Results 41 to 50 of about 9,547 (132)

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

Zhongguo 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, Guoliang ZHAO, Zhichang YANG, Jingxin CUI   +3 more
doaj   +1 more source

Optimal control of single‐phase microgrid with photovoltaic and energy storage for improving operation performance and seamless state transition

Energy Conversion and Economics, Volume 6, Issue 5, Page 324-340, October 2025.
Abstract Under voltage sags, swells, stochastic load profiles and harmonic voltage distortion, conventional synchronisation mechanisms often fail to track the grid voltage immediately and accurately, leading to degraded control performance and potential power quality violations.
Shiv Shambhu Choudhary, Tripurari Nath Gupta   +1 more
wiley   +1 more source

Regulation of parallel converters based AC microgrid considering non‐ideal grid conditions

Energy Conversion and Economics, Volume 6, Issue 1, Page 1-12, February 2025.
Abstract This study proposes an alternating current microgrid that integrates renewable energy sources to enhance energy sustainability. In this system, wind and solar power are initially converted to DC using DC–DC converters; subsequently, they are integrated into a common AC bus through parallel voltage source converters.
Kripa Tiwari, Bhim Singh
wiley   +1 more source

Development of a Diagnostic Method for Open/Short Circuit Faults in a Vienna Rectifier Based on the THD Method Using SOGI FLL

Applied Sciences
The increasing demand for reliable DC fast-charging stations in electric vehicle (EV) infrastructure necessitates efficient fault detection mechanisms to ensure operational stability and user safety.
Keval Prakash Desai, José Matas, Josep M. Guerrero   +2 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, Seyed Ehsan Abdollahi, Seyedreza Abdollahi, Barmak Baigzadehnoe   +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, Abdelhammid Kherbachi, Aissa Chouder, Hafiz Ahmed, Kamel Kara   +4 more
wiley   +1 more source

Modeling, Tuning, and Performance Comparison of Second-Order-Generalized-Integrator-based FLLs [PDF]

, 2018
The second-order-generalized-integrator-based freq-uency-locked loop (SOGI-FLL) is a well-known tool for filtering and synchronization purposes in the power and energy applications.
Quintero, Juan Carlos Vasquez; id_orcid, Guerrero, Josep M.; id_orcid, Al-Turki, Yusuf, Abusorrah, Abdullah M., Golestan, Saeed; id_orcid, Abdullah M. Abusorrah, Yusuf Al-Turki, Saeed Golestan, Juan. C. Vasquez, Josep M. Guerrero   +9 more
core   +1 more source

On Small Signal Frequency Stability under Virtual Inertia and the Role of PLLs

Energies, 2018
This paper presents a methodology that aims at identifying virtual inertia (VI) gain limitations from virtual synchronous generators (VSGs) while maintaining the frequency stability considering the delay associated with the frequency measurement process.
Sohail Khan, Benoit Bletterie, Adolfo Anta, Wolfgang Gawlik   +3 more
doaj   +1 more source

Optimized operation of AC–DC microgrid cluster with modified PLL and socket protocol

IET Renewable Power Generation, Volume 18, Issue S1, Page 4584-4601, 18 December 2024.
Optimized operation of AC–DC microgrid cluster with modified PLL and SocKet protocol Abstract Microgrids integrating inverter based resources face challenges like stability issues during voltage fluctuations and reliance on diesel generators in islanded mode.
Sonam Gupta, Swastik Gupta, Anup Shukla, Francisco M. Gonzalez‐Longatt   +3 more
wiley   +1 more source

Comparative power quality analysis of conventional and proposed enhanced SRF SOGI-FLL control based DSTATCOM

Journal of Engineering Research, 2022
This paper expresses about comparative power quality analysis in between conventional and proposed control techniques of DSTATCOM under different loading conditions. The goal of DSTATCOM is to reduce power quality problems, occur due to an unbalanced load, non-linear load, power electronics based load and polluted grid. The performances of DSTATCOM are
Amit Kumar, Pradeep Kumar
openaire   +2 more sources