METHOD FOR MONITORING THE OPERATING STATE OF AN ELECTRIC MACHINE, ARRANGEMENT HAVING AN ELECTRIC MACHINE, AND INFRARED SENSOR

摘要

The invention relates to a simply and simultaneously particularly effective method for monitoring the operating state of an electric machine (1), wherein - a radiation intensity is measured selectively in a wavelength range of an absorption band of an ionization product arising from partial discharges, particularly of ozone arising from the ionization of air, by an infrared sensor (10) aligned to at least a part of the electric machine (1) across an air gap, and - at least one parameter for the partial discharge activity within the electric machine (1) is determined from the measured radiation intensity as a measure of the operating state of the electric machine (1). The invention further relates to an arrangement having an electric machine (1) and an infrared sensor (10).