Diseño e implementación de un analizador espectral de señales de voltaje y corriente para la obtención de valores DC, RMS, THD, factor de potencia, potencia activa, reactiva, aparente

Abstract

For this technical work, the development and implementation of a spectral analyzer of voltage and current signals to obtain DC, RMS, THD, power factor, active, reactive and apparent power values is proposed. For this purpose, a bibliographic review of spectral analysis theory is proposed, an analysis of available microcontrollers in the market capable of performing an efficient spectral analysis together with enough processing power to jointly manage conversions of analogous to digital variables, as well as handling an LCD module. Because a continuous signal will be sampled, the attenuation of the Gibbs phenomenon is required by windowing and overlapping the samples, and to attenuate the inherent covariance of stochastic signals, the Welch periodogram will be used. The information of the spectral analysis is shown in a graphical LCD RGB module, and in a complementary way a serial communication port will be incorporated that will allow to download the information into a computer using Labview software.