A New Control Method of Interleaved Single-Stage Flyback AC–DC Converter for Outdoor LED Lighting Systems

Moon, SangCheol; Koo, Gwan-Bon; Moon, Gun-Woo

doi:10.1109/tpel.2012.2229471

Cited by 97 publications

(30 citation statements)

References 24 publications

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“…The idea behind this solution is connecting several PFC converters in parallel at its input. The PWM signal controlling each module is phase shifted in such a manner that the sum of the input currents of each module reduces the high frequency ripple of the current of the ac-dc LED driver [86], [198]- [201], or reshaping the input current achieve a higher PF [202]. In addition, the LED load can also be independent for each module, see Fig.…”

Section: ) Modular Solutionsmentioning

confidence: 99%

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

Castro

Vázquez

Arias

et al. 2019

IEEE Trans. Power Electron.

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Light-Emitting Diodes (LEDs) are coming strongly into the lighting market due to their advantages over conventional lighting solutions: energy efficient, controllable in both light and color, long lifetime, lack of a warm-up period and high power density. Some of these advantages will make LED light sources to be more than just a lightbulb, being able to transmit data, control light color, hue and intensity or even detect people in indoor environments. Nevertheless, these advantages attributed to LED capabilities are, in reality, achieved thanks to the LED driver. The present work reviews the current stateof-the-art strategies to drive LEDs from ac power grids with special emphasis into removing the most limiting component from the point of view of the lifetime, which is the electrolytic capacitor, while achieving a flicker-free performance of the light output of the LED driver. Moreover, it focuses on analyzing the required regulations, challenges and applicability of LED drivers in both single-phase and three-phase ac power grids.Note: This only applies for certified dimmable luminaires. Audible noiseLuminaire shall not emit noise above 24 dBA at 1 meter or less at the minimum output.0885-8993 (c)

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Section: ) Modular Solutionsmentioning

confidence: 99%

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

Castro

Vázquez

Arias

et al. 2019

IEEE Trans. Power Electron.

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“…The control system must modify D to control i S and v c state variables. These variations around the equilibrium point can be expressed by (15). (15) Where D̅, (V̅s) and X̅ denote values in the equilibrium point; and d̂, v̂s and x̂ are small-signal variations around the equilibrium point.…”

Section: Averaged Large-signal Model Of the Bridgeless Pfc Boost Convmentioning

confidence: 99%

“…The linearized state-space small-signal model of the bridgeless PFC boost converter can be calculated replacing, (13) and (16) in (15). The linearized model around the operating point can be expressed by (21) and (22): (21) (22) …”

Section: Linearized State-space Model Of the Bridgeless Pfc Boost Conmentioning

confidence: 99%

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Modeling and development of a bridgeless PFC Boost rectifier

Mejía-Ruiz

Muñóz-Galeano

López-Lezama

2017

Rev. Fac. Ing. Univ. Antioquia

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ABSTRACT:This paper proposes a model of the bridgeless PFC (Power Factor Correction) boost rectifier for control purposes based on an averaged small-signal analysis. From circuital laws, four operation modes are defined and explained, ensuring a relationship of physical variables in the converter. Based on the proposed model, two-loop cascade control structures composed of Proportional-Integral (PI) lineal controllers are proposed. Design consideration for dimensioning reactive elements is included, providing minimum values for their inductance and capacitance. Implementation of a laboratory prototype of 900 W and experimental results are presented to validate and reaffirm the proposed model. Experimental results demonstrate that the use of the bridgeless PFC boost converter model allows the Power Factor (PF) to be elevated up to 0.99, to reduce the THD i (Total Harmonic Distortion of the Current) to 3.9% and to control the DC voltage level on output. Compliance of standards of power quality EN 61000-3-2 (IEC 1000-3-2) are experimentally verified.

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“…Also, because they must process power-conversions twice, their total efficiency is lower. Recently, many single-stage AC/DC converters have been developed [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%