• Login
    View Item 
    •   Home
    • Graduate Theses, Dissertations and Projects
    • Queen's Graduate Theses and Dissertations
    • View Item
    •   Home
    • Graduate Theses, Dissertations and Projects
    • Queen's Graduate Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Control Techniques for a Single-Phase Bi-Directional Full-Bridge Active Rectifier for Vehicle-to-Grid and Grid-to-Vehicle Applications

    Thumbnail
    View/Open
    Akel_Nabil_201407_MASC.pdf (10.03Mb)
    Date
    2014-07-04
    Author
    Akel, Nabil
    Metadata
    Show full item record
    Abstract
    As electric vehicles (EV) continue to gain market traction, more research is being conducted in the control of the power conditioning system. This thesis focuses on control strategies for the front-end AC/DC converter. Current EV chargers in the market are unidirectional which limits the opportunity for EV owners to participate in vehicle –to-grid services. The core work on this thesis is two bi-directionally capable controllers for EV chargers that have improved performance or added functionality over the traditional chargers on the market. The controllers were simulated and implemented on a single-phase full bridge converter.

    The first controller focuses on improving the dynamic performance of EV chargers compared to the conventional linearly regulated chargers. This nonlinear controller is designed based on Lyapunov control theory which guarantees that the energy of the system is always decreasing thereby guaranteeing stability. A better version of this controller is designed by adding integral terms into the system. These terms compensate for parameter variations and converter model inaccuracies. Finally, a practical version of the controller is implemented by using the Tikhonov theorem to decouple the fast current loop and the slow voltage loop of the system.

    The second part of the thesis focuses on the design of a controller which allows for four quadrant operation of the AC/DC converter by directly controlling the active and reactive power. This will allow EV owners to participate in ancillary services such as voltage control of the grid. This has potential to generate additional revenue for the owners and can also benefit the utility operators. This controller was designed in the synchronous frame using the Alpha-Beta to DQ transformation. In order to design this controller, an orthogonal version of the system had to be created. Several methods of orthogonal signal generation were compared and the one most suitable for this application was used.

    The result of this work is two controllers for EV chargers that tackle current challenges that exist in EV chargers. These controllers were simulated in PSIM and experimentally verified on a 1kW single phase full-bridge active rectifier.
    URI for this record
    http://hdl.handle.net/1974/12267
    Collections
    • Queen's Graduate Theses and Dissertations
    • Department of Electrical and Computer Engineering Graduate Theses
    Request an alternative format
    If you require this document in an alternate, accessible format, please contact the Queen's Adaptive Technology Centre

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us
    Theme by 
    Atmire NV
     

     

    Browse

    All of QSpaceCommunities & CollectionsPublished DatesAuthorsTitlesSubjectsTypesThis CollectionPublished DatesAuthorsTitlesSubjectsTypes

    My Account

    LoginRegister

    Statistics

    View Usage StatisticsView Google Analytics Statistics

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us
    Theme by 
    Atmire NV