Results 41 to 50 of about 5,275,359 (268)

Modelling approaches for DC-DC converters with switched capacitors

, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P., Rosas Caro, J.C., Mayo Maldonado, J.C.   +2 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Design and implementation of a full analogue gate driver for current compensation of paralleled SiC‐MOSFETs

IET Power Electronics
Silicon carbide MOSFETs have current ratings that are not sufficiently high to be used in high‐power converters. It is necessary to connect several MOSFETs in parallel in order to increase current capabilities.
Adel Rezaeian, Ahmad Afifi, Hamid Bahrami   +2 more
doaj   +1 more source

Studies of large‐scale DC connected photovoltaic power system based on multi‐modular cascaded DC‐DC converter

IET Generation, Transmission & Distribution, 2023
DC collection and transmission is one of the major development directions of large‐scale photovoltaic (PV) power system. In order to achieve low‐cost, high‐efficiency and long‐distance transmission of PV power, this paper adopted a DC grid‐connected ...
Fei Liu, Yushuo Chen, Jian Shi, Lu Qu, Zhenning Zi, Zhanqing Yu   +5 more
doaj   +1 more source

Behaviour of Modular Multilevel DC/DC ConverterWith DC Voltage Control Integrated in a Multi-terminal DC System Under Fault Conditions [PDF]

The development of multi-terminal DC (MTDC) networks has various challenges as interconnecting grids of different voltages and grounding schemes, DC grid protection and power flow.
COLAS, Frédéric, GUILLAUD, Xavier, SHAFIQUE, Ghazala, GRUSON, Francois   +3 more
core   +1 more source

An analysis of bidirectional superposed dual active bridge DC-DC converter with synchronous rectifier [PDF]

, 2010
This paper describes the principles and characteristics of a novel bidirectional superposed dual active bridge DC-DC converter with synchronous rectifier, which has a mechanism formed from two bridge-type converters that are linked through superposition ...
Takayuki Kimura, Hirofumi Matsuo, Toshiro Hirose, Hirose, Toshiro, Kimura, Takayuki, Matsuo, Hirofumi, Harada, Kosuke, Kosuke Harada   +7 more
core   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

Very high step‐down coupled inductor two‐phase buck converter with single magnetic element and inherent clamp voltage capability

IET Power Electronics
This paper proposed a new two‐phase high step‐down DC–DC converter is proposed. This converter is derived from the two‐phase series‐capacitor converter. The proposed converter replaces the series capacitor with a new structure that integrates Valley‐Fill
Ahmad Ghamsari Esfahani, Ehsan Adib
doaj   +1 more source

Quasi‐fixed frequency controlled phase modulation LCC resonant converter with a wide power range

IET Circuits, Devices and Systems, 2023
The research on LCC resonant converters has become increasingly popular since the application of the zero‐voltage switching can improve the transmission ability and ensure the high efficiency of the power supplies. In this article, a novel quasi‐definite
Ying Feng, Dejun Kong
doaj   +1 more source

Simultaneous Enhancement of Performance and Stability in Dual‐Gate a‐IGZO Thin‐Film Transistors via Single‐Step Laser Annealing for Capacitor‐Less DRAM

Advanced Functional Materials, EarlyView.
A single‐step laser annealing strategy is presented for dual‐gate a‐IGZO TFTs. The steep thermal gradient induces graded oxygen doping in the channel and simultaneous WOx removal at the contacts, enabling concurrent interface and contact engineering.
Sihyeon Kwon, Junil Kim, Geuntae Park, Minseok Kim, Woohyun Hwang, Wanki Kim, Daewon Ha, Byeongmoon Lee, Jae Eun Jang, Hyuk‐Jun Kwon   +9 more
wiley   +1 more source