Fuzzy Mathematics-Based Outer-Loop Control Method for Converter-Connected Distributed Generation and Storage Devices in Micro-Grids

The modern changes in electric systems present new issues for control strategies. When power converters and distributed energy resources are included in the micro-grid, its model is more complex than the simplified representations used, sometimes losing essential data. This paper proposes a unified...

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Bibliographic Details
Published in:Computation 2021-12, Vol.9 (12), p.134
Main Authors: Castro, Lorena, Bueno-López, Maximiliano, Mora-Flórez, Juan
Format: Article
Language:English
Subjects:
Control algorithms
Control methods
Control systems
Controllers
Design
Distributed generation
Energy resources
Energy sources
Fuzzy control
Fuzzy sets
fuzzy-logic control (FLC)
Heuristic
Knowledge
Mathematical analysis
Mathematics
Methods
micro-grid
Nonlinear systems
outer-loop control
Parameter estimation
Power converters
Variables
voltage source converter (VSC)
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Summary:The modern changes in electric systems present new issues for control strategies. When power converters and distributed energy resources are included in the micro-grid, its model is more complex than the simplified representations used, sometimes losing essential data. This paper proposes a unified fuzzy mathematics-based control method applied to the outer loop of a voltage source converter (VSC) in both grid-connected and islanded modes to avoid using simplified models in complex micro-grids and handle the uncertain and non-stationary behaviour of nonlinear systems. The proposed control method is straightforwardly designed without simplifying the controlled system. This paper explains the design of a fuzzy mathematics-based control method applied to the outer-loop of a VSC, a crucial device for integrating renewable sources and storage devices in a micro-grid. Simulation results validated the novel control strategy, demonstrating its capabilities for real field applications.
ISSN:2079-3197
2079-3197
DOI:10.3390/computation9120134