DESIGN OF EXCITATION SYSTEM FOR SYNCHRONOUS GENERATOR USING DC-DC CONVERTER

Abstract

The dissertation titled as, "DESIGN OF EXCITATION SYSTEM FOR SYNCHRONOUS GENERATOR USING DC-DC CONVERTER", deals with the introduction of the basics of the excitation system, synchronous generator along with relevant power electronics, power converters and PWM technique. The basic aim of the dissertation is to design an excitation system for synchronous generator using power converter that is the application of DC - DC boost converter, which can control the terminal voltage under all kinds of operation conditions. It includes the analysis of the boost converter along with its designing and simulation at different loads in open - loop and close - loop conditions. The methodology for the design and development of excitation system for synchronous generator by DC-DC converters using PWM technique, involves sensing of the terminal voltage of the synchronous generator compared to a constant value (which is the supposed value of the terminal voltage of the generator as per the design parameters).Thereafter the difference of the two is amplified and a pulse is generated by It the pulse width modulator proportional to the difference, which is further given to the switch like IGBT or MOSFET which generates a pulse, which in turn changes the duty ratio and maintains the output again, so this forms a complete close loop system. The whole system, that is synchronous generator integrated with the close - loop boost converter, is given different load conditions and the outputs are simulated in Simulink, which concludes that the terminal voltage of the synchronous generator is maintained same all-time.