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Control, Operation and Power Sharing among Parallel Converter-Interfaced DERs in a Microgrid in the Presence of Unbalanced and Harmonic Loads

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Authors
Chandrasensa, Ruwan
Shahnia, Farhad
Rajakaruna, S.
Ghosh, A.
Date
2013
Type
Conference Paper
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Abstract

This paper demonstrates power management and control of DERs in an autonomous MG. The paper focuses on the control and performance of converter-interfaced DERs in voltage controlled mode. Several case studies are considered for a MG based on the different types of loads supplied by the MG (i.e. balanced three-phase, unbalanced, single-phase and harmonic loads). DERs are controlled by adjusting the voltage magnitude and angle in their converter output through droop control, in a decentralized concept. Based on this control method, DERs can successfully share the total demand of the MG in the presence of any type of loads. This includes proper total power sharing, unbalanced power sharing as well as harmonic power sharing, depending on the load types. The efficacy of the proposed power control, sharing and management among DERs in a microgrid is validated through extensive simulation studies using PSCAD/EMTDC.

Citation
Chandrasensa, Ruwan and Shahnia, Farhad and Rajakaruna, Sumedha and Ghosh, Arindam. 2013. Control, Operation and Power Sharing among Parallel Converter-Interfaced DERs in a Microgrid in the Presence of Unbalanced and Harmonic Loads, in Negnevitsky, M. (ed), Proceedings of the Australasian Universities Power Engineering Conference (AUPEC), Sep 29-Oct 3 2013. Hobart, Tasmania, Australia: University of Tasmania.
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Proceedings of the 2013 Australasian Universities Power Engineering Conference
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