Primary side regulated flyback AC-DC converter for LED's

Naraharisetti, Kali; Green, Peter B.

doi:10.1109/eit.2015.7293329

Cited by 6 publications

(2 citation statements)

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“…This method shows higher voltage stress on forward MOSFET which is approximately two times the input voltage plus the extra leakage spikes, this has lead to loss in efficiency. In [15] and [17], the authors discuss about primary side regulated flyback which becomes difficult to implement at 100 W, especially if the regulation is through auxiliary winding. In [16], authors use LLC half bridge resonant converter which is suitable for 100 W design, but the disadvantages include higher BOM cost and increased complexity.…”

Section: Arxiv:201212610v1 [Eesssy] 23 Dec 2020mentioning

confidence: 99%

Single Stage PFC Flyback AC-DC Converter Design

Naraharisetti

Channegowda²

2020

2020 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT)

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This paper discusses a 100 W single stage Power Factor Correction (PFC) flyback converter operating in boundary mode constant ON time methodology using a synchronous MOS-FET rectifier on the secondary side to achieve higher efficiency. Unlike conventional designs which use two stage approach such as PFC plus a LLC resonant stage or a two stage PFC plus flyback, the proposed design integrates the PFC and constant voltage regulation in a single stage without compromising the efficiency of the converter. The proposed design is advantageous as it has a lower component count. A design of 100 W flyback operating from universal input AC line voltage is demonstrated in this paper. The experimental results show that the power factor (PF) is greater than 0.92 and total harmonic distortion (iTHD) is less than 20% for a load varying from 25 % to 100 %. The experimental results show the advantages of a single stage design.

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Section: Arxiv:201212610v1 [Eesssy] 23 Dec 2020mentioning

confidence: 99%

Single Stage PFC Flyback AC-DC Converter Design

Naraharisetti

Channegowda²

2020

2020 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT)

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“…A large number of research work was done on LED lamps as an energy-efficient lamp, but most of them have been dedicated to design the circuit that links the network to the LED [14,15]. Several other works have focused on the light distribution and visual performance of LED lamps (e.g., [16]), however, a relatively small amount of works focused on the harmonic emissions of LED and CFL lamps and in strategies to reduce the harmonic distortion problem generated by them [12,17].…”

Section: Introductionmentioning

confidence: 99%

On the reduction of the third-order harmonic losses in low–voltage power cables used for feeding large LED and CFL lighting loads

Milardovich

Prevosto

Lara

et al. 2017

AEM

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An experimental investigation of diversity factors of CFL (compact fluorescent lamps) in combination with LED (light emitting diode) lamps is presented in this paper. Attention was paid to the reduction of low–order harmonic currents, especially the third one; which is mainly responsible for the strong increase in power losses in the neutral conductor of low–voltage installations. The harmonic currents drawn by several LED and CFL lamps with nominal powers < 25 W were first measured to investigate the electrical characteristics of individual lamps. In addition, a series of experiments was conducted in which LED lamps were powered between lines through small autotransformers thus avoiding the use of the neutral conductor. The results showed in both cases a sensible reduction of the harmonic current of third order and therefore a marked reduction of the power losses associated with them.

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