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Information 2016, 7(1), 18; doi:10.3390/info7010018

Communication-Theoretic Model of Power Talk for a Single-Bus DC Microgrid

1
Department of Electronic Systems, Aalborg University, Aalborg 9220, Denmark
2
Department of Energy Technology, Aalborg University, Aalborg 9220, Denmark
*
Author to whom correspondence should be addressed.
Academic Editors: Mikael Skoglund, Lars K. Rasmussen and Tobias Oechtering
Received: 20 November 2015 / Revised: 17 February 2016 / Accepted: 25 February 2016 / Published: 21 March 2016
(This article belongs to the Special Issue Communication Theory)
View Full-Text   |   Download PDF [868 KB, uploaded 21 March 2016]   |  

Abstract

Power talk is a method for communication among voltage control sources (VSCs) in DC microgrids (MGs), achieved through variations of the supplied power that is incurred by modulation of the parameters of the primary control. The physical medium upon which the communication channel is established is the voltage supply level of the common MG bus. In this paper, we show how to create power talk channels in all-to-all communication scenarios and implement the signaling and detection techniques, focusing on the construction and use of the constellations or arbitrary order. The main challenge to the proposed communication method stems from random shifts of the loci of the constellation symbols, which are due to random load variations in the MG. We investigate the impact that solutions that combat the effects of random load variations by re-establishing the detection regions have on the power talk rate. View Full-Text
Keywords: power talk; DC microgrids; microgrid communications power talk; DC microgrids; microgrid communications
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Angjelichinoski, M.; Stefanović, Č.; Popovski, P.; Blaabjerg, F. Communication-Theoretic Model of Power Talk for a Single-Bus DC Microgrid. Information 2016, 7, 18.

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