China Electric Equipment has successfully developed the country's first 300MVA pulse power supply system for nuclear fusion, marking a key breakthrough in China's controllable nuclear fusion energy technology.

Recently, the first batch of 300MVA pulse power supply system equipment for the controllable nuclear fusion device "China Circulation No. 3", jointly developed by the Science and Technology Research Institute of China Electrical Equipment, Xuji Power Electronics, and the Southwest Institute of Nuclear Physics of China National Nuclear Corporation, has successfully completed testing and acceptance.

This system has successfully applied high-voltage cascaded supercapacitor energy storage technology for the first time in China to supply power to controllable nuclear fusion circumferential field coils, replacing traditional flywheel energy storage methods and achieving comprehensive improvements in key indicators such as power supply capacity, operating efficiency, control accuracy, and response speed.

The project team independently developed core components such as CMS and PCS for the special working conditions of supercapacitor energy storage characteristics and controllable nuclear fusion magnet power supply, and innovatively proposed a graded protection strategy that cooperates with the downstream load, significantly improving the safety and reliability of fusion experiments. The entire system has reserved sufficient expansion interfaces and capacity, laying a solid foundation for the continuous expansion of China's future fusion experiment scale.

The successful development of this system has made China's electrical equipment the only enterprise in China with the ability to develop and implement the full chain technology from "front-end power supply system to back-end fusion power supply". This project is an important achievement of China Electrical Equipment's active implementation of the State owned Assets Supervision and Administration Commission's strategic deployment for the future energy industry of "controllable nuclear fusion", marking a solid step for China in the transformation of controllable nuclear fusion technology from scientific research exploration to engineering and industrialization. Editor/Yang Beihua