Abstract

This paper presents a laboratory model of synchronous generator excitation system based on National Instruments cRIO real-time industrial controller. It was specially designed for development and verification of classical linear and modern nonlinear excitation control algorithms. Real-time Clarke and Park transformations were implemented on the FPGA for measurements of the generator load angle, voltages and currents in the generator dq-frame. Automatic voltage regulator (AVR) and power system stabilizer (PSS2A) were implemented and experimentally verified on an 83kVA synchronous generator. Tests of step changes for generator voltage and mechanical power references, and test of transmission line disconnection were conducted. Experimental results were compared to simulation results of the designed model in Matlab/Simulink.

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