Simplified electrical modelling of power LEDs for DC–DC converter analysis and simulation. (20th April 2017)

• Record Type: Journal Article
• Authors: Osorio, R.; Alonso, J.M.; Pinto, S.E.; Martínez, G.; Vázquez, N.; Ponce‐Silva, M.; Martínez, A.J.
• Is Part Of: International journal of circuit theory and applications. Volume 45:Number 11(2017:Nov.)
• Page Start: 1760
• Page End: 1772
• Publication Date: 2017-04-20
• Subjects: power LED -- modelling -- simulation -- LED driver; Electric circuit analysis -- Periodicals; 621.319205
• DOI: 10.1002/cta.2355
• Languages: English
• ISSNs: 0098-9886

Abstract

Summary: This paper presents a model of power light emitting diodes (LEDs) based on electrical variables and considering the concept of LED 'equivalent resistance', which has previously been used in discharge lamp modelling and is suitable to achieve fast simulations of LED converter systems. The model can be obtained with only some simple electrical measurements, thus making its implementation quite straightforward. The proposed model is oriented to the electronic engineering area, and it has special application for the simulation of the electrical behaviour of LEDs and dc–dc converter systems by using software like Simulink. In addition, the proposed model can also be employed for the theoretical analysis and design of LED drivers. Experimental and simulation results are obtained proving the feasibility of the proposed model. Copyright © 2017 John Wiley & Sons, Ltd. Abstract : A nonlinear electrical LED model based on the concept of 'equivalent resistance' with a simple parameter extraction process is presented as alternative for the simulation of the electrical behavior of power LEDs–DC–DC converter systems.