Abstract：The medium voltage DC distribution network is a significant technology for future smart grid with the integration of large-capacity renewable energy, typical as photovoltaic power generation. During recent years, most researches on photovoltaic generation focus on the integration into AC grid or low voltage DC grid, and the less on the integration into medium voltage DC grid. The development trends and specific demand of medium voltage DC distribution networks were in-depth investigated; the existing integration technologies of photovoltaic generation into low voltage DC grid were discussed, including the topologies and control strategies in the first and the second conversion stage. Based on these, the feasible solutions were proposed: the differential power processing circuits can be employed as the first conversion stage and the input-parallel output-series (IPOS) structure can be used for the second conversion stage to achieve high efficiency and high voltage transfer ratio simultaneously. The results can take great reference for the development of future photovoltaic DC integration.
标题：面向中压直流配电网的光伏发电接入技术综述与分析
title:An Overview and Analysis of Photovoltaic Power Integration Technology for Medium Voltage DC Distribution Network
