Evaluation of stability of several LED drivers in smart lighting applications

Author

Tetervenoks, Olegs ; Galkin, Ilya

Author_Institution

Riga Tech. Univ., Riga, Latvia

fYear

2014

fDate

14-14 Oct. 2014

Firstpage

48

Lastpage

51

Abstract

The operation stability and robustness are usually the main criteria for the practically implemented systems. This is especially critical in LED lighting applications, where voltage regulators are used to control current of nonlinear LED load. Also the parameters of the load significantly changes with the temperature change and bin change even for the same brand LEDs. The control system of LED driver must effectively compensate the above mentioned disturbances. In the scope of this article the inherent stability (open-loop frequency response) and the stability of closed loop-system of several converter topologies used in LED lighting applications are analyzed.

Keywords

LED lamps; driver circuits; electric current control; lighting; voltage regulators; LED driver control system; LED lighting application; bin change; closed loop-system stability; converter topology; current control; inherent stability; nonlinear LED load; open-loop frequency response; operation robustness; operation stability; smart lighting application; temperature change; voltage regulators; Control systems; Inductors; Light emitting diodes; Lighting; Stability analysis; Topology; Transfer functions; Control system analysis; Frequency response; LED lamps; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Electrical Engineering of Riga Technical University (RTUCON), 2014 55th International Scientific Conference on

Conference_Location

Riga

Print_ISBN

978-1-4799-7460-3

Type

conf

DOI

10.1109/RTUCON.2014.6998213

Filename

6998213