Results 21 to 30 of about 33,988 (309)

An Improved Modulation Method for Parallel Three-Level Rectifiers With Circulating Current Mitigation

open access: yesIEEE Access, 2023
An improved modulation method is proposed for two parallel three-level interleaved rectifiers to reduce current harmonics and high-frequency zero-sequence circulating current, which uses sinusoidal pulse width modulation.
Yanfeng Li   +3 more
doaj   +1 more source

A Precise Model of DC-Link Current in Adjustable Speed Drives for the Harmonic Analysis of Electrical Networks

open access: yesIEEE Access, 2022
Adjustable Speed Drives (ASDs) deteriorate the power quality in distribution networks by increasing the harmonic distortions. These harmonics can also cause serious electromagnetic interference-related issues in the network, as they have a high value ...
Arash Moradi, Jalil Yaghoobi, Firuz Zare
doaj   +1 more source

Nonlinearity of Magnetic Core in Evaluation of Current and Phase Errors of Transformation of Higher Harmonics of Distorted Current by Inductive Current Transformers

open access: yesIEEE Access, 2020
The novelty of the paper contributes to the increase of the reliability of the methods used for evaluation of the inductive CTs accuracy of transformation of the distorted current.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

Harmonic currents of finite energy and laminations [PDF]

open access: yesGAFA Geometric And Functional Analysis, 2005
29 ...
Fornæss, John Erik, Sibony, Nessim
openaire   +3 more sources

Harmonics Forecasting of Wind and Solar Hybrid Model Driven by DFIG and PMSG Using ANN and ANFIS

open access: yesIEEE Access, 2023
Grid integration of Renewable Energy Systems (RES) involves various types of power electronics-based converters and inverters. The use of these electronic-based devices results in inducing both current and voltage harmonics to the grid.
Fawaz M. Al Hadi   +2 more
doaj   +1 more source

High-Frequency Behavior of Residual Current Devices [PDF]

open access: yes, 2012
The purpose of this paper is to analyze the behavior of residual current devices at frequencies higher than the rated one. Many experiments are carried out by measuring tripping current and time of devices of different typology, produced by different ...
Freschi, Fabio
core   +1 more source

A Novel Fundamental and Harmonics Detection Method Based on State-Space Model for Power Electronics System

open access: yesIEEE Access, 2020
Harmonic current estimation is the key technology of power electronics systems to generate a harmonics reference current for harmonic control. In this paper, a novel fundamental and harmonic current detection method based on the state-space model (SSM ...
Dongdong Chen, Long Xiao
doaj   +1 more source

Digital Current-Control Schemes [PDF]

open access: yes, 2009
The paper is about comparing the performance of digital signal processor-based current controllers for three-phase active power filters. The wide use of nonlinear loads, such as front-end rectifiers connected to the power distribution systems for dc ...
Limongi, Leonardo   +3 more
core   +1 more source

Voltage and Current Excitation for Time-Harmonic Eddy-Current Problems [PDF]

open access: yesSIAM Journal on Applied Mathematics, 2008
We give a systematic presentation of voltage or current intensity excitation for time-harmonic eddy-current problems. The key point of our approach resides in a suitable power law that permits us to understand the role of voltage excitation. We also shed light on the influence of the boundary conditions on the proposed formulations.
Alonso Rodriguez, Ana Maria   +1 more
openaire   +2 more sources

The Influence of Harmonics on Error Stability of Energy Meter Verification Device and Its Suppression Measures [PDF]

open access: yesE3S Web of Conferences, 2019
.In view of the problem of poor error stability of the three-phase energy meter verification device under low current load, the working principle and error calculation method of the device are analyzed.
Song Lei   +9 more
doaj   +1 more source

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