DC Power Distribution System Architecture of PEDF Buildings: A Comprehensive Review

With the wide application of distributed energy resources and the rapid development of renewable energy technologies, building energy systems are gradually evolving towards high efficiency, flexibility and sustainability.PEDF buildings (Photovoltaic Electricity Generation, Electricity Storage, direct current Distribution and Flexible Electricity Consumption), as an emerging building energy system, provide a solution for the efficient use of renewable energy and the optimization of energy consumption. While the traditional alternating current (AC) grid has problems of energy loss and instability in the transmission and distribution of energy, the direct current (DC) distribution grid can reduce energy loss and improve the efficiency of energy utilization. The DC distribution grid architecture of PEDF buildings can not only supply the DC power generated by the PV power generation system directly to the load equipment inside the building, but also store the excess power to improve the stability and reliability of the energy, and also It can realize the optimal distribution and management of energy through the intelligent energy management system, which can effectively reduce energy waste, improve energy utilization efficiency, and provide strong support for the sustainable development of the building. This paper summarizes the research progress of PEDF buildings in establishing DC distribution network architecture, which can better understand the advantages and disadvantages of the building and the challenges it faces, and aims to provide reference for researchers and practitioners in this field.