Analysis and Design of an EV/PHEV Bidirectional Charger for Advanced Grid Support


More battery powered electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) will be introduced to the market in 2011 and beyond.  Since these vehicles have large batteries that need to be charged from an external power source or directly from the grid, their batteries, charging circuits, charging stations/infrastructures, and grid interconnection issues are garnering more attention.

PHEV chargers are of critical importance to strengthen the interaction between the grid and the vehicle in an appropriate way so that neither vehicle nor grid is harmed in the short and long term. A simple unidirectional charger is enough to charge a vehicle battery with suitable voltage and current waveforms. In contrast, an advanced charger is capable of performing several functions whenever connected to the grid to make the grid integration beneficial to the utility and to the owner of the vehicle. In this project, we propose to simulate, design, and demonstrate various operation modes of an advanced bidirectional battery charger (BBC).

Project Highlights

  • Li-ion battery pack model is developed.
  • The effects of bidirectional power transfer on dc link capacitor and PHEV battery is analyzed.
  • Modeling and simulation is done.
  • Control system setup and implementation is under progress.
  • Hardware configuration is under progress.


M. C. Kisacikoglu, B. Ozpineci, and L. M. Tolbert, "Examination of a PHEV bidirectional charger for V2G reactive power compensation," IEEE Applied Power Electronics Conference and Exposition, Palm Springs, CA, 2010.

M. C. Kisacikoglu, B. Ozpineci, and L. M. Tolbert, "Effects of V2G Reactive Power Compensation on the Component Selection in an EV or PHEV Bidirectional Charger," IEEE Energy Conversion and Congress Exposition, Atlanta, GA, 2010.

PHEV Charger Assesment Report is currently being prepared.



Burak Ozpineci, Leon M. Tolbert, and Mithat Kisacikoglu



Burak Ozpineci