Energy management system with equalization algorithm for distributed energy storage systems in PV-active generator based low voltage DC microgrids

Abstract

This paper presents a centralized strategy for equalizing the state of charge of distributed energy storage systems in an islanded DC microgrid. The proposed strategy is based on a simple algorithm called equalization algorithm, which modifies the charge or discharge rate by weighting the virtual resistor of local droop control loops at each distributed energy storage system. The proposed strategy, can be used as an additional function of the microgrid energy management system where the state of charge of distributed ESS is equalized within a determined window of time. Finally, real-time simulation results of a low voltage DC microgrid are presented in order to verify the performance of the proposed approach.

A Robot-Soccer-Coordination Inspired Control Architecture Applied to Islanded Microgrids

“…At the same time, the other defender goes to obstruct another opponent in order to intercept possible passes or just avoid a free motion of the opponent [31]. In this application, an equalization algorithm, as proposed in [43] and [44], is consider as a cooperative behavior for the equalization of the SoC between distributed ESSs. The equalization programme is summarized in the Algorithm 1.…”

Energy Balance Control of Energy Storage System Based on Improved Virtual DC Motor

“…However, this method requires communication between the battery packs during calculating the average value of the SoC. [8] proposes weighting the virtual resistance to modify the charge/discharge rate of the energy storage system, but inertia is not taken into account. [9] proposes introducing virtual DC motor control in double closed-loop constant voltage control, which cannot satisfy the energy balance of the energy storage unit but provides damped inertia support for the system.…”

Arquitecturas Centralizadas de Coordinación. Extrapolación del Fútbol de Robots al Control de Modo de Operaciones de Micro-Redes

“…En esta aplicación, un algoritmo de ecualización como se ha propuesto en [156] Las salidas del algoritmo de ecualización corresponden a las señales Sy20 y Sy21 que corresponden a los factores α1 y α2 respectivamente. Dichos factores son utilizados para ponderar los coeficientes Droop K p del lazo de control Droop primario de cada ESS como se vio en la Figura 7.2.…”