Recently, HNZC Electric Vehicle Technology Group, a leading silicon carbide power device technology company in China, successfully developed silicon carbide high-power hydrogen fuel cell DC/DC converters, bringing revolutionary innovations to hydrogen vehicle fuel cell DC/DC converters. .
The chemical formula of silicon carbide is SiC, the scientific name of wide-bandgap semiconductor. Because of its “ultra-high frequency”, “high withstand voltage”, and “low resistance” characteristics, it has become the diamond in the crown of the core technology of hydrogen vehicles.
In October 2017, HNZC took the lead in undertaking China’s national key R&D plan “New Energy Vehicles” key special project-“Wide Bandgap Semiconductor Motor Controller Development and Industrialization” project. After three years, HNZC has combined with China’s cutting-edge scientific research resources to overcome three basic scientific problems and break through six key technical bottlenecks. The silicon carbide high-power fuel cell DC/DC converter is a major achievement of the project, which is the industry’s first. Test and application data show that silicon carbide power devices have three excellent performances: “ultra-high frequency”, “high withstand voltage”, and “low resistance”, bringing revolutionary innovations to hydrogen vehicle fuel cell DC/DC converters .
The hydrogen energy vehicle fuel cell DC/DC converter developed by HNZC has increased the switching frequency by more than 4 times and the power density by more than 3 times compared with traditional IGBT-based module converters. The average system efficiency is greater than 97%, and the maximum efficiency can reach 99. %.
The core component of China’s first hydrogen fuel cell vehicle “Beyond One”-DC/DC converter, was born in the hands of HNZC’s scientific and technical personnel-2003, undertook and completed a number of national 863 plan fuel cell car conversion During the “Twelfth Five-Year Plan” period, we will continue to undertake related topics of the National 863 Program, develop DC converters for fuel cell commercial vehicles, and successfully export to Canada for vehicle applications.
At present, HNZC hydrogen fuel cell related vehicles and supporting products have formed a complete technology and product system. Recently, CRRC Electric has ordered 400 sets of hydrogen fuel cell system core components for a large Chinese car company. It is precisely a high-power fuel cell DC/DC converter developed based on wide-bandgap semiconductor (silicon carbide), which is also China’s first commercial application. SiC high-power fuel cell DC/DC converter.