A trolley assist-capable electric drive truck (20) includes a DC link (40) with first, second and third contactors (41, 42, 43) that may be opened and closed in different configurations to operate the truck in different modes. In a normal propel mode, the three contactors are open and electrical power is routed from an onboard electrical power source (23) to electric propulsion motors (26). During normal retard mode, the three contactors are closed to route electrical energy generated by the electric propulsion motors (26) through a grid resistor (56) of the DC link (40). In a trolley mode, the first and second contactors (42) are closed, but the third contactor (43) is open, and electrical power is routed from the trolley lines (11, 13) to the motors for propulsion, or in a reverse direction for retarding the truck.


    Access

    Download


    Export, share and cite



    Title :

    Simplified topology for trolley assist-capable electric drive truck


    Contributors:
    QIAN LEWEI (author)

    Publication date :

    2015-04-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Trolley Assist for Electric Drive Trucks

    Crawford, R. D. / SAE | British Library Conference Proceedings | 1995


    Trolley Assist for Electric Drive Trucks

    Crawford, Ronald D. | SAE Technical Papers | 1995


    DRIVE UNIT FOR ELECTRIC ASSIST TRUCK

    ASAI YOSHIHARU | European Patent Office | 2021

    Free access

    TROLLEY DRIVE SYSTEM AND ELECTRIC TROLLEY

    YOKOI SHUHEI / SATO HITOSHI / HIROSE YUTAKA | European Patent Office | 2024

    Free access

    Trolley Assist

    BURGES ANDRE | European Patent Office | 2015

    Free access