NDLI: Disturbance-rejection voltage control of an isolated microgrid by invariant sets

Content Provider	IET Digital Library
Author	Bayoumi, Ehab Soliman, Mostafa Soliman, Hisham M.
Abstract	New disturbance-rejection control for an islanded microgrid (MG) is presented in this study. The proposed method can be used with MGs consisting of several distributed generation (DG) units and local loads with both grid-connected and islanded modes capability. The proposed controller utilises state feedback with integral control to track the desired voltage. The uncertainty of the load parameters is tackled as a disturbance. The proposed controller is designed using the method of invariant ellipsoids to guarantee robust stability, fast transient response and zero steady-state error. The controller synthesis is formulated as a convex optimisation problem that is effectively solved using linear matrix inequality methods. The performance of the proposed MG voltage controller is assessed by several simulations in the presence of random load variations, load unbalances and step changes in the voltage reference. Moreover, the power mismatch during accidental islanding event is also considered.
Starting Page	2331
Ending Page	2339
Page Count	9
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 13, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.1019
Journal	IET Renewable Power Generation
Publisher Date	2020-06-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Control of Electric Power System Control System Analysis Control System Synthesis Controller Synthesis Current Control DG Unit Direct-quadrature Current Controller Distributed Generation Units Distributed Power Generation Disturbance-rejection Voltage Control Dq-current Controller Electric Current Control Grid-connected Mode Integral Control Invariant Sets Islanded Microgrid Islanded Voltage Reference Islanding Detection Isolated Microgrid Linear Matrix Inequalities Linear Matrix Inequality Method Load Parameter Load Uncertainty Load Voltage MG Voltage Controller MGs Power Generation Control Power Grid Power System Control Random Load Variations Reactive-power Injection Robust Control Robust Stability Stability in Control Theory State Feedback Synthesis Method Transient Response Voltage Control Zero Steady-state Error
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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