Results 21 to 30 of about 5,431,466 (351)

Comparison of single-phase matrix converter and H-bridge converter for radio frequency induction heating [PDF]

open access: yes, 2007
This paper compares the newly developed single-phase matrix converter and the more conventional H- bridge converter for radio frequency induction heating.
Bingham, Chris   +3 more
core   +1 more source

A new behavioural model for performance evaluation of common mode chokes [PDF]

open access: yes, 2007
A galvanically isolated three-phase AC/AC converter with a high-frequency AC-link has been analyzed from an EMC point of view. This is a special configuration because of a large number of switches, a high frequency transformer, and a fourwire output. The
Bergsma, H.   +5 more
core   +4 more sources

Development trend of mine frequency converter

open access: yesGong-kuang zidonghua, 2017
Main problems of mine-used frequency converter were analyzed that input of research and development is insufficient, value exploration is inadequate, pollution to power net is heavy, and use and maintenance is relatively difficult.
ZHU Yongping, XU Xiaojian
doaj   +1 more source

Resonant Frequency Tracking Scheme for LLC Converter Based on Large and Small Signal Combined Model

open access: yesIEEE Access, 2023
To achieve optimal system performance, it’s recommended to operate an LLC resonant converter at its resonant frequency. However, in mass production, the resonant parameters of different products can deviate significantly.
Runhui He   +6 more
doaj   +1 more source

Design zero-voltage switching DC-DC buck converter [PDF]

open access: yes, 2014
This report proposes an integrated, high switching frequency, zero-voltage-switching dc-dc buck converter for battery charger application. The design and analysis of dc dc buck converter with integrated inductor is presented.
Chan, S. W.   +4 more
core   +1 more source

Two-stage optimization method for efficient power converter design including light load operation [PDF]

open access: yes, 2012
Power converter efficiency is always a hot topic for switch mode power supplies. Nowadays, high efficiency is required over a wide load range, e.g., 20%, 50% and 100% load.
Lam, James   +3 more
core   +1 more source

Design of emergency speed regulation system of coal mine moter

open access: yesGong-kuang zidonghua, 2016
In view of problem that it is difficult to recover normal operation in a short time when frequency converter fails, emergency speed regulation system of coal mine moter was designed.
RUAN Wentao
doaj   +1 more source

Single phase matrix converter for radio frequency induction heating [PDF]

open access: yes, 2006
Conventional converters for radio frequency induction heating usually follow an AC-DC-AC structure, which can exhibit non-unity power factor and introduce large harmonic currents into the utility supply.
Bingham, Chris   +3 more
core   +1 more source

The change in the efficiency factor of the pumping unit with a frequency converter

open access: yesE3S Web of Conferences, 2019
This paper gives the results of the investigation of the operation of a pumping unit equipped with a frequency converter. As a rule, it is widely assumed that when changing the speed up to 50 %, the pump efficiency almost does not change, and the ...
E. Kan, N. Ikramov, M. Mukhammadiev
semanticscholar   +1 more source

Nonreciprocal single-photon frequency converter via multiple semi-infinite coupled-resonator waveguides [PDF]

open access: yes, 2017
We propose to construct a nonreciprocal single-photon frequency converter via multiple semi-infinite coupled-resonator waveguides (CRWs). We first demonstrate that the frequency of a single photon can be converted nonreciprocally through two CRWs, which ...
Xun-Wei Xu   +3 more
semanticscholar   +1 more source

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