ANÁLISE DA APLICABILIDADE DO FILTRO DIGITAL DE GOERTZEL NA MEDIÇÃO DE DESEQUILÍBRIOS DE TENSÃO.

This paper presents the use of a simple frequency detection algorithm in the calculation the Voltage Unbalance Factor. The Goertzel's algorithm allows the amplitude and phase of a specific harmonic can be found in a distorted signal without requiring large storage or processing capacity. Thus, it is possible to implement the symmetric components method to calculate the voltage unbalance factor using the Goertzel algorithm to obtain the phase angle and amplitude of the fundamental component of the voltages. The simulation is done through the Scilab tool. Signals are generated that correspond to the unbalanced voltages, both by module and by angle. The main program is implemented in order to provide the value of the unbalance factor for several situations. Then graphs are plotted with the waveforms of the voltages and their phasors. The analysis of the results shows the simplicity, usefulness and feasibility of the use of the Goertzel filter in applications related to the quality of electric energy, allowing, with less investment in hardware, it is possible to design equipment capable of detecting and measuring imbalances in a more reliable way And generalist. [ABSTRACT FROM AUTHOR]