Results 11 to 20 of about 8,152,883 (248)

The simulation of a twelve pulse diode rectifier with saturable reactors [PDF]

open access: yes, 2004
A twelve pulse diode rectifier with saturable reactors to allow a degree of phase control is simulated using mathematical software. First order differential equations are solved numerically to allow calculation of line current.
Moore, P.J., King, I.G
core   +3 more sources

Improved Corrosion Protection Properties in Anodic Films Type Porous on 2024 T3 Aluminium Alloys Obtained by Pulse Reverse Plating.

open access: yesInternational Journal of Electrochemical Science, 2013
This article presents the results of improvement in the electrochemical properties of porous type anodic films grown on aluminium alloy AA2024 T3, obtained with the techniques of direct current, pulsed direct current and reverse pulse current, through an
W. Aperador, A. Delgado, J. Bautista
doaj   +1 more source

Application of pulse current for dissolution of heat-resistant GS32-VI alloy

open access: yesТонкие химические технологии, 2021
Objectives. To identify the regularities of electrochemical processing of the heat-resistant GS32-VI alloy in a sulfuric acid electrolyte with a concentration of 100 g/dm3 under the action of a pulsed current in a pulsed mode.Methods.
O. V. Chernyshova   +2 more
doaj   +1 more source

Laser Micromachining in Fabrication of Reverse-µEDM Tools for Producing Arrayed Protrusions

open access: yesMicromachines, 2022
This paper focuses on the fabrication of high-quality novel products using a µEDM process variant called Reverse-µEDM. The tool plate required for the Reverse-µEDM is fabricated using Nd: YAG-based laser beam micromachining (LBµM) at the optimized ...
Hreetabh Kishore   +2 more
doaj   +1 more source

Analysis and Test of Reverse Recovery Performance of Fast Recovery Diode in IGCT-MMC

open access: yesZhongguo dianli, 2021
The reverse recovery characteristics of the diode plays an important role in IGCT-MMC. This paper firstly introduces the reverse recovery characteristics of the fast recovery diode.
Yantao LOU   +6 more
doaj   +1 more source

Research on Single-Phase PWM Converter with Reverse Conducting IGBT Based on Loss Threshold Desaturation Control

open access: yesEnergies, 2017
In the application of vehicle power supply and distributed power generation, there are strict requirements for the pulse width modulation (PWM) converter regarding power density and reliability.
Xianjin Huang   +3 more
doaj   +1 more source

Characterization and corrosion property of nano-rod-like HA on fluoride coating supported on Mg-Zn-Ca alloy

open access: yesBioactive Materials, 2017
The poor corrosion resistance of biodegradable magnesium alloys is the dominant factor that limits their clinical application. In this study, to deal with this challenge, fluoride coating was prepared on Mg–Zn–Ca alloy as the inner coating and then ...
Yashan Feng   +6 more
doaj   +1 more source

Optimization of Additive and Current Conditions for Void-Free Filled Through-Silicon Via

open access: yesApplied Sciences, 2018
Studies of through-silicon vias (TSVs) have become important owing to the increasing demand for 3D packaging. To obtain high-performance devices, it is important to fill the holes inside TSVs without voids.
Se-Hee Shin   +3 more
doaj   +1 more source

Effect of cold wire position on the welding process in twin-arc integrated cold wire hybrid welding

open access: yes工程科学学报, 2021
With rapid social and economic development, high-efficiency welding technology has become an important development direction in the field of welding.
Ting XIANG   +5 more
doaj   +1 more source

Performance Improvement of Dual-Buck Inverter With Mitigating Reverse Recovery Characteristics and Supporting Reactive Power

open access: yesIEEE Access, 2022
This paper proposes a three-level dual-buck inverter (DBI) that reduces reverse recovery current and compensates reactive power. To reduce the reverse recovery problem of main switching diodes in the DBI, the auxiliary circuit consisting of diodes and ...
Sanghun Han, Younghoon Cho
doaj   +1 more source

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