Reduce the Harmonics from Mining Extraction Plants Operated with DC Motors

摘要

Converter bridges used for electric drive system generate voltage and current harmonics. This paper undertakes a study on the distorting running generated by winding installations electric drives with controlled rectifier and D.C. motor. A series of measurements have been done at the winding installation at Lupeni Mining Plant by means of a coprocessor for data acquisition, thus realizing a harmonic analysis of the voltage and current in the mains. In order to eliminate such harmonics have been used passive and active filters. We developed a compensator to which an active filter is applied. As a result of tests, good compensation characteristics were obtained.