Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources

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Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources. / Hosseini Kordkheili, Hadi ; Banejad, Mahdi ; Akbarzadeh Kalat, Ali ; Pouresmaeil, Edris; Catalão, João P.S.

In: Energies, Vol. 11, No. 5, 1161, 06.05.2018.

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Hosseini Kordkheili, Hadi ; Banejad, Mahdi ; Akbarzadeh Kalat, Ali ; Pouresmaeil, Edris ; Catalão, João P.S. / Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources. In: Energies. 2018 ; Vol. 11, No. 5.

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@article{e114bc5595b845228b66aca1149de60c,
title = "Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources",
abstract = "In this paper, the local control structure of a microgrid is partially modified by a Lyapunov-based controller. This controller is derived based on direct Lyapunov stability theory (DLST) in order to calculate proper switching functions for the stable operation of the local controller as well as proper local performance of each inverter-based distributed generation (DG) unit. The main contribution is the use of DLST-based controller in a hierarchical primary control structure along with a DC-side voltage regulator. A current-based droop controller is also introduced along with a voltage harmonic compensation technique. The control limits of droop equations are calculated based on steady-state and dynamic capability curve as well as voltage-frequency ellipse curve. The effect of the variations of voltages and circuit parameters on the capability curves are also investigated and the microgrid (MG) steady-state operation area is obtained. In the proposed method, the DC-voltage variations are regulated by an additional voltage control loop based on a current reference correction signal. The above-mentioned approaches are derived thoroughly with mathematical equations. The effectiveness of the designed controllers is verified by a MATLAB/SIMULINK simulation platform (Matlab/Simulink R2014a, Mathworks, Inc.) with harmonically distorted intermittent loads. The results show the appropriate performance of the proposed controllers during both steady-state and transient dynamic conditions.",
keywords = "capability curves, direct Lyapunov stability theory, hierarchical control, inner control loops, microgrid",
author = "{Hosseini Kordkheili}, Hadi and Mahdi Banejad and {Akbarzadeh Kalat}, Ali and Edris Pouresmaeil and Catal{\~a}o, {Jo{\~a}o P.S.}",
year = "2018",
month = "5",
day = "6",
doi = "10.3390/en11051161",
language = "English",
volume = "11",
journal = "Energies",
issn = "1996-1073",
publisher = "MDPI AG",
number = "5",

}

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TY - JOUR

T1 - Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources

AU - Hosseini Kordkheili, Hadi

AU - Banejad, Mahdi

AU - Akbarzadeh Kalat, Ali

AU - Pouresmaeil, Edris

AU - Catalão, João P.S.

PY - 2018/5/6

Y1 - 2018/5/6

N2 - In this paper, the local control structure of a microgrid is partially modified by a Lyapunov-based controller. This controller is derived based on direct Lyapunov stability theory (DLST) in order to calculate proper switching functions for the stable operation of the local controller as well as proper local performance of each inverter-based distributed generation (DG) unit. The main contribution is the use of DLST-based controller in a hierarchical primary control structure along with a DC-side voltage regulator. A current-based droop controller is also introduced along with a voltage harmonic compensation technique. The control limits of droop equations are calculated based on steady-state and dynamic capability curve as well as voltage-frequency ellipse curve. The effect of the variations of voltages and circuit parameters on the capability curves are also investigated and the microgrid (MG) steady-state operation area is obtained. In the proposed method, the DC-voltage variations are regulated by an additional voltage control loop based on a current reference correction signal. The above-mentioned approaches are derived thoroughly with mathematical equations. The effectiveness of the designed controllers is verified by a MATLAB/SIMULINK simulation platform (Matlab/Simulink R2014a, Mathworks, Inc.) with harmonically distorted intermittent loads. The results show the appropriate performance of the proposed controllers during both steady-state and transient dynamic conditions.

AB - In this paper, the local control structure of a microgrid is partially modified by a Lyapunov-based controller. This controller is derived based on direct Lyapunov stability theory (DLST) in order to calculate proper switching functions for the stable operation of the local controller as well as proper local performance of each inverter-based distributed generation (DG) unit. The main contribution is the use of DLST-based controller in a hierarchical primary control structure along with a DC-side voltage regulator. A current-based droop controller is also introduced along with a voltage harmonic compensation technique. The control limits of droop equations are calculated based on steady-state and dynamic capability curve as well as voltage-frequency ellipse curve. The effect of the variations of voltages and circuit parameters on the capability curves are also investigated and the microgrid (MG) steady-state operation area is obtained. In the proposed method, the DC-voltage variations are regulated by an additional voltage control loop based on a current reference correction signal. The above-mentioned approaches are derived thoroughly with mathematical equations. The effectiveness of the designed controllers is verified by a MATLAB/SIMULINK simulation platform (Matlab/Simulink R2014a, Mathworks, Inc.) with harmonically distorted intermittent loads. The results show the appropriate performance of the proposed controllers during both steady-state and transient dynamic conditions.

KW - capability curves

KW - direct Lyapunov stability theory

KW - hierarchical control

KW - inner control loops

KW - microgrid

U2 - 10.3390/en11051161

DO - 10.3390/en11051161

M3 - Article

VL - 11

JO - Energies

JF - Energies

SN - 1996-1073

IS - 5

M1 - 1161

ER -

ID: 19316423