Results 21 to 30 of about 1,574,048 (297)

Tunable active chirped-corrugation waveguide filters [PDF]

open access: yes, 1989
A novel tunable semiconductor waveguide reflection filter is proposed and analyzed. The filter is based on spatially selective gain pumping of a chirped-corrugation waveguide.
Mittelstein, Michael   +2 more
core   +1 more source

Integrated series active filter for aerospace flight control surface actuation [PDF]

open access: yes, 2007
The paper investigates integrated series active filters to satisfy aircraft power quality benchmarks and underlying design compromises. Advantages include reduced component count and retrofitting capability.
Bingham, Chris, Ganthony, D
core   +1 more source

Design and control of shunt active power filter for power quality improvement of utility powered brushless DC motor drives

open access: yesAutomatika, 2020
The presence of nonlinear loads like brushless DC (BLDC) motor drives in the distribution system leads to poor power quality (PQ) indices like low power factor, high total harmonic distortion and creates electromagnetic interference.
S. Kumaresan, H. Habeebullah Sait
doaj   +1 more source

Voltage space vector‘s computation for current control in three phase converters

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2012
This work presents two current loop techniques, for three phase voltage source converters (VSC) used as controlled rectifiers (CR) operating at unity power factor.
Alberto Berzoy   +2 more
doaj   +1 more source

Detection Algorithm For Active Filters Based On Adaptive Inverse Control

open access: yesJournal of Applied Science and Engineering, 2023
In order to accurately compensate the harmonics and reactive power of the active power filter, a paralleltype active filter detection algorithm based on adaptive inverse control is proposed to control and follow the DC capacitor voltage, obtain the ...
Longhai Fu
doaj   +1 more source

Dual-Band Tunable Recursive Active Filter

open access: yes, 2011
This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines.
Aznar Ballesta, Francisco   +3 more
core   +1 more source

On the Use of the p-q Theory for Harmonic Current Cancellation with Shunt Active Filters [PDF]

open access: yes, 2019
Discussion and mathematical proof on necessary and sufficient conditions for the application of the {p-q} theory for compensating the harmonic currents consumed by non-linear load using a shunt active filter are presented.
De Angelo, Cristian Hernan   +3 more
core   +3 more sources

Voltage-Mode Multifunction Biquad Filter and Its Application as Fully-Uncoupled Quadrature Oscillator Based on Current-Feedback Operational Amplifiers

open access: yesSensors, 2020
This research introduces a new multifunction biquad filter based on voltage mode (VM) current-feedback operational amplifier (CFOA) and a fully uncoupled quadrature oscillator (QO) based on the proposed VM multifunction biquad filter.
San-Fu Wang   +3 more
doaj   +1 more source

Current Harmonics Compensation in Microgrids Exploiting the Power Electronics Interfaces of Renewable Energy Sources

open access: yesEnergies, 2015
This work presents a method of current harmonic reduction in a distorted distribution system. In order to evaluate the proposed method a grid with high-order current harmonics is assumed.
Ioannis Bouloumpasis   +3 more
doaj   +1 more source

Sequential Discrete Kalman Filter for Real-Time State Estimation in Power Distribution Systems: Theory and Implementation

open access: yes, 2017
This paper demonstrates the feasibility of implementing Real-Time State Estimators (RTSEs) for Active Distribution Networks (ADNs) in Field-Programmable Gate Arrays (FPGAs) by presenting an operational prototype.
Kettner, Andreas Martin, Paolone, Mario
core   +1 more source

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