Results 71 to 80 of about 397 (141)
MathematicsIn grid-connected inverter systems, the Phase-Locked Loop (PLL) is fundamental for achieving and maintaining precise synchronization between the inverter and the electrical grid.
Atif Ali Alqarni +4 more
doaj +1 more source
A Novel Hybrid Control Approach for Frequency and Voltage Regulation in IPT Systems
IET Power Electronics, Volume 18, Issue 1, January/December 2025.This paper presents a novel hybrid control strategy that integrates a phase‐locked loop utilising the second‐order generalised integrator (SOGI‐PLL) with phase shift control. The proposed method effectively maintains the stability of the output voltage and the resonant state of the system by concurrently adjusting the operating frequency and the phase ...
Mohammadreza Kiyani +3 more
wiley +1 more source
Advanced control scheme and dynamic phasor modelling of grid‐tied droop‐controlled inverters
IET Renewable Power Generation, Volume 19, Issue 1, January/December 2025.Abstract 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). The proposed control scheme includes a power calculation method based on an enhanced second‐order generalized integrator frequency‐locked loop (ESOGI‐FLL). Contrary to the
Ahmed Bendib +4 more
wiley +1 more source
Impedance Analysis of SOGI-FLL-Based Grid Synchronization
, 2017 The latest research has pointed out that the Phase-Locked Loop (PLL) plays an important role in shaping the impedance of grid-connected converters, yet most of the works so far merely focus on the synchronous reference-frame PLL.
Yi, Hao +7 more
core +1 more source
Full SiC Three‐Level T‐Type Quasi‐Z Source Inverter as Grid‐Forming Unit in Islanded Nanogrid
IET Renewable Power Generation, Volume 19, Issue 1, January/December 2025.The paper presents the design, assembling and testing of a full SiC islanded nG comprising a SiC 3L T‐Type qZSI laboratory prototype acting as a grid ‐forming unit and two 2L VSIs switching at a frequency of 50 kHz. ABSTRACT As the electricity landscape evolves towards greater penetration of renewable energy, voltage source inverters (VSIs) have ...
Javier Gutiérrez‐Escalona +5 more
wiley +1 more source
Automatika, 2020 The main challenge in today's power system is to supply continuous, reliable power and satisfy the high demand. The incorporation of renewable energy sources into the utility grid system can be accomplished.
T. Jayakumar, Albert Alexander Stonier
doaj +1 more source
, 2021 Second-order Generalized Integrator (SOGI)-based quadrature-signal-generator (QSG), in conjunction with either a phase-locked-loop (PLL) or a frequency-locked-loop (FLL), is widely used as the synchronization unit of grid-tied converters. This paper will
Molinas, Marta +3 more
core +1 more source
Noise-Adaptive SOGI–HOSM Observer for Sensorless Speed Control of Induction Machines
Journal of Electrical and Computer EngineeringThis study addresses the limitations of traditional sliding-mode observers in sensorless induction motor control under complex, non-Gaussian noise profiles.
Kobena Badu Enyam +4 more
doaj +1 more source
A new LPF-based grid frequency estimation for the SOGI filter with improved harmonic rejection [PDF]
, 2018 This paper proposes a new method for the estimation of the grid voltage frequency using a low-pass filter (LPF) approach. The estimated frequency is used to tune a second order generalized integrator (SOGI) filter commonly used for grid monitoring ...
Al-Turki, Y.A. +4 more
core +1 more source
, 2023 This paper presents a method for the estimation of key parameters of limit cycle oscillations (amplitude and frequency) during a relay experiment used for automatic tuning of proportional-integral (PI) and proportional-integral-derivative (PID) feedback ...
Kolar, Davor +3 more
core +2 more sources