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An Optimal Current Control of Interlink Converter Using an Explicit Model Predictive Control
Int. J. Fuzzy Log. Intell. Syst. 2018;18(4):284-291
Published online December 25, 2018
© 2018 Korean Institute of Intelligent Systems.

Ismi Rosyiana Fitri and Jung-Su Kim

Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul, Korea
Correspondence to: Jung-Su Kim (jungsu@seoultech.ac.kr)
Received November 13, 2018; Revised December 10, 2018; Accepted December 21, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
An interlink converter (IC) presents in a hybrid microgrid allowing a bidirectional power exchange between AC and DC sub-grids. In this paper, a model predictive control (MPC)-based IC current controller is employed, taking the current constraint into account to ensure the safety of IC. To reduce online computation burden of the MPC, a tabular form of MPC named Explicit MPC is applied. The simulation result shows that the proposed IC controller successfully maintains the power supply-demand balance of the hybrid microgrid. Moreover, the proposed method keeps the power exchange value in the acceptable range, particularly under high loading condition.
Keywords : Hybrid microgrid, Interlink converter, MPC