Análisis comparativo de desempeño del rectificador SCR y el PFC para la corrección del factor de potencia en el sistema de distribución

Abstract

The present analysis evaluates the performance of a power factor correction (PFC) system. This system uses a Cuk Converter operating in discontinuous conduction mode (DCM) integrated with an SCR rectifier. Two main scenarios are analyzed. In the first scenario, only the source and load are used, without compensation devices. In the second scenario, the PFC system is incorporated along with the SCR. The parameters considered include voltage, source current, power factor (PF), and total harmonic distortion (THD). In the uncompensated scenario, the system reaches a PF of 0.431. Additionally, it presents a high THD of 16.31%. These values significantly exceed the 5% limit stipulated by the IEEE 519-2014 standard. In contrast, by implementing the PFC along with the SCR, the PF improves to 0.99. The THD decreases to 1.10%, complying with regulatory standards. Furthermore, the source current adopts an almost ideal sinusoidal waveform. The presented results confirm that the Cuk Converter in DCM together with the SCR is an effective solution, as it reduces THD and improves the PF.