Results 11 to 20 of about 514,782 (282)

Half-Bridge Full-Bridge AC–DC Resonant Converter for Bi-Directional EV Charger

open access: yesIEEE Access, 2023
A new topology and controller based on single-stage AC-DC resonant converter, without Electrolytic capacitors (E-cap), for bi-directional EV battery chargers is proposed in this paper.
Behnam Koushki   +2 more
doaj   +1 more source

An inductor-less universal switched-capacitor converter realizing dc/dc, ac/dc, dc/ac, and ac/ac conversion

open access: yesEnergy Reports, 2020
For multi-applications, a novel universal switched-capacitor (SC) converter is proposed in this paper. The proposed converter consists of a rotation-type SC converter and a full-bridge circuit.
Kei Eguchi   +3 more
doaj   +1 more source

A step-down nesting-type ac–ac converter combined with voltage equalizers and switched-capacitor simple converters

open access: yesEnergy Reports, 2020
In this paper, we present an inductor-less direct ac–ac converter with improved nesting-type topology. Unlike existing direct ac–ac converters, the proposed ac–ac converter combines a voltage equalizer and a switched-capacitor (SC) simple converter ...
Kei Eguchi   +4 more
doaj   +1 more source

Medium-Voltage Cascaded Sequential Topology for Large-Scale PV Plants

open access: yesIEEE Access, 2021
Photovoltaic (PV) conversion systems are in continuous development due to their increasingly competitive prices. The traditional configuration of large-scale PV plants is based on high-power central inverters, which have reduced their cost by increasing ...
David Lumbreras   +5 more
doaj   +1 more source

A new class of hybrid AC/AC direct power converters [PDF]

open access: yes, 2005
Variable voltage and variable frequency conversion of electrical energy from an AC source to an AC load is done in traditional power converters via a DC-link where an energy storage element (electrolytic capacitors) is situated.
Klumpner, Christian   +2 more
core   +4 more sources

A review of power converter topologies with medium/high frequency transformers for grid interconnection systems [PDF]

open access: yes, 2016
In recent years, power electronics has evolved dra¬matically due to their importance in power extracted manage¬ment from renewable sources. In this paper an overview of grid interconnection systems with galvanic isolation is presented.
Costabeber, Alessando   +4 more
core   +1 more source

Single-stage AC–AC power conversion for WECS

open access: yesInternational Journal of Electrical Power & Energy Systems, 2015
Abstract This paper investigates a novel single stage AC–AC power conversion, as an alternative to multistage AC–DC–AC power conversion topology, for interfacing the wind energy conversion system (WECS) to a grid as a distributed load system. A comprehensive dynamic model of proposed AC–AC converter is developed to satisfy all the functions of the ...
Navdeep Singh, Vineeta Agarwal
openaire   +1 more source

A Simple Two-Stage AC-AC Circuit Topology Employed as High-Frequency Controller for Domestic Induction Heating System

open access: yesApplied Sciences, 2021
The induction heating process at a domestic level is getting attention nowadays as this power converting topology ensures clean, reliable, flexible, and fast operation. The low input frequency is converted to required regulated high output frequency with
Naveed Ashraf   +6 more
doaj   +1 more source

An Improved Bipolar Voltage Boost AC Voltage Controller With Reduced Switching Transistors

open access: yesIEEE Access, 2021
Single-stage power conversion with simple circuit arrangement is one of the attractive features of direct bipolar voltage ac-ac converters. This increases their potency in various applications that require voltage and frequency regulation.
Naveed Ashraf   +4 more
doaj   +1 more source

DDPWM-based power conversion system using three to four phase matrix converter for stand-alone power system [PDF]

open access: yes, 2015
This paper presents a novel stand-alone power system using a three to four phase matrix converter (MC) for use with renewable energy sources such as a micro hydro turbine or a tiny wind turbine with a permanent magnet synchronous generator (PMSG).
Hanamoto, Tsuyoshi   +2 more
core   +1 more source

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