Dimmable single-stage SEPIC-&amp;#x0106;uk converter for LED lighting with reduced storage capacitor

Cosetin, Marcelo R.; Bolzan, Thais E.; Luz, Paulo César Vargas; Silva, M. F. da; Alonso, J.M.; Prado, R.N. do

doi:10.1109/ias.2014.6978423

Cited by 6 publications

(8 citation statements)

References 14 publications

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“…An efficiency of 90.1% was obtained from a 107‐W prototype, which does not employ electrolytic capacitors. Its performance is also compared with that of a SEPIC–Ćuk converter in Cosetin et al, 30 which requires higher component count and presents lower efficiency. A thorough comparison between the SEPIC–buck and single‐stage SEPIC converters was also presented by Cosetin et al 31 Even though the efficiency of the single‐stage driver is higher, the integrated approach requires a much smaller filter capacitance.…”

Section: Introductionmentioning

confidence: 99%

Non‐isolated high step‐up/step‐down quadratic converter for light‐emitting diode driving

Corrêa

Morais

Tofoli

2021

Circuit Theory & Apps

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Summary This work presents an alternating current–direct current (AC–DC) single‐switch quadratic single‐ended primary inductance converter (SEPIC) for applications involving light‐emitting diodes (LEDs). The proposed topology is basically composed of two cascaded SEPIC stages, where the first one provides input power factor correction (PFC) and the second one allows obtaining power control (PC) for dimming purposes. It is also capable of providing high step‐up or step‐down without requiring the use of extreme duty ratios. A detailed qualitative analysis is derived, from which it is possible to obtain a consistent design procedure. Experimental results from a laboratory prototype are thoroughly discussed aiming at validating the theoretical assumptions.

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Section: Introductionmentioning

confidence: 99%

Non‐isolated high step‐up/step‐down quadratic converter for light‐emitting diode driving

Corrêa

Morais

Tofoli

2021

Circuit Theory & Apps

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“…No entanto, tais componentes têm menor densidade energética (valor de capacitância menor para o mesmo volume), além de valor aquisitivo superior (Buiatti et al, 2009;Epcos, 2011). Esses fatos implicam a necessidade de reduzir o valor da capacitância utilizada no projeto do driver (Almeida et al, 2012;Alonso et al, 2012;Cosetin et al, 2013;Cosetin et al, 2014;Almeida et al, 2015).…”

Section: Halogena Incandescanteunclassified

“…Esta topologia é utilizada nos trabalhos de (Alonso, Gacio, et al, 2011;Alonso, Viña, et al, 2011;Almeida et al, 2012;Cosetin et al, 2013;Cosetin et al, 2014;Gacio et al, 2015;Lam e Jain, 2015;Soares et al, 2016) e em vários outros estudos. Um conversor integrado é a combinação resultante de dois ou mais estágios de conversão, utilizando um mesmo interruptor ativo.…”

Section: Conversor De Múltiplos Estágios Integradosunclassified

“…Como definido anteriormente, é aconselhável que se escolha o valor deste componente, dentro de uma faixa, definida pelas equações (4.19) 3,3 µF e (4.20)100 nF. Também CS1(1,02µF) V CS1(3,3µF) (Cosetin et al, 2014), que pode ter maior valor experimental, tendo em vista que a simulação ocorre em um ambiente idealizado.…”

Section: Particularidades Apresentadas Na Escolha Do Capacitor C S1unclassified

“…Como o estágio CFP opera em MCD e o capacitor de barramento C Bus é considerado grande suficiente para manter a tensão constante na saída, pode-se considerar o estágio CFP como uma fonte de tensão contínua, vista pela entrada do segundo estágio (CP). Possibilitando, assim, que o modelo dinâmico do conversor proposto seja aproximado apenas ao seu segundo estágio (Cosetin et al, 2014). Reduzindo assim a modelagem do conversor proposto, a de um conversor CC SEPIC operando em MCC, com o objetivo de encontrar a função de transferência que descreva a dinâmica do sistema, em função de variações na razão cíclica.…”

Section: 4 200 5 2 2000unclassified

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Conversor SEPIC quadrático não isolado sem capacitores eletrolíticos para acionamento de iluminação a LED

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Non‐isolated high step‐up / step‐down DC–DC quadratic Ćuk converter

Oliveira

Ribeiro

Morais

et al. 2021

Int Trans Electr Energ Syst

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This work presents a non-isolated DC-DC quadratic Cuk topology, which results from the cascade connection of two conventional Cuk converters. Using the graft scheme and rearranging the power stage, it is possible to obtain a single-switch version of the converter with fewer components when compared with its two-switch counterpart. The converter can provide both voltage stepdown and step-up by varying the duty cycle imposed to the active switch, this being an interesting solution for applications that demand a wide conversion range. Both the current drawn from the source and supplied to the output stage are non-pulsating when the converter operates in continuous conduction mode (CCM), contributing to the reduction of electromagnetic interference (EMI) levels. Both the input voltage and output voltage present the same polarity as well. A comprehensive mathematical analysis is derived for the converter operating in step-up and step-down modes, as it is possible to obtain a consistent design procedure. A laboratory prototype is also implemented and thoroughly assessed experimentally to validate the theoretical assumptions.

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Dimmable single-stage SEPIC-Ćuk converter for LED lighting with reduced storage capacitor

Cited by 6 publications

References 14 publications

Non‐isolated high step‐up/step‐down quadratic converter for light‐emitting diode driving

Non‐isolated high step‐up/step‐down quadratic converter for light‐emitting diode driving

Conversor SEPIC quadrático não isolado sem capacitores eletrolíticos para acionamento de iluminação a LED

Non‐isolated high step‐up / step‐down DC–DC quadratic Ćuk converter

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