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An Improved LCL-L Compensation Topology for Capacitive Power Transfer in Electric Vehicle Charging

IEEE access, 2020, Vol.8, p.27757-27768 [Peer Reviewed Journal]

Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2020 ;ISSN: 2169-3536 ;EISSN: 2169-3536 ;DOI: 10.1109/ACCESS.2020.2971961 ;CODEN: IAECCG

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  • Title:
    An Improved LCL-L Compensation Topology for Capacitive Power Transfer in Electric Vehicle Charging
  • Author: Vu, Van-Binh ; Dahidah, Mohamed ; Pickert, Volker ; Phan, Van-Tung
  • Subjects: Air gaps ; battery charger ; Capacitance ; Capacitive power transfer ; Capacitors ; Circuit design ; Compensation ; compensation circuits ; Couplers ; Coupling coefficients ; Couplings ; Electric vehicle charging ; electric vehicles ; LCL-L topology ; Misalignment ; Network topology ; Power generation ; Power transfer ; Topology
  • Is Part Of: IEEE access, 2020, Vol.8, p.27757-27768
  • Description: This paper proposes an LCL-L compensation circuit for high power capacitive power transfer (CPT) aiming at minimizing number of resonant components and improving system performance. The proposed topology adopts only four external resonant components at both sides of the capacitive coupler. The output power is proportional to the capacitive coupling coefficient, therefore, it simplifies the design procedure and abolishes protection circuit requirements under coupler's misalignment. Moreover, optimizing efficiency at full-load conditions of compensation network can be easily achieved in this system by designing resonant components at the highest value of the mutual capacitance. Theoretical analysis of the proposed system is conducted alongside comparison to lasted CPT compensation circuits. Simulation and experimental results of a 1.5-kW CPT prototype with an air gap distance of 150 mm are provided to verify the feasibility and the effectiveness of the proposed system. System performances under different coupler's misalignment conditions and output power levels are also examined and discussed as well.
  • Publisher: Piscataway: IEEE
  • Language: English
  • Identifier: ISSN: 2169-3536
    EISSN: 2169-3536
    DOI: 10.1109/ACCESS.2020.2971961
    CODEN: IAECCG
  • Source: IEEE Open Access Journals
    DOAJ Directory of Open Access Journals
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