Performance of grid-voltage synchronization algorithms based on frequency-and phase-locked loop during severe grid fault conditions

Fuad, Khaled Syfullah; Hossain, Eklas

doi:10.1109/ceeict.2016.7873112

Cited by 5 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in DC microgrids, synchronization is achieved by controlling inverter functions, such as (a) a reference sine waveform signal, (b) input voltage, and (c) shape and pattern of pulse width in a Pulse Width Modulator (PWM) [3]. The literature shows that for synchronization, the frequency controller [4], the excitation controller [5], nonlinear controllers [6], and Phase-Locked Loop (PLL) techniques [7,8] are used; however, they have shortcomings one way or the other. From the above references, we conclude that most techniques fail to track the phase and frequency of grid voltage during grid faults and other adverse operating conditions.…”

Section: Initial Synchronization Of DC Microgrid With the Utility's Ac Gridmentioning

confidence: 99%

Phasor Measurement Unit Assisted Inverter—A Novel Approach for DC Microgrids Performance Enhancement

Yaqub

2021

Electricity

View full text Add to dashboard Cite

DC microgrids are set to change the landscape of future energy markets. However, a wide-scale deployment faces three major issues: initial synchronization of microgrid with the utility grid, slip management during its operation, and mitigation of distortions produced by the inverter. This paper proposes a Phasor Measurement Unit (PMU) Assisted Inverter (PAI) that addresses these three issues in a single solution. The proposed PAI continually receives real-time data from a Phasor Measurement Unit installed in the distribution system of a utility company and keeps constructing a real-time reference signal for the inverter. A well-constructed, real-time reference signal plays a vital role in addressing the above issues. The results show that the proposed PAI is 97.95% efficient.

show abstract

Section: Initial Synchronization Of DC Microgrid With the Utility's Ac Gridmentioning

confidence: 99%

Phasor Measurement Unit Assisted Inverter—A Novel Approach for DC Microgrids Performance Enhancement

Yaqub

2021

Electricity

View full text Add to dashboard Cite

show abstract

“…After the initialization step, the algorithm estimates the open circuit voltage of the battery using = − × R, (7) then the number of steps, CRn, by using where T is the time the battery needs to discharge, and then the supplied charge. The literature provides numerous hands-on methods, as well as Python Libraries, and Matlab Block Libraries based open source codes for measuring the varying internal resistance.…”

Section: Inverter Efficiencymentioning

confidence: 99%

DC Microgrid Utilizing Artificial Intelligence and Phasor Measurement Unit Assisted Inverter

Yaqub

Ali

2021

Energies

View full text Add to dashboard Cite

Community microgrids are set to change the landscape of future energy markets. The technology is being deployed in many cities around the globe. However, a wide-scale deployment faces three major issues: initial synchronization of microgrids with the utility grids, slip management during its operation, and mitigation of distortions produced by the inverter. This paper proposes a Phasor Measurement Unit (PMU) Assisted Inverter (PAI) that addresses these three issues in a single solution. The proposed PAI continually receives real-time data from a Phasor Measurement Unit installed in the distribution system of a utility company and keeps constructing a real-time reference signal for the inverter. To validate the concept, a unique intelligent DC microgrid architecture that employs the proposed Phasor Measurement Unit (PMU) Assisted Inverter (PAI) is also presented, alongside the cloud-based Artificial Intelligence (AI), which harnesses energy from community shared resources, such as batteries and the community’s rooftop solar resources. The results show that the proposed system produces quality output and is 98.5% efficient.

show abstract

“…All of the methods mentioned above use conventional PLL blocks in the control algorithms. Conventional PLL performs well during balanced condition but their performance is not acceptable during unbalanced conditions due to the "Double frequency oscillation" and can be termed as 2ω oscillation [66]- [67]. The 2ω oscillation arises due to the coupling of the positive and negative voltage sequences during unbalanced conditions.…”

Section: ) Frequency Controlmentioning

confidence: 99%

Soft Open Point in Distribution Networks

et al. 2020

Self Cite

View full text Add to dashboard Cite

The main objective of this paper is to present a comprehensive review of soft open point (SOP), an emerging power electronics technology to maximize future distribution networks' (DNs) resiliency and flexibility as well as increase hosting capacity for distributed energy resources like photovoltaics and electric vehicles. The SOP is currently an active area of research and ongoing development of new control techniques for SOP and optimization algorithm for the optimal use of SOP in DNs produces new techniques until DN operators use it comprehensively in their systems. The motivation for this work is to present the research that has been completed for the SOP and summarize the duties of SOP in DNs according to the literature and propose advanced duties for SOP according to modern standards. Finally, future research directions are mentioned to pave the way for research in the coming years to drive the DNs towards more flexibility and 'Robust' from controllability, stability, and protection structure point of view. INDEX TERMS Distribution networks, grid-connected converters, power electronics, soft open point, normally open points.

show abstract

Performance of grid-voltage synchronization algorithms based on frequency-and phase-locked loop during severe grid fault conditions

Cited by 5 publications

References 16 publications

Phasor Measurement Unit Assisted Inverter—A Novel Approach for DC Microgrids Performance Enhancement

Phasor Measurement Unit Assisted Inverter—A Novel Approach for DC Microgrids Performance Enhancement

DC Microgrid Utilizing Artificial Intelligence and Phasor Measurement Unit Assisted Inverter

Soft Open Point in Distribution Networks

Contact Info

Product

Resources

About