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Tapped-inductor buck HB-LED ac-dc driver operating in boundary conduction mode for replacing incandescent bulb lamps

Autor(es) y otros:
González Lamar, DiegoAutoridad Uniovi; Fernández Díaz, MarcosAutoridad Uniovi; Arias Pérez de Azpeitia, ManuelAutoridad Uniovi; Hernando Álvarez, Marta MaríaAutoridad Uniovi; Sebastián Zúñiga, Francisco JavierAutoridad Uniovi
Fecha de publicación:
2012
Versión del editor:
http://dx.doi.org/10.1109/TPEL.2012.2190756
Citación:
IEEE Transactions on Power Electronics, 27(10), p. 4329-4337 (2012); doi:10.1109/TPEL.2012.2190756
Descripción física:
p. 4329-4337
Resumen:

High-brightness light-emitting diodes (HB-LEDs) are recognized as being potential successors of incandescent bulb lamps due to their high luminous efficiency and long lifespan. To achieve these advantages, HB-LED ballast must be durable and efficient. Furthermore, for this specific application, ac-dc HB-LED ballast requires a high-step-down ratio, high power factor and low cost. This paper presents a tapped-inductor buck power factor corrector (PFC) operating in boundary conduction mode design for replacing incandescent bulb lamps. This low-cost solution presents a suitable high-step-down ratio without galvanic isolation in order to produce an output voltage of about 20 V from line voltage. In addition, the tapped-inductor buck PFC maintains high efficiency in comparison to other one stage solutions widely used to design low-cost ac-dc HB-LED drivers (e.g., flyback PFCs). Static analysis, input current distortion analysis, and an average small signal model of the tapped-inductor buck PFC have been implemented in this paper both to check the validity of the proposed solution and to provide a suitable design procedure of the ac-dc HB-LED driver. Finally, a 12-W experimental prototype was developed to validate the theoretical results presented

High-brightness light-emitting diodes (HB-LEDs) are recognized as being potential successors of incandescent bulb lamps due to their high luminous efficiency and long lifespan. To achieve these advantages, HB-LED ballast must be durable and efficient. Furthermore, for this specific application, ac-dc HB-LED ballast requires a high-step-down ratio, high power factor and low cost. This paper presents a tapped-inductor buck power factor corrector (PFC) operating in boundary conduction mode design for replacing incandescent bulb lamps. This low-cost solution presents a suitable high-step-down ratio without galvanic isolation in order to produce an output voltage of about 20 V from line voltage. In addition, the tapped-inductor buck PFC maintains high efficiency in comparison to other one stage solutions widely used to design low-cost ac-dc HB-LED drivers (e.g., flyback PFCs). Static analysis, input current distortion analysis, and an average small signal model of the tapped-inductor buck PFC have been implemented in this paper both to check the validity of the proposed solution and to provide a suitable design procedure of the ac-dc HB-LED driver. Finally, a 12-W experimental prototype was developed to validate the theoretical results presented

URI:
http://hdl.handle.net/10651/19556
ISSN:
0885-8993
DOI:
10.1109/TPEL.2012.2190756
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