Results 111 to 120 of about 2,351 (210)

Robust controller design for a DC-DC ZCS converter using µ-synthesis and analysis

open access: yes, 2002
Resonant converters have a highly nonlinear and time-varying nature. Any change in operating conditions leads to significant\ud changes in system dynamical model so that desired performance and even stability are lost.
Mitani, Yasunori   +3 more
core  

Implementation scheme of full-bridge boost converter with ZVZCS based on PWM and phase-shift control

open access: yesXi'an Gongcheng Daxue xuebao
The full-bridge boost (FB-Boost) converter combines the characteristics of both stepup and step-down conversion, low conduction losses, electrical isolation, and soft switching, mak ing it suitable for applications requiring a wide voltage range, high ...
ZHANG Tuanshan, SHI Zhehan, CAO Xiaodong
doaj   +1 more source

Research on Hybrid Modulation Strategy for Three-level LLC Converter

open access: yesKongzhi Yu Xinxi Jishu, 2021
It adopts a single light-load fixed-frequency modulation or full-voltage range frequency conversion strategy for three-level LLC converter, which cannot take into account the widely output gain and good soft switching characteristics.This paper proposes ...
LIU Gengbo   +5 more
doaj  

Improvements for ZCS-PWM commutation cell in high-power-factor preregulator application

open access: yes, 2006
A Summary of different topological arrangements concerning a ZCS-PWM cell is presented, based on the analysis of its application in boost rectifying preregulators, controlled by the technique of instantaneous average values of input current, with the ...
Wakabayashi, F. T., Canesin, C. A.
core   +1 more source

Integrated ZCS quasi-resonant single-stage high power factor converter

open access: yes, 1999
A new single phase zero-current-switched (ZCS) single stage quasi-resonant converter (QRC) for power factor correction (PFC) is proposed. The converter provides a good power factor, has tight output regulation, and low line current harmonic distortion ...
Moon, GunWoo   +3 more
core  

Construction of Zn0.5Cd0.5S/Bi4O5Br2 Heterojunction for Enhanced Photocatalytic Degradation of Tetracycline Hydrochloride

open access: yesInorganics
The development of efficient catalysts with visible light response for the removal of pollutants in an aqueous environment has been a hotspot in the field of photocatalysis research.
Lan Luo, Juan Shen, Bo Jin
doaj   +1 more source

Análise, projeto e implementação de um retificador Boost monofásico com alto fator de potência e comutação ZCS das chaves [PDF]

open access: yes, 2013
In order to reduce switching losses and electromagnetic interference (EMI), as well as to attend harmonic standards, such as the IEC61000-3-2, in switch-mode power supplies, this work presents a high power factor Boost rectifier with a turn-on turn-off ...
Borges, Fabrício Alves
core  

Noble-metal-free ternary CN–ZCS–NiS nanocomposites for enhanced solar photocatalytic H2-production activity

open access: yes, 2018
The nanocomposite of ZCS/CN heterojunctions loaded with NiS possesses photocatalytic hydrogen production activity 405 times higher than the pure CN.
Yanchun Yu, Enbo Wang
core   +1 more source

Two-switch ZCS totem-pole bridgeless PFC boost rectifier

open access: yes, 2012
In this paper, a new two-switch zero current switching (ZCS) bridgeless boost rectifier with high power factor (PF) is proposed. The proposed bridgeless converter is based on a totem-pole configuration which allows the current to flow from high side to ...
Khairul Safuan Muhammad   +2 more
core   +1 more source

Bidirectional Hybrid DC Circuit Breaker With Zero Voltage and Current Switching for Radar Power System

open access: yesIEEE Open Journal of Industry Applications
This article proposes a novel zero-voltage switching (ZVS) and zero-current switching (ZCS)-based hybrid dc circuit breaker for a radar power system. Long-range radars demand huge power, in the order of hundreds of kW. Radar's phased array antenna
Nandakumar Saminathan   +5 more
doaj   +1 more source

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