Next Article in Journal
Study on Electrode Potential of Zinc Nickel Single-Flow Battery during Charge
Next Article in Special Issue
Assessment of Credible Capacity for Intermittent Distributed Energy Resources in Active Distribution Network
Previous Article in Journal
Nonlinear Synergetic Governor Controllers for Steam Turbine Generators to Enhance Power System Stability
Previous Article in Special Issue
Secure Plug-in Electric Vehicle (PEV) Charging in a Smart Grid Network
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Energies 2017, 10(8), 1086; https://doi.org/10.3390/en10081086

Investigation on the Development of a Sliding Mode Controller for Constant Power Loads in Microgrids

1
Department of Electrical Engineering & Renewable Energy, Oregon Tech, Klamath Falls, OR 97601, USA
2
Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA
3
Department of Electrical and Electronics Engineering, University of Johannesburg, Auckland Park 2006, South Africa
4
Department of Industrial Engineering, University of Salerno, 84084 Salerno, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 17 May 2017 / Revised: 22 June 2017 / Accepted: 18 July 2017 / Published: 26 July 2017
(This article belongs to the Special Issue Innovative Methods for Smart Grids Planning and Management)

Abstract

To implement renewable energy resources, microgrid systems have been adopted and developed into the technology of choice to assure mass electrification in the next decade. Microgrid systems have a number of advantages over conventional utility grid systems, however, they face severe instability issues due to the continually increasing constant power loads. To improve the stability of the entire system, the load side compensation technique is chosen because of its robustness and cost effectiveness. In this particular occasion, a sliding mode controller is developed for a microgrid system in the presence of constant power loads to assure a certain control objective of keeping the output voltage constant at 480 V. After that, a robustness analysis of the sliding mode controller against parametric uncertainties was performed and the sliding mode controller’s robustness against parametric uncertainties, frequency variations, and additive white Gaussian noise (AWGN) are presented. Later, the performance of the proportional integral derivative (PID) and sliding mode controller are compared in the case of nonlinearity, parameter uncertainties, and noise rejection to justify the selection of the sliding mode controller over the PID controller. All the necessary calculations are reckoned mathematically and results are verified in a virtual platform such as MATLAB/Simulink with a positive outcome. View Full-Text
Keywords: sliding mode control; constant power load; negative incremental impedance; robustness analysis; chattering reduction; microgrid stability; noise rejection sliding mode control; constant power load; negative incremental impedance; robustness analysis; chattering reduction; microgrid stability; noise rejection
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Hossain, E.; Perez, R.; Padmanaban, S.; Siano, P. Investigation on the Development of a Sliding Mode Controller for Constant Power Loads in Microgrids. Energies 2017, 10, 1086.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top