| Title |
Robust Adaptive Power Control against Electric Load Changes in Islanded Micro-grid |
| Authors |
하양(Yang Ha) ; 조현철(Hyun Cheol Cho) |
| DOI |
http://doi.org/10.5370/KIEEP.2018.67.4.175 |
| Keywords |
Islanded micro-grid ; Power control ; Robust adaptive control ; Perturbation ; Passivity theory |
| 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. |