Adaptive Voltage Control for Bidirectional Converter in Flicker-Free Electrolytic Capacitor-Less AC–DC LED Driver

He, Jiexiu; Ruan, Xinbo; Zhang, Li

doi:10.1109/tie.2016.2608767

Cited by 80 publications

(37 citation statements)

References 15 publications

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“…[151], [154] No electrolytic: [148]- [150], [152]- [154] Active: multi-stage -active filter [140]- [146]  Yes. [140], [141], [143], [144] -Analog: [140], [143], [144] -Digital: [142], [145], [146] Yes. [140], [146] No electrolytic: [140]- [146] Modular [86], [139], [198]- [202]  No galvanic isolation: [139], [201] 91 [198], 92, 94 [139], [199] 99 <10…”

Section: -99 <10mentioning

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: -99 <10mentioning

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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show abstract

“…Moreover, the second stage curtails the low frequency ripple introduced by the non-electrolytic capacitor. [64][65][66][67][68][69] The important features of various active PFC cell circuits are given in Table 4. Moreover, a current loop is always necessary in the second stage for constant current control.…”

Section: Classification Of Led Driversmentioning

confidence: 99%

“…The different PFC cells are active and passive type. [64][65][66][67][68][69] The important features of various active PFC cell circuits are given in Table 4. Power factor correction (PFC) or harmonic distortion should comply with the IEC 61000-3-2 standards.…”

Section: Classification Of Led Driversmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.

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“…[10][11][12][13][14][15] Particularly, in the literature, 12 IEEE-P1789 Recommended Practices are adopted as evaluation criteria for output current ripple. For example, a number of methods were proposed to reduce output current ripple using power factor correction (PFC) circuits based on flyback converters, etc.…”

Section: Introductionmentioning

confidence: 99%

“…and supplemented with bidirectional converters or other auxiliary circuits. [10][11][12][13][14][15] Particularly, in the literature, 12 IEEE-P1789 Recommended Practices are adopted as evaluation criteria for output current ripple. There is also a method to reduce output current ripple using a two-stage configuration of PFC circuit and DC-DC converter, in which the second stage is asymmetrical half-bridge (AHB).…”

Section: Introductionmentioning

confidence: 99%

Output Current Ripple Reduction of LED Driver Using Ceramic-Capacitor-Input Circuit and Buck-Boost Converter

Kadota

Hirano

Hatakeyama³

et al. 2019

IEEJ Trans. IA

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This article proposes an LED driver that consists of a ceramic-capacitor-input rectifier and a buck-boost converter. The LED driver has an advantage of long life because it does not contain any electrolytic capacitors. However, the issue with electrolytic capacitor-less LED driver is that the ripple of the smoothed voltage becomes large due to insufficient capacitance of the smoothing capacitor. The proposed method, which uses the discontinuous current mode of a buck-boost converter, reduces the output current ripple under such conditions. Experimental results using a 5.7 W LED driver prototype demonstrate that the proposed method reduces the output current ripple and that the percent flicker becomes 4.4%, which is smaller than the recommended upper limit of 8%. K E Y W O R D Sbuck-boost converter, ceramic capacitor, discontinuous current mode, electrolytic capacitor-less, LED driver 26

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Adaptive Voltage Control for Bidirectional Converter in Flicker-Free Electrolytic Capacitor-Less AC–DC LED Driver

Cited by 80 publications

References 15 publications

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

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

An overview of energy efficient solid state LED driver topologies

Output Current Ripple Reduction of LED Driver Using Ceramic-Capacitor-Input Circuit and Buck-Boost Converter

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