Vehicle-to-Grid AC Charging Station: An Approach for Smart Charging Development∗

The use of electric powered vehicles is increasing steadily. This also leads to new challenges for the power grid. An electric powered vehicle provides heavy stress for the grid, especially when many vehicles are loading their accumulators simultaneously. To counteract these negative effects, smart charging is developed. With intelligent vehicle-to-grid communication, the stress for the grid, during the charging process, can be reduced. This is especially important when renewable energy sources are utilized. Using new software protocols and suiting hardware applications, smart charging can harmonize the needs of renewable energy sources and electro mobility. In this paper a smart charging capable AC charging station for hardware and software evaluation is proposed. This system is based on OCPP 2.0 and the ISO 15118 standard.