2016/09/26 by Marko Angjelichinoski, Angjelichinoski, Marko, Stefanovic Cedomir +3
Engineering · #FOS: Computer and information sciences #Information Theory (cs.IT) #Low-power high-performance VLSI design #Microgrid Control and Optimization #Smart Grid Energy Management
paper · pdf · doi:10.48550/arxiv.1609.08117
openalex publication_date 2016/09/26 · openalex created_date 2017/09/15 · openalex updated_date 2026/07/28
We study a communication framework for nonlinear multibus DC MicroGrids based\non a deliberate modification of the parameters of the primary control and\ntermed power talk. We assess the case in which the information is modulated in\nthe deviations of reference voltages of the primary control loops and show that\nthe outputs of the power talk communication channels can be approximated\nthrough linear combinations of the respective inputs. We show that the\ncoefficients of the linear combinations, representing equivalent channel gains,\ndepend on the virtual resistances of the primary control loops, implying that\nthey can be modified such that effective received signal-to-noise ratio (SNR)\nis increased. On the other hand, we investigate the constraints that power talk\nincurs on the supplied power deviations. We show that these constraints\ntranslate into constraints on the reference voltages and virtual resistances\nthat are imposed on all units in the system. In this regard, we develop an\noptimization approach to find the set of controllable virtual resistances that\nmaximize SNR under the constraints on the supplied power deviations.\n