous Generator (SG) using a Two-Switch Forward (TSF) converter. The objective is to evaluate the use of the converter to control the generator field voltage and regulate the system terminal voltages. A standalone generation system is considered, where the converter dc bus is supplied by a battery energy storage system (BESS) or photovoltaic (PV) panels set. The control structure is composed of two loops, the external one controls the terminal voltage and generates the reference for the internal one, which controls the field voltage, responsible for the SG excitation. Simulation results show the suitable performance of the excitation system under output disturbances.