INFRARED OPTICAL-FIBER WIND-GENERATOR TEMPERATURE MONITORING SYSTEM

摘要

FIELD: fiber-optic systems.;SUBSTANCE: invention relates to an infrared fiber-optic system intended for monitoring temperature and diagnostics of accessories of wind generators (bearings and windings of electric motors), which operate in a temperature range from +300 to -20 °C. Infrared fiber-optic wind turbine temperature monitoring system includes IR radiation source, transmission channel and receiver. At that, transmission channel is made in the form of fiber assembly with diameter of 990 mcm and length of 5 m, consisting of 91 light-emitting diodes each with diameter of 90 mcm based on Ag_1-xTl_xBr_1-0.54xI_0.54x system monocrystals, where 0.03≤x≤0.31, on input end of which there is a cylindrical lens with focal distance of 30 mm, optically connected to IR radiation source, and at the output end there is a collecting lens with the same focal distance, optically connected to the IR radiation receiver. Besides, the IR radiation source is represented by wind turbine bearings or windings, the thermal imager is used as the receiver, and the lenses are made from the same monocrystals as the fiber assembly.;EFFECT: high accuracy and reliability of the temperature control system.;1 cl, 1 dwg