Results 71 to 80 of about 532,709 (209)

Self-precharge in single-leg flying capacitor converters [PDF]

open access: yes, 2009
Flying Capacitor (FC) multilevel pulse width modulated (PWM) converters are an attractive choice due to the natural voltage balance property. During start-up of the converter, care has to be taken that the power switches are not exposed to voltage ...
Melkebeek, Jan   +2 more
core   +2 more sources

Ultra High Step‐Up Soft Switching Converter Based on the Interleaved Structure

open access: yesEnergy Science & Engineering
A new interleaved high step‐up DC–DC converter is presented in this paper, providing very high voltage conversion, significantly lowering the voltage stress across semiconductor components, and minimizing conduction losses.
Mahdi Alizadeh   +3 more
doaj   +1 more source

Research on a Three-Phase Soft-Switching Inverter Based on a Simple Auxiliary Snubber Circuit

open access: yesEnergies
This study presents a novel soft-switching inverter distinguished by a simplified topology and an innovative modulation approach. The design aims to optimize the energy conversion processes commonly found in auxiliary snubber circuits.
Dawei Dai, Hua Zheng
doaj   +1 more source

Fast magnetization switching of Stoner particles: A nonlinear dynamics picture

open access: yes, 2005
The magnetization reversal of Stoner particles is investigated from the point of view of nonlinear dynamics within the Landau-Lifshitz-Gilbert formulation. The following results are obtained.
J. Miltat   +6 more
core   +2 more sources

Zero-voltage transition–zero-current transition pulsewidth modulation DC–DC buck converter with zero-voltage switching–zero-current switching auxiliary circuit

open access: yesIET Power Electronics, 2012
In this study, a new zero-voltage transition (ZVT)-zero-current transition (ZCT) quasi-resonant buck converter, which ensures zero crossings at any time required for soft switching (SS) and provides ZVT turn-on and ZCT turn-off together for the main switch of active snubber cell in buck converter is presented.
openaire   +2 more sources

High Power Zero-Voltage and Zero-Current Switching DC-DC Converters

open access: yesAdvances in Electrical and Electronic Engineering, 2005
The paper presents principles and properties of the soft switching PWM DC-DC converters. The attention is focused mainly on high power applications and thus the full-bridge inverters are used in DC-DC converters.
Jaroslav Dudrik
doaj  

Thermally activated switching rate of a nanomagnet in the presence of spin torque

open access: yes, 2013
The current dependence of the spin torque switching rate in a thermally activated region of an in-plane magnetized system was studied. The logarithm of the switching rate depended nonlinearly on current in the high-current region, I_{c} < I < I_{c ...
Imamura, Hiroshi   +2 more
core   +1 more source

Characterization and snubbing of a bidirectional MCT in a resonant ac link converter [PDF]

open access: yes
The MOS-Controlled Thyristor (MCT) is emerging as a powerful switch that combines the better characteristics of existing power devices. A study of switching stresses on an MCT switch under zero voltage resonant switching is presented.
Elbuluk, Malik E.   +2 more
core   +1 more source

Multi-bit MRAM storage cells utilizing serially connected perpendicular magnetic tunnel junctions

open access: yes, 2019
Serial connection of multiple memory cells using perpendicular magnetic tunnel junctions (pMTJ) is proposed as a way to increase magnetic random access memory (MRAM) storage density.
Rzeszut, Piotr   +4 more
core   +1 more source

Dead-Time Free Modulation Scheme for IM Drive System Fed by Voltage Source Inverter

open access: yesEnergies
During the modulation process of the VSI motor drive system, the nonlinear errors caused by the dead-time and conduction voltage drop will increase the phase current harmonic distortion and the torque ripple. To solve this problem, a novel dead-time free
Qiwei Xu   +4 more
doaj   +1 more source

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