Results 31 to 40 of about 57,919 (311)

High-Efficiency Bi-Directional Single-Phase AC/DC Converter Design and Field Application for LVDC Distribution

Energies, 2019
This paper describes the design and field application of a high-efficiency single-phase AC/DC converter that is suitable for distribution lines. First, an appropriate AC/DC converter was designed in consideration of the environment of the application ...
Juyong Kim, Hongjoo Kim, Jintae Cho, Youngpyo Cho   +3 more
doaj   +1 more source

Large signal stability criterion of AC–DC hybrid microgrids with constant power loads considering reference current limitation

IET Generation, Transmission & Distribution, 2022
Islanded AC–DC hybrid microgrids composed of new energy sources, constant power loads and energy storage system are typical non‐linear systems, and guaranteeing large signal stability is a key issue.
Xinbo Liu, Zongyang Li, Xiaotong Song, Jinghua Zhou, Yaxin Qu   +4 more
doaj   +1 more source

Backstepping Control of NPC Multilevel Converter Interfacing AC and DC Microgrids

Energies, 2023
This work introduces modified backstepping methods to design controllers for neutral point clamped (NPC) converters interfacing a DC/AC microgrid.
J. Dionísio Barros, Luis Rocha, J. Fernando Silva   +2 more
doaj   +1 more source

Transformerless Ac-Dc Converter

, 2012
This paper compares the recent transformerless ACDC power converter architectures and provides an assessment of each. A prototype of one of the transformerless AC-DC converter architecture is also presented depicting the feasibility of a small form factor, power supply design.
Saisundar. S., I Made Darmayuda, Zhou Jun, Krishna Mainali, Simon Ng Sheung Yan, Eran Ofek   +5 more
openaire   +2 more sources

Coordination control of hybrid AC/DC microgrid

The Journal of Engineering, 2019
The hybrid AC/DC microgrid is considered to be the more and more popular in power systems as increasing DC loads. In this study, it is presented that a hybrid AC/DC microgrid is modelled with some renewable energy sources (e.g. solar energy, wind energy),
Beiming Liang, Li Kang, Jianzong He, Fenglei Zheng, Yunfeng Xia, Zhaoyun Zhang, Zhi Zhang, Guozhong Liu, Yang Zhao   +8 more
doaj   +1 more source

Comparative Performance Analysis of the DC-AC Converter Control System Based on Linear Robust or Nonlinear PCH Controllers and Reinforcement Learning Agent

Sensors, 2022
Starting from the general topology and the main elements that connect a microgrid represented by a DC power source to the main grid, this article presents the performance of the control system of a DC-AC converter.
Marcel Nicola, Claudiu-Ionel Nicola
doaj   +1 more source

Experimental studies of influence of DC and AC electric fields on bridging in contaminated transformer oil

, 2015
Analysis of real operating condition revealed that HVDC transformers experience combined effect of DC biased AC electric field. The dynamics of pressboard particle in contaminated transformer oil under the influence of DC, AC and DC biased AC electric ...
Mahmud, S., Golosnoy, I.O., Chen, G., Wilson, G., Jarman, P.   +4 more
core   +1 more source

Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source

High Power Factor AC/DC Converter

Iraqi Journal for Electrical and Electronic Engineering, 2001
A single phase boost rectifier circuit is studied with and without feedforward techniques. The circuit is implemented and tested experimentally. It can be operated at high power factor (greater than 0,99), and at line current total harmonic distortion (THD) (less than 0.06), by selecting a suitable control parameters at the desired output power.
A. S. Alsheraidah, R. S. Fyath, M.M. Ibrahim   +2 more
openaire   +1 more source

Investigation of direct matrix converter working as a versatile converter (AC/AC, AC/DC, DC/AC, DC/DC conversion) with predictive control [PDF]

, 2017
© 2017 IEEE. The three-phase direct matrix converter has been researched exclusively as a direct AC/AC converter, being a competitive alternative to the conventional AC/DC/AC converter. Other possibilities of the matrix converter such as AC/DC, DC/AC and
Aghdam, MM, Li, L, He, T, Zhang, J, Dorrell, DG   +4 more
core   +1 more source