Results 31 to 40 of about 5,767 (214)

A self‐driven synchronous rectification wide‐range ZVS single‐switch forward converter controlled using the variable inductance

IET Power Electronics, 2023
A new single switch ZVS forward converter with a wide soft‐switching range is proposed here. Compared to the conventional forward converter, the proposed converter uses fewer components and operates under ZVS soft switching.
Mahdi Ghavidel Jalise, Hesamodin Allahyari, Aran Shoaei, Ehsan Adib, Hamid Bahrami, Mohammad Ali Latif Zadeh, Mohammad Hossein Fahimifar   +6 more
doaj   +1 more source

Driving Drugs Deeper: Force‐Driven Microneedle Systems for Active Therapy and Their Road Towards Clinical Implementation

Small, Volume 22, Issue 55, 1 October 2026.
Force‐driven microneedles are presented as active therapeutic microdevices that overcome the diffusion limits of conventional patches. By integrating gas generation, magnetic actuation, cavitation, or iontophoresis, these systems drive payloads deeper into tissue, enabling faster, more controlled delivery and highlighting key design principles and ...
Majed Amini, Phoebe Li, Hamed Shahsavan, Mahla Poudineh   +3 more
wiley   +1 more source

Conversor CC-CC trifásico ZVS PWM de três níveis [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Esta tese propõe uma topologia de conversor CC-CC trifásico de três níveis, modulado por largura de pulso e com comutação ...
Agostini Junior, Eloi
core  

A 40.68‐MHz Active Rectifier Using PLL and PWM Control of DC‐DC Converter for ON/OFF Delay Compensation

International Journal of Circuit Theory and Applications, Volume 54, Issue 9, Page 4469-4481, September 2026.
A ramp‐based phase‐locked loop (RPLL) active rectifier operating at 40.68 MHz compensates switching delay variations to improve phase alignment. The proposed architecture achieves 90.3% peak power conversion efficiency and 98.0% voltage conversion ratio for high‐frequency wireless power transfer in implantable medical devices.
Woorim Lee, Sungmin Shin, Seongbin Kwon, Geonwoo Baek, Jongyeop Kim, Franklin Bien   +5 more
wiley   +1 more source

Estudo e implementação de controle digital para o conversor ponte completa e comutação suave com modulação por deslocamento de fase (FB-ZVS-PS) [PDF]

, 2003
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia ElétricaO presente trabalho aborda o desenvolvimento e implementação de um sistema de controle digital para o estágio de saída de
Carvalho, Rafael Takasaki
core  

Extended Off-Time Control for CRM Boost Converter Based on Piecewise Equivalent Capacitance Model

IEEE Access, 2020
Valley-switching (VS) and zero-voltage switching (ZVS) improves overall efficiency in critical conduction mode (CRM) boost converters. To achieve VS/ZVS, off-time of the main switch is often extended to match the resonance period by circuit inductor and ...
Dian Lyu, Guoxiong Shi, Run Min, Qiaoling Tong, Qiao Zhang, Linkai Li, Gaoshuai Shen   +6 more
doaj   +1 more source

Bidirectional Wireless Power Transfer for Electric Vehicle Energy Systems Integrating Modelling, Intelligent Control, Communication and Cybersecurity: A Review

Energy Science &Engineering, Volume 14, Issue 9, Page 4026-4057, September 2026.
This graphical abstract illustrates the evolution of wireless electric vehicle charging from unidirectional wireless power transfer to bidirectional wireless power transfer (BWPT) and toward future intelligent, autonomous wireless energy systems.
P. V. Elumalai, Yuvaraja Shanmugam, A. Vivek Anand, Mesith Chaimanee, Choon Kit Chan, S. Prabhakar, R. Narayanamoorthi   +6 more
wiley   +1 more source

Comprehensive Analysis of ZVS Operation Range and Deadband Conditions of a Dual H-Bridge Bidirectional DC-DC Converter with Phase Shift Control

Journal of Electrical and Computer Engineering, 2023
This study offers a thorough examination of the zero voltage switching (ZVS) operation range and deadband conditions for a bidirectional DC-DC converter with phase shift control, featuring dual H-bridge. The analysis considers the soft switching range of
Ahmed Hamed Ahmed Adam, Jiawei Chen, Salah Kamel, Hamed Zeinoddini‐Meymand   +3 more
doaj   +1 more source

Proximate Climate Drivers of Beaver Pond Occupancy and Range Expansion in Arctic Alaska

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
To understand why beavers are colonizing the Arctic, we evaluated which climate drivers underpin beaver pond dynamics. Warm Junes, mild winters, green summers, and wet springs facilitate pond establishment. Rapid improvement in these conditions across recent decades provides mechanistic support that climate change is driving beaver colonization of the ...
Thomas W. Glass, Ken D. Tape, Benjamin M. Jones, V. Sebastian Zavoico   +3 more
wiley   +1 more source

Unidade retificadora de alta performance 1500W-25A, para telecomunicações [PDF]

, 1993
Dissertação (mestrado) Universidade Federal de Santa Catarina, Centro TecnologicoEste trabalho enfatiza o desenvolvimento de uma unidade retificadora em alta freqüência para aplicação em centrais telefônicas com capacidade de 1500W.
Gaidzinski, Paulo Roberto
core