Results 51 to 60 of about 237,029 (312)
AC-DC Cuk Converter: A State-of-the-Art topological review
Energy Conversion and Management: XAC-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 +6 more
doaj +1 more source
IEEE Access, 2021 Three-port intelligent conversion systems, interfacing photovoltaic (PV) arrays and electric vehicles (EVs), with an electrical grid, are a promising flexible infrastructure for future smart grids.
Zhigang Zhang, Bin Liu, Shaojian Song
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 +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 +3 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Power converters and controllers for UPS applications with backup PEM fuel cell [PDF]
, 2008 This paper studies the practical cost-effective DC/DC converter, DC/AC inverter and AC/DC rectifier for an uninterruptible power supply (UPS) system with backup proton exchange membrane fuel cell (PEMFC).
Guo, Y, Wang, H, Zhan, Y, Zhu, J
core +1 more source
Unified Iterative Algorithm for Power Flow of AC/DC System with Multi-Type DC Links
CSEE Journal of Power and Energy SystemsAs 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 +5 more
doaj +1 more source
Controllable AC/DC Integration for Power Quality Improvement in Microgrids
Advances in Electrical and Computer Engineering, 2019 Renewable energy sources can be connected to utility grids by using AC and DC integration methods. The AC integration is a practical and cost-effective method thanks to its simple structure; however, its power quality protection is weak.
KARABIBER, A.
doaj +1 more source
A Self-Powered VDJT AC–DC Conversion Circuit for Piezoelectric Energy Harvesting Systems
Designs, 2023 A comprehensive model for micro-powered piezoelectric generator (PG), analysis of operation, and control of voltage doubler joule thief (VDJT) circuit to find the piezoelectric devices (PD’s) optimum functioning points are discussed in the present article.
Muhammad Kamran +4 more
openaire +2 more sources
Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures
Advanced Functional Materials, EarlyView.3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina +11 more
wiley +1 more source