Method for Assessment of Operation of Analog Filters Installed in the Measuring Lines for Electrical Quantities of a Mining Machine’s Converter Power Supply System

A method for assessing the operation of analog filters installed in measuring paths current and voltage converters power supply system a mining machine motor, using example driving unit roadheader’s cutterhead, is presented. The suggested based on identification fundamental harmonic signals from sensors observed at input output tested filters, respectively. identified parameters before after filter allow determination points frequency’s characteristics their comparison with reference values. In new approach consists checking frequency basis basic harmonics signal (installed line electrical quantity) data acquired during start-up motor under normal operational conditions. Results are presented performance assessment, method, three years its system. For this purpose, empirical recorded roadheader test stand used. results compared theoretical filters.