Methodology to estimate parameters of an excitation system based on experimental conditions

• Published in: Electric power systems research Vol. 81; no. 1; pp. 170 - 176
• Main Authors: Saavedra-Montes, A.J., Ramirez-Scarpetta, J.M., Malik, O.P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 2011; Elsevier
• Subjects: Applied sciences; Electrical engineering. Electrical power engineering; Electrical machines; Exact sciences and technology; Excitation system; Experimental conditions; Generator magnetic saturation; Parameter estimation; Pseudo random binary signal; Regulation and control; Sampling period; Experimental conditions; Parameter estimation; Pseudo random binary signal; Generator magnetic saturation; Excitation system; Sampling period; Random signal; Closed loop; Control system; Magnetic saturation; Experimental study; Controlled rectifier; Algorithm; Standard model; System simulation; Sampling; Comparative study; Excitation systems
• ISSN: 0378-7796; 1873-2046
• DOI: 10.1016/j.epsr.2010.08.004

A methodology to estimate the parameters of a potential-source controlled rectifier excitation system model is presented in this paper. The proposed parameter estimation methodology is based on the characteristics of the excitation system. A comparison of two pseudo random binary signals, two sampling periods for each one, and three estimation algorithms is also presented. Simulation results from an excitation control system model and experimental results from an excitation system of a power laboratory setup are obtained. To apply the proposed methodology, the excitation system parameters are identified at two different levels of the generator saturation curve. The results show that it is possible to estimate the parameters of the standard model of an excitation system, recording two signals and the system operating in closed loop with the generator. The normalized sum of squared error obtained with experimental data is below 10%, and with simulation data is below 5%.