Title :
Anti-flicker digital PFC controller for HID lamp electronic ballast
Author :
Díaz, F. Javier ; López, Víctor M. ; Azcondo, Francisco J. ; Casanueva, Rosario ; Brañas, Christian
Author_Institution :
Univ. of Cantabria, Santander, Spain
Abstract :
HID lamps are sensitive to voltage supply fluctuations producing an effect on human visual perception, known as flicker. The fluctuations are typically caused by the repetitive variation in the power consumed by loads, or by the connection and disconnection of significant loads. New improvements are presented in the power factor correction (PFC) stage for electronic ballasts of high intensity discharge (HID) lamps. A universal low frequency voltage fluctuation detection algorithm is proposed, consistent with the maximum human light flickering perception. A correct actuation on the output voltage loop of a current sensorless digital control for the PFC stage reduces the lamp sensitivity to utility fluctuations. Simulation and experimental results show how lamp flicker is avoided and power factor correction is achieved without measuring the input current.
Keywords :
digital control; discharge lamps; electric current control; fluctuations; lamp accessories; power factor correction; HID lamp electronic ballast; antiflicker digital PFC controller; current sensorless digital control; high intensity discharge lamp; human visual perception; lamp sensitivity; maximum human light flickering perception; output voltage loop; power consumption; power factor correction stage; universal low frequency voltage fluctuation detection algorithm; utility fluctuation; voltage supply fluctuation; Bandwidth; Electronic ballasts; Fluctuations; High intensity discharge lamps; Steady-state; Voltage fluctuations; Voltage measurement;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119613