Dynamic Modeling of Fuel Cell Air Management System and Impact Analysis of Motor Torque Ripple
2022-01-0840
03/29/2022
- Event
- Content
- Electric-driven centrifugal compressor is mostly used in the present fuel cell vehicles. In this paper, the mathematical model of centrifugal compressor performance is established, which can predict the performance of centrifugal compressors under various speeds precisely. Then, the dynamic model of the electric-driven centrifugal compressor system is presented considering rotor dynamics and motor model. Based on experiment results, the output performance of the fuel cell stack is modeled. Lastly, the impact of motor torque ripple on the performance of centrifugal compressor and fuel cell stack is analyzed through simulations. The result shows that torque ripple causes lower fluctuation of speed under high speed so that it has little effect on the output performance of the centrifugal compressor. Therefore, in the case of matching the operating conditions of the centrifugal compressor and the fuel cell stack, the low-speed operation time of the centrifugal compressor should be reduced. For the electric-driven centrifugal compressors, whose long-running operations are medium-high speed conditions, torque ripple is not the main consideration in the motor selection or design, and the switched reluctance motor is a good choice.
- Citation
- Chen, S., Zuo, S., Wu, Z., and Liu, C., "Dynamic Modeling of Fuel Cell Air Management System and Impact Analysis of Motor Torque Ripple," SAE Technical Paper 2022-01-0840, 2022, .