In 2023, the 75th International Exhibition of Inventions in Nuremberg, Germany, was held at the International Exhibition Center in Nuremberg, Germany, on October 28-30, local time. The three-day high quality International Invention Exhibition was successfully concluded on October 30. show The theme of the exhibition is "Creativity, Invention and New products", and more than 500 invention projects from more than 30 countries are exhibiting. China was invited to serve as the guest of honor for the exhibition's 75th anniversary celebration year, and the international jury selected the exhibition during the exhibition Gold, silver, bronze and special awards. Tianjin Huakai Electric Co., LTD., together with Tsinghua University and Fuzhou University, won the gold medal in the exhibition for the project of "Urban Rail Flexible and straight intelligent energy control system".

The project has developed a set of intelligent energy control system for urban rail transit flexible DC traction power supply system, including collaborative control and protection devices based on high-speed communication and synchronous timing and centralized energy control advanced Application software; The real-time optimal control technology based on approximate optimal mapping is proposed. The power flow optimization is carried out in real time with the control equipment by quickly refreshing the control instructions. The energy control system can be used under normal operating conditions In order to significantly improve the energy-saving and carbon reduction effect of urban rail transit, the power supply reliability can be actively improved under the fault operation mode, thus reducing the traction power supply system's dependence on the external power grid, and thus reducing the traction power supply system's dependence on the external power grid External power supply construction requirements.

Germany Nuremberg International Exhibition of Inventions (iENA) was founded in 1948, is the world's oldest, one of the most influential international exhibition of inventions, because of its fair evaluation, large scale, enjoy the highest in the international exhibition industry Authoritative and reputable, its awards are recognized by governments around the world. This exhibition brings together more than 500 invention patents from all over the world involving medical, aviation, environmental protection, machinery, construction, electric power and other industries. This year The Chinese delegation reached the largest scale in history, bringing 143 invention projects to the exhibition, 80 adult projects and 63 youth projects. The frequent highlights of scientific and technological achievements demonstrate our country's scientific and technological innovation strength to the world.It has effectively promoted exchanges and cooperation in science and technology innovation with other countries