Results 31 to 40 of about 9,292 (267)

PMSG-Based Wind Energy Conversion Systems Integration Into DC Microgrids With a Novel Compact Converter

IEEE Access, 2020
DC microgrids (DC-MGs) are recognized as an efficient alternative for common AC-MGs. DC-MGs need fewer power electronic converters since most of distributed generation (DG) units and electronic loads operate with DC voltage.
Javad Khodabakhsh, Ebrahim Mohammadi, Gerry Moschopoulos   +2 more
doaj   +1 more source

Special Issue “Advances in Control of Power Electronic Converters”

Applied Sciences, 2021
The use of power converters has grown in the last years with the advances in photovoltaic and wind based power generation systems, and the progress in modern concepts such as microgrids and electric mobility.
Oswaldo Lopez-Santos, Germain Garcia
doaj   +1 more source

Coordination Control Strategy for AC/DC Hybrid Microgrids in Stand-Alone Mode

Energies, 2016
Interest in DC microgrids is rapidly increasing along with the improvement of DC power technology because of its advantages. To support the integration process of DC microgrids with the existing AC utility grids, the form of hybrid AC/DC microgrids is ...
Dwi Riana Aryani, Hwachang Song
doaj   +1 more source

Analysis of energy processes in pulse converters of AC electric power

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015
The article presents the analysis of energy processes in switched-mode AC-AC converters of buck, boost and buck-boost types. The mathematical model of energy processes is obtained.
A. F. Kadatsky, A. P. Rusu
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

Unified Iterative Algorithm for Power Flow of AC/DC System with Multi-Type DC Links

CSEE Journal of Power and Energy Systems
As an emerging trend in power grid development, the AC/DC hybrid power grid presents the characteristics of multi-type DC links and large-scale AC/DC interconnection.
Zhiqiang Song, Yaohui Huang, Jianzhong Xu, Chengyong Zhao, Xiufang Jia, Huashi Zhao   +5 more
doaj   +1 more source

A Self-Powered FBRJT AC-DC Conversion Circuit for Piezoelectric Energy Harvesting Systems

Energies, 2023
In this study, a complete model for a miniature excitation-powered piezoelectric generator (PG), analysis modes of operation and control of a full-bridge joule thief (FBRJT) circuit to identify the optimal points were investigated. The proposed model revealed the PG’s power dependency on mechanical excitation, acceleration, and frequency and defined ...
Muhammad Kamran, Mahesh Edla, Ahmed Mostafa Thabet, Abdul Haseeb, Deguchi Mikio, Vinh Bui   +5 more
openaire   +2 more sources

A piezoelectric self-powered active interface for AC/DC power conversion improvement of electromagnetic energy harvesting [PDF]

Smart Materials and Structures, 2020
Abstract In the framework of hybrid energy harvesting for scavenging ambient motion, this paper proposes a cooperative piezoelectricelectromagnetic energy harvesting system to harvest rotational energy. In particular, while the actual process of harvesting energy is accomplished by the electromagnetic device, the piezoelectric element is
G Lombardi, M Lallart, M Kiziroglou, E M Yeatman   +3 more
openaire   +4 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

AC-DC Cuk Converter: A State-of-the-Art topological review

Energy Conversion and Management: X
AC-DC converters, which transform alternating current (AC) into controlled direct current (DC), are key instruments for systems requiring stable and efficient power conversion.
Istiak Ahmed, Asif Imties Alvy, Irfan Rahman, Md. Abdullah Al Hossain, Showrov Rahman, Abdullah Al-Hysam, Abdur Razzak   +6 more
doaj   +1 more source