Results 41 to 50 of about 300,081 (358)

Power Loss Analysis of a Five-Phase Drive System Using a Synchronous Reluctance Motor and an Indirect Matrix Converter with Reduced Switching Losses

open access: yesMachines, 2022
This paper introduces and analyzes the power losses of a five-phase drive system based on an indirect matrix converter (IMC) and a five-phase synchronous reluctance motor (SynRM).
Kotb B. Tawfiq   +2 more
doaj   +1 more source

Quantifying Incomplete Zero-Voltage Switching Losses Using Equivalent Hard-Switching Losses

open access: yes
With fast switching wide band-gap semiconductors conquering high-power application, zerovoltage switching (ZVS) topologies are crucial toincrease converter efficiency by minimizing switchinglosses. However, ZVS criteria cannot always be fulfilledin the entire operating range of the converter.
Zäch, Mike Robin   +3 more
  +5 more sources

Optical interconnection networks based on microring resonators [PDF]

open access: yes, 2012
Optical microring resonators can be integrated on a chip to perform switching operations directly in the optical domain. Thus they become a building block to create switching elements in on-chip optical interconnection networks, which promise to overcome
Andrea Bianco   +17 more
core   +1 more source

Experimental Investigation on SiC MOSFET Turn-Off Power Loss Reduction Using the Current Sink Capacitor Technique

open access: yesEnergies, 2023
This paper investigates the current sink capacitor technique as a method to minimize the turn-off power losses of SiC MOSFETs operated with zero-voltage switching (ZVS).
Michał Harasimczuk   +4 more
doaj   +1 more source

Constant-frequency multi-resonant converter-fed DC motor drives [PDF]

open access: yes, 1996
Low-inductance dc motors with high power density and low rotor inertia are becoming more attractive, particularly for servo applications. In order to maintain their current ripples within acceptable levels, power converters need to operate at high ...
Chan, CC, Chau, KT, Ching, TW
core   +1 more source

Improving the Efficiency of the Shunt Active Power Filter Acting with the Use of the Hysteresis Current Control Technique

open access: yesEnergies, 2023
Calculation of the reference waveform for the compensating current generated by the shunt active power filter (ShAPF) can be carried out using various methods.
Andrzej Szromba
doaj   +1 more source

Reducing switching losses through MOSFET-IGBT combination [PDF]

open access: yes, 2008
This paper introduces a configuration aimed at switching losses reduction trough a power leg constructed by combining a MOSFET and an IGBT. The combined use of these different switches leads to the turn-on losses reduction trough the use of the faster ...
Marinov, Angel   +2 more
core  

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Increasing the Energy Efficiency of Traction Electric Drives of Direct Current

open access: yesNauka ta progres transportu
Purpose. The work is aimed at improving the energy efficiency of direct current traction electric drives of electric transport by introducing transistor pulse width converters (PWC) with an optimal switching frequency to minimize total electrical losses ...
V. M. Kovalov, Yu. V. Kovalova
doaj   +1 more source

An Improved Methodology for Switching Losses Estimation in SiC MOSFETs

open access: yesEletrônica de Potência, 2020
This work presents an improved analytical model concerning the prediction of switching losses in power MOSFETs by considering the influence of parasitic elements in the high-frequency operation of devices.
Wesley J. de Paula   +4 more
doaj   +1 more source

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