TY - GEN
T1 - AC-DC power-factor-corrected switching converter based on air-gap transformer and pulse position modulator for lighting applications
AU - Baca, Roberto
AU - Paredes, Gabriel Romero
AU - Peña, Ramón
PY - 2011
Y1 - 2011
N2 - In this paper an AC-DC power-factor-corrected switching converter based on pulse position modulator (PPM) is realized and applied to drive LED array. The PPM is realized using a Timer, which consists of a comparator and one RS flip-flop. The Timer is connected as an oscillator of lowfrequency around 5 kHz. The pulse position varies with the input rectified-voltage as modulating signal. AC-DC powerfactor- corrected switching converter with regulation of line voltage range (100 - 140Vac) is achieved by a certain value of primary inductance of the proposed air-gap transformer. The operating principles of the converter are described and also the approach used to achieve the power factor correction (PFC) through a control circuit based on PPM. Experimental results taken from the laboratory prototype are included.
AB - In this paper an AC-DC power-factor-corrected switching converter based on pulse position modulator (PPM) is realized and applied to drive LED array. The PPM is realized using a Timer, which consists of a comparator and one RS flip-flop. The Timer is connected as an oscillator of lowfrequency around 5 kHz. The pulse position varies with the input rectified-voltage as modulating signal. AC-DC powerfactor- corrected switching converter with regulation of line voltage range (100 - 140Vac) is achieved by a certain value of primary inductance of the proposed air-gap transformer. The operating principles of the converter are described and also the approach used to achieve the power factor correction (PFC) through a control circuit based on PPM. Experimental results taken from the laboratory prototype are included.
KW - air-gap transformer
KW - lighting applications
KW - power factor correction
KW - pulse position modulator
UR - http://www.scopus.com/inward/record.url?scp=84856323793&partnerID=8YFLogxK
U2 - 10.1109/CERMA.2011.54
DO - 10.1109/CERMA.2011.54
M3 - Contribución a la conferencia
AN - SCOPUS:84856323793
SN - 9780769545639
T3 - Proceedings - 2011 IEEE Electronics, Robotics and Automotive Mechanics Conference, CERMA 2011
SP - 296
EP - 300
BT - Proceedings - 2011 IEEE Electronics, Robotics and Automotive Mechanics Conference, CERMA 2011
T2 - 2011 IEEE Electronics, Robotics and Automotive Mechanics Conference, CERMA 2011
Y2 - 15 November 2011 through 18 November 2011
ER -