Load Torque Component Extraction and Analysis of Ultra-High-Speed Electric Air Compressors for Fuel Cell Vehicles

Author:

Zhou Jiaming1ORCID,Shu Xing2ORCID,Zhang Jinming1ORCID,Yi Fengyan2ORCID,Hu Donghai3ORCID,Zhang Caizhi4,Li Yanzhao1ORCID

Affiliation:

1. School of Intelligent Manufacturing, Weifang University of Science and Technology, Weifang 262700, China

2. School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China

3. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China

4. College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China

Abstract

An ultra-high-speed electric air compressor (UHSEAC) generates a load torque component during operation, leading to unstable output. As air passes through the UHSEAC, the air density changes significantly, resulting in increased uneven distribution. This causes rapid changes in gas parameters, making them difficult to extract. Consequently, the behavior of load torque component variations under ultra-high-speed operating conditions (UHSOC) remains unclear. The influence of UHSOC on the load torque component has not been studied. In this article, the fluid model of the UHSEAC is established and verified, and the load torque component is extracted based on this model. The influence of speed and torque on the load torque component under UHSOC is then studied. The results show that the frequency of the load torque component increases by 14.29% as the speed increases from 70,000 rpm to 90,000 rpm. Additionally, as the torque increases from 1.3 Nm to 1.7 Nm, the amplitude of the load torque component increases by 69.56%. These findings provide valuable guidance for future scholars seeking to optimize UHSEAC design to reduce load torque components.

Publisher

MDPI AG

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