Title :
Phase-resolved thermal modeling of a fluorescent lamp electrode as a function of current waveshape and frequency
Author_Institution :
Adv. Transformer Co., Rosemont, IL, USA
Abstract :
A modeling technique for calculations of approximate phase resolved temperature profiles of a fluorescent lamp electrode is presented. Analytical expressions for instantaneous electrode temperature are derived by solving a set of simplified differential equations describing time domain electrode temperature dynamics. The electrode surface temperature fluctuations are a function of current waveshape and its operating frequency. The model shows that moderate temperature fluctuations may indicate the safe operating conditions as far as lamp life expectancy is concerned
Keywords :
differential equations; electrodes; fluorescent lamps; thermal analysis; time-domain analysis; current waveshape; differential equations; fluorescent lamp electrode; frequency; life expectancy; phase resolved temperature profiles; thermal analysis; thermal modeling; time domain; Cathodes; Circuits; Coatings; Electrodes; Electronic ballasts; Fluorescent lamps; Frequency; Ionization; Temperature; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
