Implementation of grid-friendly charging scheme to electric vehicle off-board charger for V2G

Integrating large-scale renewable energy sources and electric vehicles into the power grid, Smart Charging and Vehicle-to-Grid of the electric vehicles play an important role for supply and demand matching in the power grid. Many control schemes have been proposed, and implementation of the smart charging and V2G to the electric vehicle charger is also an important issue. This paper proposes an off-board charger that realizes seamless charge and discharge control via the DC connector on the existing electric vehicle. A grid-friendly charging scheme is implemented to the V2G test system consisting of the off-board charger, an electric vehicle battery test-bed, and a smart interface controller with flexibility in software installation. Communication and control functions of each component are confirmed through fundamental experiments. A load frequency control function for the real-time digital power system simulator is tested on the proposed V2G test system.

[1]  Filipe Joel Soares,et al.  Integration of Electric Vehicles in the Electric Power System , 2011, Proceedings of the IEEE.

[2]  Willett Kempton,et al.  A Test of Vehicle-to-Grid (V2G) for Energy Storage and Frequency Regulation in the PJM , 2009 .

[3]  Stephan Koch,et al.  Provision of Load Frequency Control by PHEVs, Controllable Loads, and a Cogeneration Unit , 2011, IEEE Transactions on Industrial Electronics.

[4]  Akihiko Yokoyama,et al.  Autonomous Distributed V2G (Vehicle-to-Grid) Satisfying Scheduled Charging , 2012, IEEE Transactions on Smart Grid.

[5]  D. Manz,et al.  The case for open-source PEV charge management data framework , 2012, 2012 IEEE International Electric Vehicle Conference.

[6]  Akihiko Yokoyama,et al.  A new Load Frequency Control method in power system using Vehicle-to-Grid system considering users' convenience , 2011 .

[7]  K. Strunz,et al.  Modeling of an electric vehicle charging station for fast DC charging , 2012, 2012 IEEE International Electric Vehicle Conference.

[8]  H. Yano,et al.  Balancing power supply-demand by controlled charging of numerous electric vehicles , 2012, 2012 IEEE International Electric Vehicle Conference.

[9]  Alec Brooks,et al.  Demand Dispatch , 2010, IEEE Power and Energy Magazine.

[10]  Chresten Træholt,et al.  Electric vehicle requirements for operation in smart grids , 2011, 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies.