ANALYTICAL STUDY AND IMPLEMENTATION OF DIGITAL EXCITATION SYSTEM FOR DIESEL GENERATORS

Sreehari.S, Deepak C R

Abstract: This paper aims at the study of DIGITAL EXCITATION SYSTEM [Micro Controller based automatic voltage regulator] employed for synchronous generators .The main component of the digital excitation system is the Automatic Voltage Regulator. This maintains the machine terminal voltage in desired reference, which can be varied in order to accomplish different power system requirements .The digital excitation system is developed from the digital signal processor whichwill capture of variables, performs mathematical operations and control algorithms and sends the control signals to the actuator. Automatic Voltage regulator (automatic/manual control), over excitation limiter, Under excitation limité and volts/hertz limiter are included in this digital excitation system. The exciter is controlled three phase SCR’s bridge

Keywords: DIGITAL EXCITATION SYSTEM, Automatic Voltage Regulator, SCR Bridge, synchronous generator,dsPIC30F4012

DOI: https://doi.org/10.15623/ijret.2013.0205007