Results 11 to 20 of about 413,327 (305)

A Performance Optimized CSTBT with Low Switching Loss

open access: yesMicromachines, 2023
A novel Performance Optimized Carrier Stored Trench Gate Bipolar Transistor (CSTBT) with Low Switching Loss has been proposed. By applying a positive DC voltage to the shield gate, the carrier storage effect is enhanced, the hole blocking capability is ...
Hang Xu   +4 more
doaj   +1 more source

Differential Inverters: A General Design Procedure Integrating a Novel Power Losses Modeling Approach for Utilized DC–DC Modules at Different Modulation Schemes

open access: yesIEEE Access, 2023
Differential inverters develop the PWM of internal DC-DC modules by correlating fundamental frequency of load with high switching frequency to maintain inherent characteristic operation and achieve pure higher/lower AC output voltage with smaller size ...
Ahmed Shawky   +2 more
doaj   +1 more source

An Analysis of Non-Isolated DC-DC Converter Topologies with Energy Transfer Media

open access: yesEnergies, 2019
As miniaturized mobile devices with various functionalities are highly desired, the current requirement for loading blocks is gradually increasing. Accordingly, the efficiency of the power converter that supports the current to the loading bocks is a ...
Se-Un Shin
doaj   +1 more source

Formation and X-ray emission from Hot Bubbles in Planetary Nebulae. I. Hot Bubble formation [PDF]

open access: yes, 2014
We carry out high resolution two-dimensional radiation-hydrodynamic numerical simulations to study the formation and evolution of hot bubbles inside planetary nebulae (PNe).
Arthur, S. J., Toalá, J. A.
core   +1 more source

Triac Based Novel Single Phase Step-Down Cycloconverter with Reduced THDs for Variable Speed Applications

open access: yesApplied Sciences, 2021
In variable speed applications, the cycloconverter-based AC to AC power conversion technique has gained more attention among researchers and academics than the traditional rectifier-inverter-based AC to AC power conversion process.
Tariqul Islam   +3 more
doaj   +1 more source

Investigation of efficient multilevel inverter for photovoltaic energy system and electric vehicle applications

open access: yesElectrical engineering & Electromechanics, 2023
Introduction. This research presents a simple single-phase pulse-width modulated 7-level inverter topology for renewable system which allows home-grid applications with electric vehicle charging.
E. Parimalasundar   +3 more
doaj   +1 more source

Capacitor Commutation Method for MVDC Hybrid Circuit Breakers

open access: yesDesigns, 2021
The medium voltage DC (MVDC) type system can connect multiple terminals to a common MVDC bus, so it is possible to connect several renewable DC power sources to the common MVDC bus, but a DC circuit breaker is needed to isolate short circuit accidents ...
Hyosung Kim
doaj   +1 more source

Research Paper: The analysis of Governing Thermodynamics of Plasma Waste Incinerator, Temperature Measurement and Analysis of Burning Chamber and Calculation of Electrical Arc Temperature [PDF]

open access: yesفیزیک کاربردی ایران
Using the experimental results and data, the thermodynamic characteristics and thermal analysis of the electrical arc of torch electrodes and energy deposition in the waste-incinerator primary designed chamber were investigated. The temperature of arc in
Nader Morshedian, Narges Beigmohammadi
doaj   +1 more source

Dielectric materials for high-temperature capacitors

open access: yesIET Nanodielectrics, 2018
Dielectric materials with excellent energy storage capability at elevated temperatures are critical to meet the increasing demand of electrical energy storage and power conditioning at extreme conditions such as hybrid electric vehicles, underground oil ...
Baoyan Fan   +6 more
doaj   +1 more source

Neonatal Deletion of Hand1 and Hand2 within Murine Cardiac Conduction System Reveals a Novel Role for HAND2 in Rhythm Homeostasis

open access: yesJournal of Cardiovascular Development and Disease, 2022
The cardiac conduction system, a network of specialized cells, is required for the functioning of the heart. The basic helix loop helix factors Hand1 and Hand2 are required for cardiac morphogenesis and have been implicated in cardiac conduction system ...
Rajani M. George   +4 more
doaj   +1 more source

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