Noise and Vibration (NVH) characteristic of an electric machine (e-Machine) is the outcome of complex interaction between source level disturbances and the surrounding structure to which the e-Machine is attached. Key e-Machine metrics that objectively quantify source level disturbance include torque ripple and radial electro-magnetic forces. These disturbances can radiate directly from the e-Machine housing (air-borne component) and also can be transmitted through the structural attachments like stator bolts, stator ring, powertrain mounts etc. (structure-borne component). In the e-machine driven by PWM switching inverter, current is not perfectly sinusoidal but contain different level of harmonics. Current harmonics impact Torque ripple, which in turn would translate into undesirable noise and vibration. There is very limited literature referencing the influence of current harmonics on torque ripple and e-machine NVH. This paper specifically addresses the impact of current harmonics on the 6th and 12th electrical orders of the torque ripple and relevant e-Machine whine noise employing statistical correlation & regression analysis based on the data sets acquired from dynamometer testing and finite element based CAE calculations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Current Harmonics, Torque Ripple and Whine Noise of Electric Machine in Electrified Vehicle Applications


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX™ 17: SAE World Congress Experience ; 2017



    Publication date :

    2017-03-28




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Current Harmonics, Torque Ripple and Whine Noise of Electric Machine in Electrified Vehicle Applications

    Chandrasekhar, Nurani / Tang, Chun / Limsuwan, Natee et al. | British Library Conference Proceedings | 2017


    Current Harmonics Impact on Torque Ripple in PM Machine Drive System

    Tang, Chun / Limsuwan, Natee / Chandrasekhar, Nurani et al. | British Library Conference Proceedings | 2017


    Current Harmonics Impact on Torque Ripple in PM Machine Drive System

    Tang, Chun / Krizan, Jacob / Hetrick, Joel et al. | SAE Technical Papers | 2017


    Engine timing system whine noise

    de Souza, Alexandre Barcelos / Prada, Arley Thomas / Glyniadakis, Georges Vretos et al. | SAE Technical Papers | 2007


    Engine timing system whine noise

    Glyniadakis, G.V. / Rodruigues, M.C. / de Souza, A.B. et al. | British Library Conference Proceedings | 2007