Results 121 to 130 of about 183,779 (306)

Sampled-Data and Harmonic Balance Analyses of Average Current-Mode Controlled Buck Converter

, 2012
Dynamics and stability of average current-mode control of buck converters are analyzed by sampled-data and harmonic balance analyses. An exact sampled-data model is derived. A new continuous-time model "lifted" from the sampled-data model is also derived,
Chen, Cheng, Dixon, Erickson, Fang, Fang, Fang, Fang, Fang, Fang, Fang, Garcera, Giaouris, Kondrath, Kondrath, Ridley, Tang, Yan   +17 more
core   +2 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Design of the IGBT Snubber Circuit for Megawatt Level Wind Power Module

Kongzhi Yu Xinxi Jishu, 2016
It introduced the theoretical analysis and calculation of snubber circuit for megawatt level wind power module, and demonstrated the suppressing effect of snubber capacitor on over-voltage. Simulation results approved that ripple currents and temperature
ZHAI Long, CHEN Yanping, JIANG Yunfu, HUANG Nan, GAO Haiyou, LI Baoguo   +5 more
doaj  

Input Current Ripple Reduction of Modified Interleaved Quadratic Boost Converter for Photovoltaic Applications

ITEGAM-JETIA
In photovoltaic (PV) systems, achieving high voltage gain and keeping low input current ripple is essential for reliable operation and ensuring that the PV source consistently provides its maximum power.
Abdulkarim Laith Abdulkarim, Ali Hussein Al-omari   +1 more
doaj   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Thermal Modeling of Lithium-Ion Battery Under High-Frequency Current Excitation and Comparative Study of Self-Heating Scheme

Batteries
High-frequency ripple current excitation reduces the lithium precipitation risk of batteries during self-heating at low temperatures. To study the heat generation behavior of batteries under high-frequency ripple current excitation, this paper ...
Hao Li, Jianan Chen, Yingtao Ma, Weizhi Liu, Lei Tang, Bing Liu   +5 more
doaj   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Analysis and Research of DC-link Ripple Current

机车电传动, 2016
Temperature rise of the capacitor played the key role for the DC-link capacitor life and using stability, while thetemperature rise depended on the ripple current.
WANG Shiping, CHEN Yanping, XIONG Hui, XIE Wen, DOU Zechun   +4 more
doaj  

Research on the interleaved boost converter based on magnetic coupling ripple transfer technology

Diance yu yibiao
Aiming at application scenarios that require low current ripple, a multi-phase interleaved parallel zero-ripple coupled inductor integration method based on the ripple transfer principle to achieve zero ripple of input current is proposed. In addition, a
SHEN Hongwan, PAN Shangzhi, JIANG Jianbo, LIN Zisen, GONG Jinwu, ZHA Xiaoming   +5 more
doaj   +1 more source