Results 41 to 50 of about 11,364,674 (354)

Harmonics Analysis of Input Current of 3-Phase PWM Rectifier [PDF]

open access: yes, 2021
Rectifier is a non-linier load that causes harmonic distortion in the power system. Pulse-width modulation (PWM) method is an effective method in pressing the magnitude of harmonics in a rectifier application,  it provides an almost sinusoidal input ...
Alfin Prima Adjie, Muhammad Imran Hamid
core   +2 more sources

Study the Effect of Serial Inductance on Reducing the Current Harmonic Distortion of Three-Phase Bridge Rectifier

open access: yesTikrit Journal of Engineering Sciences, 2018
The aim of this paper is to analyze the influence of adding serial inductance in AC side of the ‎‎3ph -6 pulse bridge rectifier on the reduction of harmonic distortion rate. A simulated model ‎with serial inductance was analyzed.
Ghanim Thiab Hasan   +2 more
doaj   +1 more source

Model-Based Spatial Harmonics Vector Compensation Method for Three-Phase Mutually Coupled Switched Reluctance Machine With Sinusoidal Current Excitation

open access: yesIEEE Open Journal of Power Electronics, 2020
This paper presents a spatial harmonics compensation method for mutually coupled switched reluctance machines (MCSRMs) with sinusoidal current excitation. The regulation by linear controllers to achieve sinusoidal currents in MCSRMs is challenging due to
Peter Azer   +2 more
doaj   +1 more source

Testing Sensitivity of A-Type Residual Current Devices to Earth Fault Currents with Harmonics

open access: yesSensors, 2020
In many applications, modern current-using equipment utilizes power electronic converters to control the consumed power and to adjust the motor speed. Such equipment is used both in industrial and domestic installations.
Stanislaw Czapp
doaj   +1 more source

Operation of the Electronic Current Transformer for Transformation of Distorted Current Higher Harmonics [PDF]

open access: yes, 2022
This paper evaluates an electronic current transformer’s wideband accuracy in the transformation of distorted current harmonics. The tests were performed in the range of frequencies from 50 Hz to 5 kHz.
Artur Szczęsny   +2 more
core   +1 more source

Light‐Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley   +1 more source

Mathematical Modeling of Current Harmonics Caused by Personal Computers [PDF]

open access: yes, 2008
Personal computers draw non-sinusoidal current with odd harmonics more significantly. Power Quality of distribution networks is severely affected due to the flow of these generated harmonics during the operation of electronic loads.
Muhammad Akmal, Rana Abdul Jabbar Khan
core   +1 more source

Current Harmonic Suppression for Dual Three-Phase Permanent Magnet Synchronous Motor Drives

open access: yesIEEE Access, 2019
Due to motor asymmetry and system nonlinear factors, the dual three-phase permanent magnet synchronous motor (PMSM) drives produce a large number of current harmonics during operation. Based on the Vector Space Decoupling model, the six-phase currents of
Zhihuang Ruan, Wenxiang Song, Yan Yan
doaj   +1 more source

The influence of the network asymmetry on the settings and sensitivity of an earth fault protection using higher harmonics [PDF]

open access: yesE3S Web of Conferences, 2019
Detection of high resistance earth faults in medium voltage networks is an important problem due to ineffectiveness of traditional earth fault protections.
Marciniak Lubomir, Piątek Mateusz
doaj   +1 more source

Current Harmonics Controller for Reduction of Acoustic Noise, Vibrations and Torque Ripple Caused by Cogging Torque in PM Motors under FOC Operation

open access: yesEnergies, 2020
This article presents an effective algorithm to reduce acoustic noise, vibrations and torque ripple caused by cogging torque in three-phase Permanent Magnet (PM) motors under Field Oriented Control (FOC) operation.
M. Sumega, P. Rafajdus, M. Stulrajter
semanticscholar   +1 more source

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