This paper presents a mathematical model of an electric driveline consisting of one battery pack, two independent Permanent Magnet DC (PMDC) motors and motor-controllers and two fixed-ratio planetary gearboxes, all located inside the rear frame of the vehicle.The proposed analysis has been performed with the objective of: (i) Determination of acceleration run time for a straight patch of 75 meters; (ii) Determination of lap times and energy consumption for endurance track of 23 laps. A model of a PMDC motor and motor controller has been developed based on response analysis by conducting experiments on a jig setup. The motor controllers are compared for two control modes- Speed mode and Torque mode. A simplified race car model for longitudinal vehicle dynamics is derived from forces acting on the car including the effect of losses due to drag forces, rolling resistance, transmission inefficiency and inertial losses due to rotary elements. The effect of reduction ratio on acceleration run times and endurance lap times and energy consumption is compared and an optimum gear ratio is finalized considering acceleration performance and mass and inertia of resulting gearbox. An estimate of maximum energy utilized during the endurance run is obtained based on motor current profile and speed-torque characteristics, and the battery pack size and configuration is decided accordingly. The cells for the battery pack have been selected after extensive market research based on constraints like energy requirement, weight and maintenance cost.This concludes the entire mathematical model for the driveline of the vehicle pertaining to the most optimized performance.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Powertrain Model for Selection of Reduction Ratio and Estimation of Energy Requirement


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2014 World Congress & Exhibition ; 2014



    Erscheinungsdatum :

    2014-04-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Design of Powertrain of Electric Vehicle with Requirement of Performance Indexes

    Li, Jun Wei ;Chen, Jing ;Wang, Yu Hai | Trans Tech Publications | 2012


    Powertrain Efficiency Through Friction Reduction

    Dipl.-Ing. Beulshausen, Johannes / Dipl.-Ing. Geiger, Johannes / Prof. Dr.-Ing. Pischinger, Stefan et al. | Springer Verlag | 2014


    Transmission Ratio Optimization of Electric Vehicle Powertrain

    Wang, Yu-Ming / Du, Chang-Qing / Li, Xia-Nan et al. | Tema Archiv | 2013


    NARMAX Structure Selection for Powertrain Control

    Triantos, G. / Shenton, A. T. / International Federation of Automatic Control | British Library Conference Proceedings | 2005


    Driving the powertrain towards CO2 reduction

    Pleus,P. / Reik,W. / Kelm,P. et al. | Kraftfahrwesen | 2008