Results 31 to 40 of about 1,973,197 (213)
Symmetry and Duality in ZCS and ZVS Quasi-Resonant Buck, Boost, and Buck–Boost DC–DC Converters
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
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 +3 more
wiley +1 more source
Conversor CC-CC trifásico ZVS PWM de três níveis [PDF]
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
Time Domain Modeling of Zero Voltage Switching behavior considering Parasitic Capacitances for a Dual Active Bridge [PDF]
To increase the switching frequency in DC/DC converters, soft switching is necessary to limit switching losses. In case of the Dual Active Bridge (DAB), Zero Voltage Switching (ZVS) is used to reduce switching losses.
Idaka, Shiori +5 more
core +1 more source
Study of Commutation Regime for Phase Shift Series Resonant Inverters [PDF]
Some typical applications of series resonant inverters refers to the development of power supplies for the inductive heating field. Phase shift method is of a great interest for the command of the above mentioned inverters. Concerning this command method,
TOMȘE Marin T, GORDAN Cornelia E
doaj
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 +5 more
wiley +1 more source
Zero Voltage Switching Hybrid Voltage Divider Converter [PDF]
This project proposes a new hybrid voltage divider DC-DC converter that utilizes switching capacitors and inductors to produce zero voltage switching (ZVS) at the turn on state of its switches.
Jeong, Timothy
core +1 more source
Single-stage differential mode inverters (DMI) have been extensively utilized in three-phase grid-connected systems due to several advantages, such as few semiconductor devices resulting from their simple and modular configuration.
Ahmed Shawky +5 more
doaj +1 more source
Analysis of a Three-Level Bidirectional ZVS Resonant Converter
A bidirectional three-level soft switching circuit topology is proposed and implemented for medium voltage applications such as 750 V dc light rail transit, high power converters, or dc microgrid systems. The studied converter is constructed with a three-
Bor-Ren Lin, Wei-Po Liu
doaj +1 more source
High-performance DC interfaces play a pivotal role in microgrids with distributed energy resources (DERs), which would significantly improve the utilization of DERs and the flexibility of the prosumers.
Yong Shi, Yiren Hu, Baoquan Liu
doaj +1 more source

