Results 11 to 20 of about 500 (164)

Simplified Second-Order Generalized Integrator - Frequency-Locked Loop [PDF]

open access: yesAdvances in Electrical and Electronic Engineering, 2019
Second-Order Generalized Integrator -- Frequency-Locked Loop (SOGI-FLL) is a popular technique available in the grid synchronization literature. This technique uses gain normalization in the frequency locked-loop.
Hafiz Ahmed, Mohamed Benbouzid
doaj   +2 more sources

Modified Dual Second-order Generalized Integrator FLL for Frequency Estimation Under Various Grid Abnormalities

open access: yesTransactions on Environment and Electrical Engineering, 2016
Proper synchronization of Distributed Generator with grid and its performance in grid-connected mode relies on fast and precise estimation of phase and amplitude of the fundamental component of grid voltage. However, the accuracy with which the frequency
Kalpeshkumar Rohitbhai Patil   +1 more
doaj   +3 more sources

Research on TOGI‐EFLL flux observer for IPMSM sensorless control

open access: yesIET Power Electronics
For the purpose of enhancing the performance of interior permanent magnet synchronous motors (IPMSMs) sensorless control, a flux observer based on a third‐order generalized integrator with enhanced frequency‐locked loop (TOGI‐EFLL) is introduced in this ...
Xue Hao, Yutao Luo
doaj   +2 more sources

Variable Sampling Composite Observer Based Frequency Locked Loop and its Application in Grid Connected System

open access: yesAdvances in Electrical and Computer Engineering, 2016
A modified digital signal processing procedure is described for the on-line estimation of DC, fundamental and harmonics of periodic signal. A frequency locked loop (FLL) incorporated within the parallel structure of observers is proposed to accommodate
ARUN, K., SELVAJYOTHI, K.
doaj   +2 more sources

DYNAMIC CHARACTERISTICS OF THE FREQUENCY-LOCKED LOOP AT THE MOMENT OF TRACKING LOSS OF THE FREQUENCY OF POINT TARGET

open access: yesНаучный вестник МГТУ ГА, 2016
Performance features of the frequency-locked loop in the close range zone used as a narrow-band filter, keeping track of the Doppler frequency, are analyzed.
V. A. Kovrigin
doaj   +1 more source

Improvement and Comparison of Single-Phase Frequency Locked Loops Based on Second Order Generalized Integrator

open access: yesZhongguo dianli
It is required for grid-connected converters to obtain synchronous information quickly and accurately when a short-circuit fault occurs in the grid.
Chaobo DAI   +3 more
doaj   +2 more sources

Advanced control scheme and dynamic phasor modelling of grid‐tied droop‐controlled inverters

open access: yesIET Renewable Power Generation
This paper develops an advanced scheme, modelling, and analysis of power flow control intended for grid‐connected droop‐controlled VSIs within a single‐phase microgrid (MG).
Ahmed Bendib   +4 more
doaj   +2 more sources

A Three-Phase Frequency-Fixed DSOGI-PLL With Low Computational Effort

open access: yesIEEE Access, 2023
This paper offers a detailed analysis as well as a tuning and discretization approach of the presented frequency-fixed dual second order generalized integrator based phase-locked loop (FFDSOGI-PLL) for three-phase power systems.
Benjamin Hoepfner, Ralf Vick
doaj   +1 more source

A Fast and Stable Time Locked Loop for Network Time Synchronization with Parallel FLL and PLL

open access: yes, 2022
S.73-76We propose a concept for accurate network time synchronization. In comparison to NTPv4 and PTPd, which use a closed-loop design with a single loop filter, our approach splits the task into two fundamental aspects: First, matching the local clock's
Grosse, P.   +4 more
core   +1 more source

Research on frequency adaptive of fans based on harmonicextraction technology

open access: yesJournal of Hebei University of Science and Technology, 2021
In order to solve the problem of voltage distortion and frequency fluctuation caused by harmonic interference of wind turbines which affects the stable operation of wind turbines connected to the grid,a frequency adaptive phase lock methodwas proposed ...
Xueyou ZHANG, Shan HE, Wenlong LI
doaj   +1 more source

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