Control of islanded DC microgrids using nonlinear adaptive decentralized controllers

M. A Mahmud; T. K Roy; S Saha; M. E Haque; H. R Pota

doi:10.1109/IAS.2017.8101768

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Control of islanded DC microgrids using nonlinear adaptive decentralized controllers

Conference paper

Peer reviewed

Control of islanded DC microgrids using nonlinear adaptive decentralized controllers

M. A Mahmud, T. K Roy, S Saha, M. E Haque and H. R Pota

2017 IEEE Industry Applications Society Annual Meeting, pp.1-6

IEEE Industry Applications Society Annual Meeting (IAS), 2017 (Cincinnati, United States, 01-Oct-2017–05-Oct-2017)

Institute of Electrical and Electronics Engineers

2017

DOI: https://doi.org/10.1109/IAS.2017.8101768

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Abstract

adaptation law

common DC-bus voltage

DC microgrids

DC-link capacitor

decentralized controller

adaptive controllers

feedback linearization technique

battery energy storage systems

BESS

In this paper, an islanded DC microgrid is controlled using nonlinear adaptive decentralized controllers. The decentralized controllers are designed for the DC microgrid components which supply power (e.g., renewable energy sources and other standby generators) and store energy such as battery energy storage systems (BESSs). The power sources and BESSs in DC microgrids are decoupled using feedback linearization technique and adaptive controllers are then designed by considering the DC-link capacitor of these components as unknown. The adaptation law is used to estimate the value of the DC-link capacitor while ensuring the desired value of the common DC-bus voltage. The effectiveness of the proposed controller is evaluated on a DC microgrid with a fuel cell, solar photovoltaic (PV) unit, BESS, and DC loads. Simulation results are carried out under different operating conditions and compared with an existing proportional integral (PI) controller.

Details

Title: Control of islanded DC microgrids using nonlinear adaptive decentralized controllers
Authors: M. A Mahmud (Author) - Deakin University
T. K Roy (Author) - Deakin University
S Saha (Author) - Deakin University
M. E Haque (Author) - Deakin University
H. R Pota (Author) - UNSW Australia
Publication details: 2017 IEEE Industry Applications Society Annual Meeting, pp.1-6
Conference details: IEEE Industry Applications Society Annual Meeting (IAS), 2017 (Cincinnati, United States, 01-Oct-2017–05-Oct-2017)
Publisher: Institute of Electrical and Electronics Engineers
Date published: 2017
DOI: 10.1109/IAS.2017.8101768
ISBN: 9781509048946
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99532306502621
Output Type: Conference paper

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