SICE Journal of Control, Measurement, and System Integration
Online ISSN : 1884-9970
Print ISSN : 1882-4889
ISSN-L : 1882-4889
CONTRIBUTED PAPERS
Robust AC Voltage Regulation of Microgrids in Islanded Mode with Sinusoidal Internal Model
Naoki HAYASHIMasaaki NAGAHARAYutaka YAMAMOTO
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2017 Volume 10 Issue 2 Pages 62-69

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Abstract

This paper shows that the H control is an effective tool for electric voltage regulation. We here consider robust AC voltage regulation of microgrids in an islanded mode. When a microgrid is disconnected from a utility grid, it automatically switches to an islanded mode to provide necessary power using a battery system until the grid is recovered. In the islanded mode, it is important to regulate the electric voltage generated in the grid to track a predetermined AC voltage reference. A difficulty is that there exits unmodeled dynamics in the grid that may cause large power fluctuations. To resolve this problem, we adapt the H control with a sinusoidal internal model to robust AC voltage regulation in microgrids. Simulation and experimental results confirm that the proposed H control can achieve robust tracking performance.

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© 2017 The Society of Instrument and Control Engineers
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