Results 81 to 90 of about 18,552,898 (302)

LLC series resonant converter with auxiliary circuit for hold-up time

, 2009
Although LLC series resonant converter has advantages of wide operation range and high efficiency, hold up time requirement makes it difficult to optimal design at normal operating condition, results in increasing transformer size and low efficiency.
Choi, Seong-Wook, Moon, GunWoo, Park, Ki-Bum, Kim, Bong-Chul   +3 more
core   +1 more source

Application-Oriented Review of the LLC-Based Resonant Converters

IEEE Access
The LLC resonant converter is a widely utilized power electronics converter, due to its numerous industrial and domestic applications. This converter offers some advantages such as soft-switching operation of all switches, high efficiency, high power ...
Jasem Shahsevani, Reza Beiranvand
doaj   +1 more source

Design of 200 W full digital switching power supply

Dianzi Jishu Yingyong, 2019
By using a bridgeless PFC and a half-bridge LLC resonant converter as the main conversion topology of the digital switching power supply, the all-digital control PFC and DC-DC converter based on the STM32 series of microcontrollers, firstly the digital ...
Rao Gang, Wang Wei
doaj   +1 more source

LLC circuit based ripple current suppression method for single phase bidirectional DC-AC DAB converter [PDF]

, 2017
A new ripple current reduction method utilizing a LLC type ripple current steering circuit is proposed in this paper to significantly reduce 100Hz ripple current in an isolated DC-AC dual active bridge (DAB) converter.
Vilathgamuwa, Mahinda, Malan, Wynand L., Ghasemi, Negareh, You, Jiang   +3 more
core   +1 more source

GHRHR Deficiency Enhances Retinal Ganglion Cell Survival and Visual Functions in Experimental Glaucoma by Inhibiting Ferroptosis

Advanced Science, EarlyView.
Glaucoma, a major cause of blindness, involves retinal ganglion cell (RGC) degeneration. This study shows growth hormone‐releasing hormone receptor (GHRHR) deficiency preserves RGC survival and restores vision, unlike activation which only aids survival.
Yan Tong, Ming Ho Yam, Jiaxin Zhang, Lin Du, Linbin Zhou, Yolanda Wong Ying Yip, Bo Man Ho, Hemlata Bisnauthsing, Jiahui Li, Ivan Kong, Shushu Xu, Changzhen Fu, Karl K.H. So, Joaquim S.L. Vong, Ling‐Ping Cen, Ming‐Ming Yang, Khazeema Yousaf, Mai Har Sham, Sun On Chan, Poemen P. Chan, Chi Pui Pang, Clement C. Tham, Jing Na He, Jian Li, Wai Kit Chu   +24 more
wiley   +1 more source

LLC resonant converter with wide input voltage range

, 2019
Tässä työssä perehdytään LLC-resonanssimuuttajan toimintaan ja sen tulojännitealueen laajentamiseen. LLC-muuttajan toimintaan perehdytään ensin piirin jännitevahvistusta mallintavalla perusaaltoapproksimaatiolla.
Ristiluoma, Aapo
core   +1 more source

High Efficiency High Power Density Bidirectional Non-Isolated LLC Converter With Transformer-Coupled Gate Driver for 48 V MHEV

IEEE Open Journal of Power Electronics
In this article, a 12-switch non-isolated LLC (NI-LLC) converter is proposed to address the application requirements of 4:1 bidirectional fixed-ratio voltage conversion in 48 V mild hybrid electric vehicles (MHEVs).
Song Ding, Chunyan Nie, Qi Liu, Qinsong Qian, Weifeng Sun   +4 more
doaj   +1 more source

LLC resonant converter modelling

, 2014
Many of today's power converters use pulse-width modulation(PWM) techniques to regulate the circulating currents and voltages. A significant problem with most dc-dc converters is the increased power loss during switching. These devices typically operate in hard-switching mode which results in switching losses.
openaire   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

A Modified LLC-AHB Converter to Achieve Wide Voltage Gain

In this paper, a modified LLC-asymmetric half bridge flyback converter (AHB) that can realize a wide range of voltage gain is proposed. This type of topology utilizes the idea of topology morphing to realize the mode transition between LLC mode and AHB ...
Cheng, Hongji, Wu, Weimin, Liu, Feng, Blaabjerg, Frede; id_orcid   +3 more
core   +1 more source