Title :
Decomposition of the IEC flickermeter weighting curves [light flicker due to fluctuating current]
Author :
Wang, Chau-Shing ; Devaney, Michael J. ; Yang, Shih-Wei
Author_Institution :
Dept. of Electr. Eng., Nat. Changhua Univ. of Educ., Taiwan
Abstract :
Most people have experienced the sensation of varying light intensity from lamps as other loads connected to the same mains circuit draw fluctuating currents. This perceptible variation in light is called flicker. To measure flicker, The IEC has defined two weighting curves for flicker frequency on 230 V/50 Hz and 120 V/60 Hz systems, respectively. In this paper, we explore the relationship between these two curves and propose a light flicker weighting curve which is independent of the light bulb types as well as the supplying source system. This novel curve can be exploited to weight the light flicker spectrum for all kinds of lamps and then report the flicker severity index.
Keywords :
IEC standards; brightness; filament lamps; flicker noise; fluctuations; human factors; lighting; 120 V; 230 V; 50 Hz; 60 Hz; IEC 61000-4-15 flickermeter standard; IEC flickermeter weighting curves; flicker frequency; flicker measurement; flicker severity index; fluctuating currents; fluctuating electrical loads; human eye-brain response; incandescent lamps; light bulb types; light flicker; light flicker spectrum; light fluctuation; light intensity variation; varying lamp light intensity; voltage flicker; Circuits; Europe; Frequency response; Humans; IEC standards; Lamps; North America; Standards publication; Voltage fluctuations; Voltage measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351322