Robust, Accurate, and Fast Decentralized Power Sharing Mechanism for Isolated DC Microgrid Using Droop-Based Sliding-Mode Control

Veysi, Mohammad; Aghaei, Jamshid; Soltanpour, Mohammad Reza; Shasadeghi, Mokhtar; Bahrani, Behrooz; Ryan, Daniel Joseph

doi:10.1109/tsg.2022.3181494

Cited by 25 publications

(14 citation statements)

References 26 publications

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“…Dispersed control has gained recognition as a suitable method for regulating MGs due to its advantages over centralized control, particularly its minimal impact on the data transmission infrastructure [7,8]. Figure 3 illustrates the typical layout of a dispersed control scheme.…”

Section: Dispersed Design In Mgsmentioning

confidence: 99%

“…By addressing these challenges and implementing a tiered control approach, MGs can achieve trustworthy and robust functioning. In a localized configuration, control systems at a basic level are typically designed to rely on local data, making the need for a sophisticated data transmission network unnecessary in this context [7][8][9]. As it may take some time for data to be transmitted to fairly allocate energy within MG units, an alternative strategy is usually employed during the initial phase of administration [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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The nexus of energy in microgrids: A review on communication barriers in distributed networks auxiliary controls

Ahmed,

Basit,

e Mustafa

et al. 2023

IET Generation Trans & Dist

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Microgrids are a new concept resulting from decentralized power sources, which have changed energy utility grid topography. As this promising field is penetrated, control must be streamlined immediately. This paper analyses key control mechanisms in energy utility networks, including centralized, decentralized, and distributed setups. The focus is on the auxiliary category as the various benefits and drawbacks of each approach is investigated. Information interchange architectures that enable multiple control techniques in the auxiliary control domain are examined using distributed energy networks. The research emphasizes the necessity of auxiliary control in ensuring reliable and effective utility infrastructure operation but notes the lack of a comprehensive scholarly reference. Additionally, the study explores key concerns in utility grids' auxiliary control mechanisms, emphasizing information‐sharing system limits. The goal is to demonstrate the importance of auxiliary control and evaluate its challenges, such as latency, which require new solutions for a seamless transition to a sustainable energy future through rigorous academic assessment. At the auxiliary level, complex, decentralized regulatory mechanisms are recommended to handle transmission channel bandwidth and operational overhead in energy utility networks. These innovative measures have the potential to transform the fundamental structure of our energy landscape, heralding in unprecedented efficiency and sustainability.

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Section: Dispersed Design In Mgsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The nexus of energy in microgrids: A review on communication barriers in distributed networks auxiliary controls

Ahmed,

Basit,

e Mustafa

et al. 2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…Among various decentralized control methods, the droop control technique is used for proportional sharing of power among DGs. An improved nonlinear droop structure is adopted using the sliding mode controller-based droop method for distribution of accurate power among the DGs [9]. Te determination of droop coefcients in the droop technique is fxed and it is dependent on the rating of the DGs, which creates problem of perturbation of voltage and current parameter at the DC buses.…”

Section: Introductionmentioning

confidence: 99%

Conservation Voltage Reduction Strategy for Autonomous Microgrid with Improved Voltage-CurrentDroop-Based Inverter Control Framework

Jha

Kumar

Samantaray

2023

International Transactions on Electrical Energy Systems

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In a conventional AC distribution system, the conservation voltage reduction (CVR) strategy is widely employed to lower down the voltage of specific load to lower the power consumption. The wide applicability of demand side management (DSM) using CVR in a stand-alone microgrid through VSI-based energy sources is a thrust area, that is, not examined yet and needs to be explored. The fast dynamics and flexible control are the characteristics of the voltage-current droop method which further increases the inertia of the voltage source inverter. For utilizing these advantages of this droop method, it is required to determine the accurate droop gain to properly coordinate the distribution of power among DGs. In this paper, the voltage-current droop method is utilized to carry out the function of DSM, and a modified droop computation method for voltage-current droop is formulated to determine the impedance from initial of the DG point to the downstream end for multifeeder network. As most of the droop control techniques emulate the conventional power grid such as Q-V droop control which reduces voltage with the increase of reactive power, the research prospect is very high in devising the new droop computation method for voltage-current droop for accurate control of power. In addition to it, the work is extended to apply the benefits of voltage-current droop to execute DSM strategy in standalone MG. Moreover, the capability of the proposed estimation of droop parameter is implemented on a standalone 5-bus single-feeder multi-DGs network, and furthermore, the scheme is applied to IEEE-9 bus multifeeder multi-DGs network to show the applicability of the proposed scheme. The simulation results produced from MATLAB/Simulink are compared with the decentralized power-based droop method and conventional voltage-current droop technique to analyse the performance of the devised scheme.

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“…For islanded DC microgrids, ref. [35] introduces a droop-based SM controller featuring an improved nonlinear droop model and robust performance against uncertainties and external disturbances.…”

Section: Introductionmentioning

confidence: 99%

Droop-Free Sliding-Mode Control for Active-Power Sharing and Frequency Regulation in Inverter-Based Islanded Microgrids

Rosero,

Gavilánez,

Mejía-Echeverría

2023

Energies

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This paper introduces a simple decentralized sliding-mode (SM) approach to control active power sharing by regulating the local frequency in inverter-based islanded microgrids (MGs). Its sliding surface arises from the frequency correction term introduced in the droop-free technique; it relates local active power to neighboring MGs’ active power by considering available communications among voltage source inverters. Then, this schema allows one to avoid hierarchical control just as the droop-free method does, and the benefits associated are twofold. First, it reduces the steady-state frequency error while providing accurate active power distribution. Second, the system stays reliable, withstands uncertainties, and provides a fast transient response. A Lyapunov analysis confirms stability, and simulations on a realistic four-inverter MG platform substantiate the control scheme’s effectiveness. Its performance regards frequency regulation while achieving active power sharing, stability, and robustness against clock drifts and load steps.

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Robust, Accurate, and Fast Decentralized Power Sharing Mechanism for Isolated DC Microgrid Using Droop-Based Sliding-Mode Control

Cited by 25 publications

References 26 publications

The nexus of energy in microgrids: A review on communication barriers in distributed networks auxiliary controls

The nexus of energy in microgrids: A review on communication barriers in distributed networks auxiliary controls

Conservation Voltage Reduction Strategy for Autonomous Microgrid with Improved Voltage-CurrentDroop-Based Inverter Control Framework

Droop-Free Sliding-Mode Control for Active-Power Sharing and Frequency Regulation in Inverter-Based Islanded Microgrids

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