NDLI: Robust Output Feedback Control of the Voltage Source Inverter in an AC Microgrid

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Robust Output Feedback Control of the Voltage Source Inverter in an AC Microgrid

Content Provider	MDPI
Author	Khan, Hamid Saeed Memon, Attaullah Y.
Copyright Year	2022
Description	This paper presents the mathematical model and control of the voltage source inverter (VSI) connected to an alternating current (AC) microgrid. The VSI used in this work was a six-switch three-phase PWM inverter, whose output voltages were controlled in a synchronous ( $dq$ ) reference frame via a sliding mode control strategy. The control strategy required only output voltages; other states of the system were estimated by using a high-gain observer. The power-sharing among multiple inverters was achieved by solving power flow equations of the electrical network. The stability analysis showed that the error was ultimately bound in the case of the real PWM inverter and/or with a nonlinear load in the electrical network. The microgrid was simulated using the SimPowerSystems Toolbox from MATLAB/Simulink. The simulation results show the effectiveness of the proposed control scheme. The output voltage regulation of the inverter and power-sharing was achieved with the ultimately bounded error for the linear load. Later, the nonlinear load was also included in the electrical network and the error was shown to remain ultimately bounded. The output voltage regulation and power-sharing were achieved with the nonlinear load in the system.
Starting Page	5586
e-ISSN	19961073
DOI	10.3390/en15155586
Journal	Energies
Issue Number	15
Volume Number	15
Language	English
Publisher	MDPI
Publisher Date	2022-08-01
Access Restriction	Open
Subject Keyword	Energies Industrial Engineering Microgrids Observers Output Feedback Power System Control Sliding Mode Control Voltage Control
Content Type	Text
Resource Type	Article

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