A System and Method for Reducing Torque Ripples in Electric Vehicles In an electric vehicle (10), the system includes a traction motor (250), a motor controller (200), a machine learning (SML) unit (320) and an excitation unit (340). The motor controller (200) is configured to determine a set of first rotor values (d1, q1) that includes a first magnetic flux value (id1) and a first rotor angle value (iq1). The machine learning unit (320) includes a ripple identification table (322) including a set of second rotor values for which torque ripple does not occur. The machine learning unit (320) is configured for predicting at least one time instant when a torque ripple will occur based upon a comparison between the set of first and second rotor values in the ripple identification table (322). The excitation unit (340) is configured for performing excitation at the at least one predicted time instant based upon a throttle demand and the comparison.


    Access

    Download


    Export, share and cite



    Title :

    A SYSTEM AND METHOD FOR REDUCING TORQUE RIPPLES IN ELECTRIC VEHICLES


    Additional title:

    SYSTEM UND VERFAHREN ZUR REDUZIERUNG VON DREHMOMENTSCHWANKUNGEN IN ELEKTROFAHRZEUGEN
    SYSTÈME ET PROCÉDÉ DE RÉDUCTION D'ONDULATION DE COUPLE DANS DES VÉHICULES ÉLECTRIQUES



    Publication date :

    2024-05-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



    New methods for reducing the cogging torque and torque ripples of PMSM

    Dajaku, Gurakuq / Gerling, Dieter | IEEE | 2014


    A METHOD FOR REDUCING TORQUE RIPPLES IN A TRACTION MOTOR AND A SYSTEM THEREOF

    SENTHIL THIRUNAVUKKARASU / SREENIVASAN BALAJI / SAGARE DATTA RAJARAM et al. | European Patent Office | 2024

    Free access

    Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

    Zahraoui, Yassine / Akherraz, Mohamed / Fahassa, Chaymae et al. | BASE | 2022

    Free access

    Torque Ripples in Electric Vehicle Drive Quality in Open and Closed Loop Control Environments

    Hong, Hyung-Joo / Morris, Robert / Xing, Xing | SAE Technical Papers | 2021


    Torque Ripples in Electric Vehicle Drive Quality in Open and Closed Loop Control Environments

    Hong, Hyung-Joo / Xing, Xing / Morris, Robert | British Library Conference Proceedings | 2021