This paper proposes a new concept for contactless electrical energy transmission system for an elevator and an automated guided vehicle. The system has rechargeable batteries on the car and electrical energy is supplied at a specific place. When electric power is supplied to the car, it runs automatically and approaches the battery charger. Therefore, a comparatively large gap is needed between the primary transformer at the battery charger and the secondary transformer on the car in order to prevent damage which would be caused by a collision. In this case, a drop of the transformer coupling rate due to the large gap must be prevented. In conventional contactless electrical energy transmission technology, since electric power is received by a pickup coil from a power line, a large-sized transformer is required. When the distance over which the car runs is long, the copper loss of the line also increases. The developed system adopts a high-frequency inverter using a soft switching method to miniaturize the transformer. The system has a coupling rate of 0.88 for a transformer gap length of 10 mm and can operate at 91 % efficiency.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A highly efficient contactless electrical energy transmission system


    Contributors:
    Ayano, H. (author) / Nagase, H. (author) / Inaba, H. (author)

    Published in:

    Publication date :

    2004


    Size :

    9 Seiten, 10 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    CONTACTLESS ELECTRICAL ENERGY TRANSMISSION SYSTEM FOR VEHICLE DOORS

    KROKHIN ANATOLII IVANOVICH / KROKHIN SERGEY BORISOVICH / MOROZOV NIKITA SERGEEVICH | European Patent Office | 2019

    Free access

    Contactless power transmission device, contactless power reception device, and contactless power transmission system

    KOIZUMI MASAYOSHI / OHASHI OSAMU / OTA TOMOHIRO et al. | European Patent Office | 2018

    Free access

    CONTACTLESS POWER TRANSMISSION DEVICE, CONTACTLESS POWER RECEPTION DEVICE, AND CONTACTLESS POWER TRANSMISSION SYSTEM

    KOIZUMI MASAYOSHI / OHASHI OSAMU / OTA TOMOHIRO et al. | European Patent Office | 2017

    Free access

    CONTACTLESS POWER TRANSMISSION SYSTEM, CONTACTLESS POWER SUPPLY SYSTEM, AND CONTACTLESS POWER SUPPLY METHOD

    NAKAYASHIKI YUSEI / TAKAHASHI MASAYA / YAMAGUCHI NOBUHISA et al. | European Patent Office | 2025

    Free access