Results 11 to 20 of about 3,706,735 (305)

Interfering DC Component, Suppression and Influence to Digital Signal Processing

open access: yesRadioengineering, 2008
The article concentrates on effects of a digitized audio signal DC component on a typical A/D converter and its influence on further signal processing. This article analyses reasons of the interfering DC component emergence in the A/D converter.
P. Stranak
doaj   +1 more source

Analysis of Topology and DC Component for a New Type Photovoltaic Grid-connect Inverter

open access: yesKongzhi Yu Xinxi Jishu, 2012
It describes the mechanism of DC component production of photovoltaic (PV) grid-connected inverter system, analyzes the theory of DC component inhibition for single-phase full-bridge topology, H5 topology and a new isolated topology in detail. Simulation
YIN Liang, SONG Pinggang, HU Liu, XU Kai
doaj   +2 more sources

A Protection Algorithm of Filtering Decaying DC Component

open access: yesGong-kuang zidonghua, 2011
When input signal contains decaying DC component, full-wave Fourier algorithm based on periodic function will lead to larger error. To solve the problem, the paper proposed an improved algorithm based on full-wave Fourier algorithm.
QI Yan, HE Ren-wang, WU Xu
doaj   +1 more source

The influence of frequency of AC component on space charge behaviours in polyethylene under combined AC and DC electric fields [PDF]

open access: yes, 2014
Combined ac and dc voltages may occur in high voltage power transmission system, which bring challenges to the dielectric materials. Generally speaking, space charge is well recognised under high voltage dc conditions but has received little attention ...
C. Zhou   +3 more
core   +2 more sources

Modular Multilevel DC Converter : Impact of the Control on the Design and Efficiency [PDF]

open access: yes, 2023
The Modular Multilevel DC Converter is an attractive non-isolated topology to inter- connect High Voltage DC Links. This paper presents the interaction among control, component design and efficiency of this converter.
COLAS, Frédéric   +6 more
core   +1 more source

A new leakage protection method for mine power network

open access: yesGong-kuang zidonghua, 2016
A new leakage protection method was proposed which was based on least-square matrix algorithm. In the method, zero sequence current signal of each brance is extracted on the basis of additional DC source system, and DC component of the zero sequence ...
ZHAO Jianwen   +6 more
doaj   +1 more source

Optimizing the roles of unit and non-unit protection methods within DC microgrids [PDF]

open access: yes, 2012
The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements.
Burt, Graeme   +4 more
core   +4 more sources

The issues of compensated high voltage power cable lines’ switchings by the example of CL 330 kv yuzhnaya - pulkovskaya DC components of SF6-insulated circuit breakers

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
Nowadays SF6-insulated circuit breakers are the most widely used breakers for extra high voltage grids. Operational experience has shown that they are incapable of making fast switching of power transmission lines equipped with shunt reactors due to zero-
S. E. Kasyanov   +2 more
doaj   +1 more source

Measurement of the DC current based on magnetic fluids with an orthogonal magnetic field

open access: yesMeasurement + Control, 2020
Measurement of DC current is critically important in a wide range of applications, such as in photovoltaic power generation and DC power transmission. In this paper, the DC current measuring method based on magnetic fluids with orthogonal magnetic fields
Jian-Ying Zhang   +4 more
doaj   +1 more source

Mitigation of DC Components Using Adaptive BP-PID Control in Transformless Three-Phase Grid-Connected Inverters

open access: yesEnergies, 2018
Transformerless grid-connected inverters, due to their advantages of high efficiency, small volume and light weight, have been the subject of more research and interest in recent years.
Long Bo   +4 more
doaj   +1 more source

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