Finite Radical Field Extensions and Crossed Homomorphisms

AbstractWe extend to arbitrary finite radical extensions the results of Barrera-Mora and Velez (J. Algebra162(1993), 295–301) concerning simple radical extensions and we obtain in terms of crossed homomorphisms new characterizations of Kneser extensions andΔ-Cogalois extensions introduced by Albu and Nicolae (J. Number Theory52(1995), 299–318)

Resilient DC LV communities – UPB demonstrator

This work presents the architecture and operational features of a demonstrator developed at the premises of MicroDERLab Research Group at UPB that consists of two interconnected DC low voltage microgrids aiming to serve several research projects that focus on resilient DC LV communities. The architecture of the demonstrator uses a case-driven approach to validate and demonstrate the toolkits to be developed. Concretely, the demonstrator aims to facilitate the experimental assessments of several applications from monitoring and active power management of energy consumption in prosumers’ world, to aggregation of measurement data for modelling, planning, integration, operation and evaluation of distributed Energy Storage Systems. One of the major innovation of the proposed architecture consists in the extension of the functionality of the Unbundled Smart Meter (USM), the so called SMX side that processes all the information coming from the micro-controller of the energy router (ER). Simulated results of a distributed and adaptive energy management system to be tested on this demonstrator are also presented, while briefing a number of use-cases in line with several business models that led us to this design