Pulsed current source with active control of the on-time current for LED lamp driver applications

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Pulsed current source with active control of the on-time current for LED lamp driver applications

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Brañas Reyes, Christian / Azcondo Sánchez, Francisco Javier / Casanueva Arpide, Rosario / Díaz Rodríguez, Francisco Javier

Abstract

This paper presents a simplified envelope model to study the dynamics of a phase-controlled resonant converter suitable to drive light emitting diode (LED) lamps. The approximate closed form of the transfer function is obtained from the proposed reduced-order model. The fast dynamics of the resonant converter allows us implementing a pulsed current source with active control of the on-time-current free of instabilities and flicker effect with a type II or integral-single-lead controller. A 120W prototype intended for street lighting applications has been built to validate the study. ; This work is sponsored by the Spanish Ministry of Science and the EU through the project CICYT-FEDER- TEC2011- 23612: “Power conversion with new digital control techniques and soft-saturation magnetic cores”.

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Title :

Pulsed current source with active control of the on-time current for LED lamp driver applications

Contributors:

Brañas Reyes, Christian (author) / Azcondo Sánchez, Francisco Javier (author) / Casanueva Arpide, Rosario (author) / Díaz Rodríguez, Francisco Javier (author) / Universidad de Cantabria

Publication date :

2014-01-01

Remarks:

40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), Dallas, 2014, 1727-1732

DOI :

https://doi.org/10.1109/IECON.2014.7048735

Type of media :

Conference paper

Type of material :

Electronic Resource

Language :

English