Vehicle-to-Grid (V2G) is an idea to utilize stored electricity of Electric Vehicles (EV) in the connected grid to either balance power demand or provide emergent power. To this end, the power interface shall have bidirectional capability to charge or discharge the energy of the EV onboard battery. Existing onboard chargers integrated on EVs are mostly designed to implement unidirectional AC/DC conversion and charging regulation. This paper presents a bidirectional boost Power Factor Correction (PFC) converter based on an advanced bridgeless interleaved boost topology. The proposed converter can be an active front end of the bidirectional onboard charger for rectifying the grid AC power or taking the DC battery power back via the general boost PFC and a phase-shift controls, respectively. The simulations are performed to verify the proposed converter can achieve the bidirectional operations. Fewer existing boost PFC topologies exploited in EV battery chargers consider the bidirectional power conversions. This work moderately modifies a boost interleaved boost PFC topology to extend it to V2G application. The modification replaces the pre-charge and boost return diodes with four MOSFETs with parallel anti-diodes to become a full-bridge for switch control, which is entailed the additional control and gate drive circuitry. The charger can be rearranged as compact as unidirectional one. In addition, A hybrid scheme with generalized interleaved and phase-shift controls, respectively, for the boost PFC and DC/AC conversion is conceived. It is shown in the simulations that the proposed converter together with the designed controller can achieve the bidirectional power conversions for future V2G applications.


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    Titel :

    Bidirectional power factor correction converter control of an EV on-board charger for V2G application


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2012


    Format / Umfang :

    7 Seiten, 6 Bilder, 14 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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