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A Novel Synchronous Reference Frame Frequency-Locked Loop [article]

Xiangjun Quan, Qinran Hu, Alex Q. Huang, Xiaobo Dou, Zaijun Wu
2019 arXiv   pre-print
This letter proposes a new design of frequency-locked loop (FLL) which is based on synchronous (dq) reference frame instead of stationary (αe̱ṯa̱) reference frame.  ...  First, a synchronous reference frame FLL (briefly called SRF-FLL0) equivalent to the conventional FLL is proposed.  ...  The most widely used grid synchronization techniques are phase-locked loops (PLLs) [1] and frequency-locked loops (FLLs) [2], [3].  ... 
arXiv:1908.08669v3 fatcat:rjtdm2ljvvferhebp3z3tmf55i

A Fixed-Length Transfer Delay Based Adaptive Frequency-Locked Loop for Single-Phase Systems

Zhiyong Dai, Zhen Zhang, Yongheng Yang, Frede Blaabjerg, Yigeng Huangfu, Juxiang Zhang
2019 IEEE transactions on power electronics  
Index Terms-Frequency locked loop (FLL), fixed-length transfer delay, single-phase systems, grid synchronization, frequency variations.  ...  Thus, the grid voltage parameters can be estimated accurately, even when the frequency drifts away from its nominal value.  ...  Next, a strict derivation is provided to prove that Eq. (14) and (15) are a frequency locked loop and the TD-AFLL estimates the grid frequency with zero steady-state errors.  ... 
doi:10.1109/tpel.2018.2871032 fatcat:fackijlopnbbfjegk2hlg2ioqy

Benchmarking of phase lock loop based synchronization algorithms for grid-tied inverter

Filip Filipovic, Bojan Bankovic, Milutin Petronijevic, Nebojsa Mitrovic, Vojkan Kostic
2019 Serbian Journal of Electrical Engineering  
A rapid and precise grid voltage phase and frequency estimation under a wide spectrum of possible grid disturbances is its main objective.  ...  In renewable energy-based generation sources a phase locked loop is one of the most popular synchronization techniques.  ...  controller parameters calculations using symmetrical optimum method provide proportional gain (16) and integral time constant (17): 1 p m W k V T  , (16) Benchmarking of Phase Lock Loop Based Synchronization  ... 
doi:10.2298/sjee1901001f fatcat:eigwgizsqbalvjl3we7ek2a3di

A Novel Repetitive Control Enhanced Phase-Locked Loop for Synchronization of Three-Phase Grid-Connected Converters

Filip Filipović, Milutin Petronijević, Nebojša Mitrović, Bojan Banković, Vojkan Kostić
2019 Energies  
This paper proposes the enhancement of a synchronous reference frame phase-locked loop in terms of its dynamic response and disturbance rejection capability.  ...  The improvements were undertaken in order to upgrade the converter grid support capability required by modern grid codes during grid faults.  ...  Low Voltage Grid Disturbances and Their Influence on Phase Locked Loop Synchronization In this section, the effects of common grid disturbances on SRF-PLL are examined.  ... 
doi:10.3390/en13010135 fatcat:t376ye5tpfc6fe2ibal5awqsdy

Recent advances in phase-locked loop based synchronization methods for inverter-based renewable energy sources

Haval Sardar Kamil, Dalila Mat Said, Mohd Wazir Mustafa, Mohammad Reza Miveh, Nasarudin Ahmad
2020 Indonesian Journal of Electrical Engineering and Computer Science  
In the renewable-based generation sources, the phase-locked loop (PLL) is a well-known technique for operating grid-tied power converters for the estimation of the synchronization information and grid  ...  This paper aims to provide a comprehensive review of the recently developed PLL algorithms for grid synchronization applications. At first, various estimation techniques are discussed.  ...  ACKNOWLEDGEMENTS The authors would like to acknowledge the support of the Ministry of Education, Malaysia and Universiti Teknologi Malaysia through research grants 07G53 and 03G88.  ... 
doi:10.11591/ijeecs.v18.i1.pp1-8 fatcat:pipn44zntncqtcb3x3lwdpfoom

