Sistema não invasivo de monitoramento de baterias VRLA por método rápido de espectroscopia de impedância

Abstract

Many electrical and electronic devices use batteries as a source of energy, either as the main power supply or emergency supply. Among the different characteristics and construction materials, the Valve Regulated Lead Acid batteries are widely used in uninterruptible power supplies (UPS). This equipment has high applicability in highly critical machines, in order to provide contingency energy from batteries in eventual power outages from the primary source. Consequently, it is necessary constant monitoring of the batteries used and, in this sense, the development of Battery Monitoring Systems (BMS) is increasing. The purpose of this work was to develop an embedded system capable of collecting data for the diagnosis of the health status of VRLA batteries. Using a hardware topology applied to active harmonic correction filters, thus implementing a system capable of performing impedance spectroscopy on the batteries without desconnected them from the UPS. Successfully providing impedance parameters for future battery health state estimation systems.