Single-stage SEPIC-Buck converter for LED lighting with reduced storage capacitor

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

doi:10.1109/iecon.2012.6389505

Cited by 20 publications

(6 citation statements)

References 12 publications

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“…In this case, VL can be eliminated from the relation of VL and Vi (obtained from Vi=VL+IiRi and ∑ ΔI i i =0 ). However, the composite load model is usually not a constant current because the constant impedance and/or constant current loads such as lightening and data center are common in DC systems [38], [39]. Thus, the details of that case are not described herein.…”

Section: Small-signal Stability Analysismentioning

confidence: 99%

Novel Droop Control of Battery Energy Storage Systems Based on Battery Degradation Cost in Islanded DC Microgrids

Lee

Kim

et al. 2020

IEEE Access

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This paper presents a new droop control method to reduce battery degradation costs in islanded direct current (DC) microgrids for multiple battery energy storage systems (BESSs). BESSs may have varying installation costs and battery cycle life characteristics depending on battery type, energy capacity, and maximum output power. These differences cause different battery degradation costs among BESSs despite exchanging the same amount of energy. To autonomously reduce the total battery degradation cost, an incremental cost (IC) of a BESS is used as a criterion for determining the state-of-charge level of BESSs and is calculated based on the battery cycle life curve containing the battery degradation information. By adopting an IC-voltage droop control, the BESSs can maintain an operating point of equal IC, an optimal point for cost minimization. Subsequently, small-signal stability analysis is performed using the state-space model of the proposed method. The case study validates that the proposed method can reduce the total battery degradation cost with a small-signal stable operation in islanded DC microgrids.

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Section: Small-signal Stability Analysismentioning

confidence: 99%

Novel Droop Control of Battery Energy Storage Systems Based on Battery Degradation Cost in Islanded DC Microgrids

Lee

Kim

et al. 2020

IEEE Access

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“…Untuk mencapai efisiensi yang tinggi dalam transfer energi pada catu daya LED, diterapkan topologi switched mode power supply (SMPS) seperti buck, boost, flyback, cuk dan buck-boost [1][2][3][4][5][6][7][8]. SMPS banyak diterapkan secara luas karena keuntungan yang ditawarkan dalam hal ukuran, berat, biaya dan kinerja.…”

Section: Pendahuluanunclassified

Modifikasi Frekuensi Switching pada LED Driver Menggunakan Oscillator Lorenz Analog untuk Mereduksi Conducted EMI

Hariyawan,

Harpawi

2020

elementer

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Lampu light emitting diode (LED) menjadi semakin populer digunakan dalam berbagai macam aplikasi, karena penggunaan daya yang rendah, efisiensi yang tinggi dan perawatan yang rendah. Untuk mencapai efisiensi yang tinggi dalam transfer energi pada catu daya LED, diterapkan switched mode power supply (SMPS). SMPS diimplementasikan dengan pulse width modulation (PWM) yang beroperasi pada frekuensi konstan. Frekuensi switching konstan menghasilkan emisi yang signifikan di sejumlah frekuensi, emisi ini dinamakan electromagnetic interference (EMI). EMI yang dihasilkan termasuk di dalamnya frekuensi operasi fundamental catu daya dan harmoniknya melalui mekanisme conducted dan radiated. Sebagai akibatnya, SMPS berpotensi tidak bisa memenuhi standar electromagnetic compatibility (EMC). Modifikasi switching pada SMPS menggunakan teknik spread spectrum merupakan solusi yang murah dan berdaya guna dalam mitigasi EMI. Pada penelitian ini dilakukan modifikasi switching pada LED driver dengan sinyal chaotic Lorenz. Sinyal chaotic Lorenz diterapkan pada LED evaluation board kemudian dilihat kinerja EMI-nya dibandingkan saat LED driver bekerja dengan frekuensi konstan. Ketika diterapkan sinyal chaotic Lorenz terjadi penurunan level emisi EMI terbesar sebesar 16,5 dBÂµV.

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“…Active: integrated single stage [64], [85], [88], [89], [91]- [105], [119], [ No galvanic isolation: [95], [97], [100], [119], [123]- [125], [127], [131]- [133] 73 [129], 88, 95 [102] 93-99 < 20…”

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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Single-stage SEPIC-Buck converter for LED lighting with reduced storage capacitor

Cited by 20 publications

References 12 publications

Novel Droop Control of Battery Energy Storage Systems Based on Battery Degradation Cost in Islanded DC Microgrids

Novel Droop Control of Battery Energy Storage Systems Based on Battery Degradation Cost in Islanded DC Microgrids

Modifikasi Frekuensi Switching pada LED Driver Menggunakan Oscillator Lorenz Analog untuk Mereduksi Conducted EMI

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

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