Fudan University has made important breakthroughs in key technologies for photovoltaic grid-connected power generation

Recently, good news came from the School of Information of our university. Based on many years of research, the photovoltaic grid-connected inverter device developed by Fudan University has achieved breakthrough technical results in "MW-level high-precision real-time control and circuit optimization" and "smart grid access and new energy coordinated control technology" through industry-university-research transformation, solving the core technical problems of high-performance photovoltaic grid-connected power generation.

According to Associate Professor Sun Yaojie, the leader of the research team, new energy is a national strategic emerging industry, among which photovoltaic grid-connected power generation is the main component of new energy power generation and the focus of smart grid technology application. my country plans to add 20GW of photovoltaic power station installed capacity by 2020. High efficiency, high reliability, long life, and integrated MW-level high-power conversion and large-scale distributed coordinated control that meet the high penetration rate of grid access are key technologies for photovoltaic grid-connected power generation, involving multiple disciplines such as power electronics, automatic control, power systems and microelectronics. The new technologies of this Fudan project mainly include: (1) special design and manufacturing process technology of high-reliability power electronics; (2) high-efficiency power conversion and system efficiency optimization technology; (3) operation and protection control technology matching the grid access characteristics.

The products developed in this project have passed grid access licenses in seven countries including Germany, the United Kingdom, and Spain, and have passed certification tests by international authoritative organizations such as PHOTON, VED, and BV, and have obtained the "Golden Sun" certification of the China Quality Certification Center. The MW-level grid-connected inverter developed has become the first product in my country to pass the CQC power station energy efficiency test. As the only selected product in China, it was selected together with products from the internationally renowned company Emerson to be included in the large-scale photovoltaic power station for demonstration and application in the world's highest extreme geographical and climatic environment at an altitude of 3,887 meters in Shannan, Tibet, China. The developed distributed grid-connected inverter achieved the "Double A" honor in the public test of the international authoritative organization PHOTON in 2011, and its core technical indicators ranked first in Asia and tied for 11th in the world, with excellent results.

During the three years of project research, the cumulative installed capacity of photovoltaic demonstration power stations at home and abroad exceeded 600MW, and the cumulative economic benefits reached 900 million yuan. Jiangsu Zhaofu New Energy Company and Jiangsu Aiso New Energy Company, which introduced the technological achievements of Fudan University, were listed as key supported enterprises in the "Outline of the Adjustment and Revitalization Plan of Jiangsu Province's New Energy Industry". The project results are of great significance for breaking the technology monopoly of foreign companies, enhancing the independent supporting capabilities of core devices in China's photovoltaic industry chain, and realizing the large-scale industrialization of large-capacity photovoltaic grid-connected power stations.