As the key assembly of new energy vehicles, the noise and vibration, and harshness (NVH) performance of integrated electric drive system directly affects the driving quality of new energy vehicles. In this paper, the vibration noise characteristic test of 3in1 electric drive system is carried out in the semi-muffler chamber. In order to compare and analyze the difference between 2in1 and 3in1 electric drive system NVH performance, the power electronics unit (PEU) in the 3in1 system was removed and placed on the ground away from the platform, and vibration noise test was carried out. In order to analyze the difference of NVH performance between 2in1 status and 3in1 status, the PEU in the 3in1 system was removed and placed on the ground far away from the bench, and the NVH test was carried out. The microphone signal at 1m position and the vibration acceleration signal of the key structural surface of the system are measured experimentally. The research results show that the addition of PEU enables the 3in1 electric drive system to generate new resonance frequencies at 350Hz, 570Hz, 1120Hz. At the same time, the integration of PEU improves the noise of the 3in1 electric drive system at the resonance frequency caused by the sub-frame at 50Hz, and improves the noise at the resonance band caused by the motor cover near 2350Hz. Compared with the 2in1 electric drive system, the noise of the 3in1 electric drive system with PEU is greater than that of the 2in1 electric drive system in the main order, and the A-weighted sound pressure level of the noise of the 3in1 electric drive system increased by up to 17-20 dB at 500-2000rpm and 7-10 dB at 10000-13000rpm.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    NVH Comparative Analysis of 3in1 and 2in1 Electric Drive System Based on Experimental Research


    Additional title:

    Sae Technical Papers


    Contributors:
    Meng, Dejian (author) / Su, Hui (author) / Xu, Jie (author) / Zhang, Lijun (author)

    Conference:

    WCX SAE World Congress Experience ; 2022



    Publication date :

    2022-03-29




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    NVH Comparative Analysis of 3in1 and 2in1 Electric Drive System Based on Experimental Research

    Su, Hui / Zhang, Lijun / Meng, Dejian et al. | British Library Conference Proceedings | 2022


    Comparative technical and economical analysis of lathe electric drive

    Zel'Tsburg, L.M. / Dianov, E.A. | Engineering Index Backfile | 1969


    Generalised Methodics of Comparative Energetic Analysis of Hybrid Electric Drive

    Szumanowski, A. | British Library Conference Proceedings | 1996