A SRF-PLL Control Scheme for DVR to Achieve Grid Synchronization and PQ Issues Mitigation in PV Fed Grid Connected System

Saritha Natesan, Jamuna Venkatesan
2016 Circuits and Systems  
In a grid connected power conversion system, a critical component is the Phase-Locked Loop (PLL) that generates the grid voltage's frequency and phase angle for the grid synchronization.  ...  This paper also presents a novel feedback mechanism for SRF-PLL which uses the estimated frequency and phase to achieve grid control.  ...  The parameter θ * is the integral value of the estimated frequency ω * . The estimated frequency ω * is the sum of the PI controller output and the feed forward frequency ωf.  ... 
doi:10.4236/cs.2016.710256 fatcat:rnr2ivz3ojamjnvaq5ehrn2yzu

Synchronization method for grid integrated battery storage systems during asymmetrical grid faults

Bane Popadic, Vladimir Katic, Boris Dumnic, Dragan Milicevic, Zoltan Corba
2017 Serbian Journal of Electrical Engineering  
The proposed synchronization method has eliminated unfavourable components from the estimated grid angular frequency, leading to the more accurate and reliable tracking of the grid voltage vector positive  ...  This paper aims at presenting a robust and reliable synchronization method for battery storage systems during asymmetrical grid faults.  ...  The phase locked loop uses a phase detector (PD) in order to differentiate between the phase angle of the input and the estimated angle.  ... 
doi:10.2298/sjee1701113p fatcat:2rutfaljpzgwbnmwtiv6zb2iv4

Benchmarking of phase locked loop based synchronization techniques for grid-connected inverter systems

Yongheng Yang, Lenos Hadjidemetriou, Frede Blaabjerg, Elias Kyriakides
2015 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)  
Among the prior-art solutions, Phase Locked Loop (PLL) based synchronization methods have gained much popularity in grid-connected applications.  ...  Index Terms-Phase locked loop (PLL), synchronization, T/4 delay PLL, inverse park transform PLL, enhanced PLL (EPLL), second order generalized integrator PLL (SOGI-PLL), multi-harmonic decoupling cell  ...  Phase Locked Loop (PLL) based synchronization techniques.  ... 
doi:10.1109/icpe.2015.7168077 fatcat:qtss6xrh4rgglinky5e3ewmjsy

Design of a High Performance Phase-locked Loop with DC Offset Rejection Capability Under Adverse Grid Condition

Nanmu Hui, Yingying Feng, Xiaowei Han
2020 IEEE Access  
Aiming at the requirements for detecting grid synchronization signals under unbalanced, harmonics and DC offset voltage mixed conditions, a dual second-order complex coefficient filter with DC offset rejection  ...  The proposed approach employs moving average filter (MAF) to block the high-frequency harmonics in the grid voltage, and uses DSOCCF dc to separate the fundamental frequency positive and negative sequence  ...  The phase-locked loop (PLL) technology can effectively detect the grid synchronization signal in real time and has been widely used [4] .  ... 
doi:10.1109/access.2020.2963993 fatcat:pavskk3unzbazj7k3tb5sfg7je

Review of Synchronization Algorithms used in Grid-Connected Renewable Agents

N.F. Guerrero-Rodríguez, Alexis B. Rey-Boué, A. Rigas, V. Kleftakis
2014 The Renewable Energies and Power Quality Journal (RE&PQJ)  
This paper presents a review of several synchronization algorithms used in Grid-Connected Renewable Agents.  ...  Some simulations will be shown firstly, and secondly, a Real Time Digital Simulator (RTDS) platform will be used for testing and debugging the Synchronization Algorithms.  ...  Acknowledgement This work has been supported by a grant from La Fundación Séneca, Agencia de Ciencia y Tecnología de la  ... 
doi:10.24084/repqj12.300 fatcat:wlbykfmnqfa2fizsf6ffus7npu

