Effects of the LED modelling on the output capacitance of power converters

Salazar-Pérez, Daniel; Ponce-Silva, Mario; Aquí-Tapia, Juan Antonio; Garcı́a-Guzmán, Jesús; Pérez-Cruz, J. Humberto

doi:10.1049/iet-pel.2020.0181

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…From the analysis of the literature, there is a tendency to simplify the design of power converters by representing LED charging as a resistor [10]. Representing the LED load as a resistor implies that parameters such as voltage and current ripples that influence the behavior of the circuit are not considered [11].…”

Section: Methodsmentioning

confidence: 99%

Assessment of the Current and Voltage Ripples of a Buck Converter as a Driver for LEDs Using a Non-Resistive Model

Alvarado-Maldonado,

Ponce-Silva,

Olivar-Castellanos

2023

Eng

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The main contribution of this paper is the assets of the current and voltage ripples in a buck converter with an LED load. The results indicate that the ripples are different and that it is possible to reduce the passive filter concerning the model of the LED as a simple resistance. The paper presents the design and simulation of a buck converter as a power supply for an LED lamp. Modeling the LED as a resistor and a voltage source (SVRM), the equations to calculate the components of the circuit using the SVRM model are presented, where the Fourier series and phasors are used to calculate the output filter. The equations are validated with SPICE simulations. The results indicate that the SVRM model for the LED load affects the calculation of the output filter of the buck converter as well as the voltage and current ripples, making it a more precise design alternative to the proposed development.

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Section: Methodsmentioning

confidence: 99%