由于氢燃料电池电堆对进气系统无油、高压比、大流量的技术特性要求，开发无油高效的氢燃料电池空压机系统正变得越来越重要，超高速无油空压机系统可以为电堆高效地提供洁净的压缩空气，成为了燃料电池系统实现高功率密度、高效率的关键核心部件。超高速无油空压机系统关键技术包括超高速永磁同步电机电磁设计、超高速转子过盈量分析、超高速永磁同步电机热分析、无油动压气浮轴承技术等。分别对以上无油空压机系统关键技术进行深入研究，并结合某款150 kW电堆流量需求，设计了额定功率25 kW的超高速无油空压机系统，并完成了样机试制，之后对空压机系统进行了相关试验验证。试验结果表明，空压机系统能持续稳定运行，性能达成了各项设计目标，空压机系统各关键技术得到验证。

Due to the technical requirements of oil-free, high-pressure ratio, and high flow rate for the intake system of hydrogen fuel cell stacks, the development of oil-free and efficient hydrogen fuel cell air compressor systems is becoming increasingly important. The ultra-high speed oil-free air compressor system can efficiently provide clean air flow for the stack, therefore becoming a key core component for fuel cell systems to achieve high power density and efficiency. The key technologies of the ultra-high speed oil-free air compressor system include electromagnetic design of ultra-high speed permanent magnet synchronous motor, analysis of ultra-high speed rotor interference, thermal analysis of ultra-high speed permanent magnet synchronous motor, and oil-free dynamic compressed air floating bearing technology. The in-depth research on the key technologies of the oil-free air compressor system mentioned above was conducted, and an ultra-high speed oil-free air compressor system with a rated power of 25 kW level was designed and the prototype trial production was completed based on the flow demand of a certain 150 kW level fuel cell stack. Afterwards, relevant tests and verifications were conducted on the air compressor system. The test results show that the performance of the air compressor system has achieved various design goals and can continue to operate stably. The key technologies of air compressor system have been verified.