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http://dx.doi.org/10.5370/KIEEP.2018.67.4.175

Robust Adaptive Power Control against Electric Load Changes in Islanded Micro-grid  

Ha, Yang (School of Electrical & Electronic Engineering, Ulsan College)
Cho, Hyun Cheol (School of Electrical & Electronic Engineering, Ulsan College)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.67, no.4, 2018 , pp. 175-182 More about this Journal
Abstract
In recent years, micro-grid has been widely focused on the fields of renewal energy systems. This paper proposes a novel robust power converter control against arbitrary electric load changes for islanded micro-grid topology. First, we provide a state-space representation of our micro-grid model including power converter and electric load circuit. And then a state feedback control method is applied to construct a nominal control framework. Next, we propose a robust adaptive control law to enhance a control performance against unexpected load perturbation. In addition, we analytically investigate a passivity property for the micro-grid model and carry out computer simulation to demonstrate superiority and reliability of the proposed control methodology.
Keywords
Islanded micro-grid; Power control; Robust adaptive control; Perturbation; Passivity theory;
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