Simulation of Power Router-Based DC Distribution Systems with Distributed Generation and Energy Storage Units

Abstract

The development of the electric power industry needs to be understood against the current backdrop of the transition to technological platforms facilitating the adoption of smart grids. Smart grids can be made up of separate clusters (microgrids) consisting of power consumers, power grids, and distributed generation (DG) units. To improve energy efficiency, DC microgrids can be integrated into smart grids to deliver power to consumers within a building (or several buildings) and at the sites of C&I facilities. It is advisable to carry out integrations of DC and AC microgrids with DG and energy storage units on the basis of power routers used to couple grids of different voltage classes. This study outlines a computer model of power router-based integration of DC and AC microgrids with distributed generation and energy storage units. The model was developed in the MATLAB environment. The paper also features the results of a study of the proposed methods as applied to voltage control under normal and emergency operating conditions of a DC and AC distribution grid.

A Backflow Power Suppression Strategy for Dual Active Bridge Converter Based on Improved Lagrange Method

“…The energy router is designed for energy to flow in both directions, and the intermediate DC link utilizes a bi-directional DC-DC converter. In practical applications, the dual-active bridge (DAB) converter is often used [5,6]. The DAB converter has the advantage of higher power density and easy implementation of soft switches, in addition to meeting the bidirectional flow of energy [7,8].…”