Adaptive Filtering-Based Pseudo Open-Loop Three-Phase Grid-Synchronization Technique

Hafiz Ahmed, Samet Biricik, Elhoussin Elbouchikhi, Mohamed Benbouzid
2020 Energies  
To make the proposed technique frequency adaptive, an open-loop frequency estimation technique is also used.  ...  This paper studies the grid-synchronization problem of three-phase system. Second-order adaptive filters are a popular tool for grid-synchronization.  ...  Adaptive observer [29] [30] [31] considers a parameterized linear model of the grid voltage signal where unknown frequency is the parameter.  ... 
doi:10.3390/en13112927 fatcat:hpk2aj7hfzfmfpm7xjiekbc444

Modified phase locked loop for grid connected single phase inverter

Eyad Radwan, Khalil Salih, Emad Awada, Mutasim Nour
2019 International Journal of Electrical and Computer Engineering (IJECE)  
Phase Locked Loop (PLL) circuit is usually used for the purpose of synchronization.  ...  However, deviation in the grid frequency from nominal value will cause errors in the PLL estimated outputs, and that's a major drawback.  ...  The method using the first-order filter shows the shortest estimation time and the method using the second-order filter shows less oscillation [20] .  ... 
doi:10.11591/ijece.v9i5.pp3934-3943 fatcat:6yfewi4r2reqlpvyilcynwsbbi

Conventional Synchronous Reference Frame Phase-Locked Loop is an Adaptive Complex Filter

Saeed Golestan, Josep M. Guerrero
2015 IEEE transactions on industrial electronics (1982. Print)  
Despite the wide acceptance and use of the conventional synchronous reference frame phase-locked loop (SRF-PLL) no transfer function describing its actual input-output relationship has been developed so  ...  Using this transfer function, it is shown that the conventional SRF-PLL is a first-order adaptive complex bandpass filter.  ...  INTRODUCTION Owing to its simple structure, robustness, and effectiveness, the synchronous reference frame phase-locked loop (SRF-PLL) is probably the most popular and widely used technique for extraction  ... 
doi:10.1109/tie.2014.2341594 fatcat:zfms3snqwrdopfg6kvfpjzh6aa

Microgrid control system based on an Adaptive Notch Filter power processor

Sadaf Sadeghian Sorkhabi, Alireza Bakhshai
2016 2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)  
Therefore the existence of a robust and reliable controller and synchronizer is a must in microgrids. In this thesis, the focus is on synchronization techniques and control systems.  ...  These studies are mainly focused on microgrid's occurrence prediction methods, control schemes and their undeniable part, grid synchronization techniques.  ...  EPLL Enhanced Phase-Locked Loop QPLL Quadrature Phase-Locked Loop SRF-PLL Synchronous Reference Frame Phase-Locked Loop in order to track the phase angle are Phase-Locked loop and Notch  ... 
doi:10.1109/pedg.2016.7527025 fatcat:hnea7vg74zgn7mwuz23njulyjq

A comparative Study and implementation of Single-Phase PLL techniques for Grid-Connected Inverters Systems

2018 Journal of Electrical Systems  
Typically, a phase locked loop (PLL) is an essential part of power inverters for achieving synchronization with the utility grid.  ...  loop using four different methods, including, PLL with notch filter, PLL with notch filter based on fuzzy logic, PLL with a second-order generalized integrator filter (SOGI-PLL), PLL with a second-order  ...  Acknowledgment The authors would like to thank IRESEN (Moroccan Research Institute for Solar and New Energy) for the financial support of the research project on 6kVA inverters.  ... 
doaj:5341f9d625bf41feb416103a5094882c fatcat:y2c3fgle7vdyzm7275idrhgrji
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