Journal of South China University of Technology(Natural Science) >

2016 , Vol. 44 >Issue 4: 34 - 39

DOI: https://doi.org/10.3969/j.issn.1000-565X.2016.04.006

Power & Electrical Engineering

Power Supply Driven by Cuk Constant Current with Active Ｒipple Compensation for LED Headlamp

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  • College of Electrical Engineering//State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400044,China
唐治德(1958-) ，男，教授，主要从事大功率LED 照明、X 光机高压电源的研究．

Received date: 2015-07-21

  Revised date: 2015-12-22

  Online published: 2016-04-12

Supported by

Supported by the National Natural Science Foundation of China( 50877082)

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Abstract

As the lifespan of the output filter's electrolytic capacitor in general lighting LED power supply does not match LED's long lifespan,a LED driving circuit based on Cuk with active ripple compensation is proposed.In this circuit,the active ripple compensation branch is used to replace the output filter's electrolytic capacitor to offset the inductor's ripple current,which provides the LED array with a constant DC and further with ideal driving state.This paper describes the principle and implementation of the active ripple compensation circuit,analyzes the loss and efficiency of LED driving circuit based on the Cuk with active ripple compensation,and designs and fabricates an LED power supply with an output power of 22W based on the Cuk with active ripple compensation and hysteresis current control.Simulated and experimental results indicate that the proposed power supply is feasible.

Key words： driving power; light-emitting diode; ripple compensation; electrolytic capacitor; hysteresis current control

Cite this article

TANG Zhi-de WANG Ｒui YANG Xi . Power Supply Driven by Cuk Constant Current with Active Ｒipple Compensation for LED Headlamp[J]. Journal of South China University of Technology(Natural Science), 2016 , 44(4) : 34 -39 . DOI: 10.3969/j.issn.1000-565X.2016.04.006

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