Results 21 to 30 of about 293 (138)

Investigation of Novel Transformerless Converters for DC Microgrid: Design and Analysis [PDF]

Iranian Journal of Electrical and Electronic Engineering, 2022
This paper proposes two new soft-switching transformerless converters with high voltage conversion ratio. These proposed converters achieve soft-switching each with a single auxiliary resonant cell.
Pravat Biswal, VEERA VENKATA SUBRAHMANYA KUMAR BHAJANA, Pavel Drabek   +2 more
doaj  

A Comprehensive Analysis of Losses and Efficiency in a Buck ZCS Quasi-Resonant DC/DC Converter

Journal of Low Power Electronics and Applications
As power electronics continue to advance, the demand for highly efficient and low-loss DC/DC converters has grown significantly. This article comprehensively analyses ZCS quasi-resonant switch cell losses and efficiency in buck L-type zero-current ...
Nikolay Hinov, Tsvetana Grigorova
doaj   +1 more source

A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side

Energies, 2018
A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage ...
Duong Tran, Nam Vu, Woojin Choi
doaj   +1 more source

Symmetry and Duality in ZCS and ZVS Quasi-Resonant Buck, Boost, and Buck–Boost DC–DC Converters

Energies
Quasi-resonant (QR) DC–DC converters with PWM control achieve soft switching by shaping the commutation transient through a local resonant process. This paper proposes a symmetry-based unified perspective on classical QR converters by interpreting zero ...
Nikolay Hinov
doaj   +1 more source

A Two-Stage DC/DC Isolated High-Voltage Converter with Zero-Voltage Switching and Zero-Current Switching Applied in Electronic Power Conditioners

Energies, 2022
This paper presents a two-stage DC/DC converter with high efficiency utilized in an electronic power conditioner (EPC), which is widely applicable in satellite communications, etc.
Wei Zheng, Cong Hu, Bin Zhao, Xiao-Bao Su, Gang Wang, Xiao-Wan Hou, Bruce Gu   +6 more
doaj   +1 more source

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

Xi'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

Retificadores de alto fator de potência com comutação suave e baixas perdas de condução

Eletrônica de Potência, 1996
Este artigo apresenta um estudo sobre retificadores monofásicos de alto fator de potência com comutação suave e baixas perdas de condução. As baixas perdas de condução são obtidas através da utilização de um conversor único, ao invés da configuração ...
Alexandre Ferrari de Souza, Ivo Barbi
doaj   +1 more source

Unraveling Mechanisms and Engineering Strategies for Superior Photocarrier Dynamics Toward Efficient Photocatalysis

EcoEnergy, Volume 4, Issue 3, June 2026.
Despite its potential, photocatalysis is limited by inefficient charge carrier separation and transport. This article reviews the mechanisms, characterization methods, and strategies for improvement, concluding with future challenges in the field. ABSTRACT Photocatalysis offers a promising solution to environmental and renewable energy issues. However,
Leqi Cheng, Xin Wang, Yishen Zhang, Xinrong Zhang, Jung‐Ho Yun, Songcan Wang   +5 more
wiley   +1 more source

The Energy Exascale Earth System Model Version 3: 2. Overview of the Coupled System

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.
Abstract The Energy Exascale Earth System Model version 3 (E3SMv3) represents the latest advancement in Earth system modeling developed by the U.S. Department of Energy (DOE). Building upon previous versions, E3SMv3 introduces significant updates across its coupled components to enhance capability and improve fidelity.
Jean‐Christophe Golaz, Wuyin Lin, Xue Zheng, Shaocheng Xie, Andrew F. Roberts, Luke P. Van Roekel, Peter E. Thornton, Alice M. Barthel, Andrew M. Bradley, Jonathan D. Wolfe, Chengzhu Zhang, Kai Zhang, Shixuan Zhang, Xylar S. Asay‐Davis, Carolyn B. Begeman, Gautam Bisht, Susannah M. Burrows, Chih‐Chieh‐Jack Chen, Yan Feng, Elizabeth C. Hunke, Robert L. Jacob, Ziming Ke, Salil Mahajan, Naser G. Mahfouz, Mathew E. Maltrud, Xiaoying Shi, Qi Tang, Christopher R. Terai, Erin E. Thomas, Hailong Wang, Jinbo Xie, Tian Zhou, Tony Bartoletti, James J. Benedict, Michael A. Brunke, Darin S. Comeau, Jiwen Fan, Ryan M. Forsyth, James G. Foucar, Oksana Guba, Walter M. Hannah, Dalei Hao, Xianglei Huang, Nicole Jeffery, Hyun‐Gyu Kang, Noel D. Keen, Hsiang‐He Lee, Jiwoo Lee, Xiaohong Liu, Azamat Mametjanov, Johannes Muelmenstaedt, Mark R. Petersen, Michael J. Prather, Stephen F. Price, Yun Qian, Andrew G. Salinger, Sean P. Santos, Yunpeng Shan, Balwinder Singh, Katherine M. Smith, Xiaoliang Song, Sarat Sreepathi, Adrian K. Turner, Tom Vo, Hui Wan, Mingxuan Wu, Wandi Yu, Charles S. Zender, Xubin Zeng, Guang J. Zhang, Meng Zhang, Tao Zhang, Yuying Zhang, Renata B. McCoy, Mark A. Taylor, L. Ruby Leung, Peter M. Caldwell, David C. Bader   +77 more
wiley   +1 more source

Correcting Errors in the Adsorbed Intermediates of CO2 Electroreduction

Carbon Energy, Volume 8, Issue 2, February 2026.
Flying over Jacob's ladder of density functional approximations: chemical accuracy in the DFT‐based modeling of CO2 reduction electrocatalysis can be approached with our simple semiempirical method to deconvolute and correct gas‐phase errors and adsorbed‐phase errors.
Ricardo Urrego‐Ortiz, Camberly Schaffer Zhong, Wei Jie Teh, Santiago Builes, Boon Siang Yeo, Federico Calle‐Vallejo   +5 more
wiley   +1 more source