An Efficient DC-Grid Based Half-Bridge LED Driver

Sekhar, V Chandra; Vishwanathan, N.

doi:10.1109/npsc49263.2020.9331887

Cited by 4 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 The dc-grid power distribution is attaining more attention due to the rapid growth of electronic equipment in offices, industry, homes, and so forth. [5][6][7] It simplifies the power converter structure to supply electronic equipment such as toys, cell chargers, personal computers (PCs), and LED lighting. Further, dc-grid power distribution plays a crucial role in the internet of things (IoT) industry.…”

Section: Introductionmentioning

confidence: 99%

“…A 48 V supply is used for low-power applications like cell phone charging, PCs, side bed lights, and battery chargers, whereas a 380 V supply, which ranges from 360 to 400 V, is used for high-power applications like washing machines, heating, air conditioners, and main lighting. 5 Several researchers have proposed the ac-grid-fed LED drivers with PFC. [12][13][14][15][16][17][18] They require high-step-down conversion to provide low dc voltage from ac-grid supply and bulky ECs to balance the dc output power and instantaneous input power.…”

Section: Introductionmentioning

confidence: 99%

“…This leads to an additional point of failure, possibly reducing the lifetime, poor power factor (PF), and electromagnetic interference (EMI) can pollute the mains while operating with ac‐grid 4 . The dc‐grid power distribution is attaining more attention due to the rapid growth of electronic equipment in offices, industry, homes, and so forth 5–7 . It simplifies the power converter structure to supply electronic equipment such as toys, cell chargers, personal computers (PCs), and LED lighting.…”

Section: Introductionmentioning

confidence: 99%

“…From the literature, the future dc‐grid for offices, buildings, and home applications will be utilized in two different voltage levels. A 48 V supply is used for low‐power applications like cell phone charging, PCs, side bed lights, and battery chargers, whereas a 380 V supply, which ranges from 360 to 400 V, is used for high‐power applications like washing machines, heating, air conditioners, and main lighting 5 . Several researchers have proposed the ac‐grid‐fed LED drivers with PFC 12–18 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Soft‐switched full‐bridge converter for LED lighting applications with reduced switch current

Patakamoori

Udumula

Nizami

et al. 2022

Circuit Theory & Apps

View full text Add to dashboard Cite

Lighting systems using light-emitting diode (LED) have drawn significant attention across the world. This is due to their promising features such as high energy efficiency, reduced greenhouse gas emission, and eco-friendly nature. However, these systems require constant current regulators to provide constant illumination. This article proposes a soft-switched full-bridge LED driver circuit for dc-grid applications with dimming control operation. The circuit consists of a softswitched full-bridge converter to power different LED lamps with reduced device count from dc-grid voltage. The semiconductor switches of the full-bridge converter conduct a small current during on time due to interleaved inductor and equal current sharing of lamp-2 and lamp-3. This feature reduces the conduction losses. In addition, the proposed converter yields less component count per lamp, dimming operation through on-off control and zero voltage switching, which results in low switching losses. The detailed steady-state analysis of the proposed converter for dc-grid applications with dimming control operation is presented in this work. The performance of the proposed converter is compared with other similar topologies available in the recent literature. Numerical simulations and real-time experimental validations are conducted to evaluate the steady-state performance of the proposed converter topology for LED applications, driving multiple lamp loads from dc-grid. It has been established that the efficiency of the proposed full-bridge converter is 97.52% at the rated power. K E Y W O R D S light-emitting diodes and dimming control, resonant converters, zero voltage switching

show abstract

Section: Introductionmentioning

confidence: 99%