Grid-Connected Inverter For High Power On Board Charger For Electric Vehicle

The popularity of EVs has increased over the last decade due to concerns about climate change and consuming fossil fuel resources.The early development of EVs provides significant possibilities to utilize more clean energies for automobiles.One of the most important elements of EVs is the charging system that has been the focus of recent research interest in terms of the vehicle to grid power transfer to provide peak load leveling for the Grid.Furthermore,for EVs,the possibilities of delivering power back to the Grid have raised the interest in bidirectional power flow solutions.Therefore,an uncoordinated charging of a huge number of EVs can negatively impact the electrical grid operation in terms of power outages,voltage fluctuations,harmonics pollution,etc.But the increasing problem of climate change-related to high oil prices is raising the interest and research on EVs.Many different kinds of EVs are being developed and promoted,such as fuel cell vehicles,the battery EV,or plug-in hybrid(electric motor with on-board battery and a traditional internal combustion engine).The EV charging system can be categorized into off-board,and on-board types with unidirectional or bidirectional power flow: 1)a unidirectional charging limits hardware requirement and simplifies interconnection issues: 2)a bidirectional charging supports battery energy injection back to the Grid.This research goal is to develop a double stage 6.6kw On Board Charger for EV.Thus,it is essential the on-board charger topology which could help to develop on board charger technology.However,this research focuses on "Grid-connected Inverter for the high voltage battery on board charger".For achieving our goal to develop two-stage topologies 6.6kw on board charging station,we’ll use the on-board charger topology consists of an interleaved boost PFC(Power-Factor Correction)converter and isolated LCC resonant DC-DC converter,Boost Current Loop Design,LCC Converter Current Loop Design,Voltage Loop Design and Over Current Protection technique.The Simulink has been done by using MATLAB and Hardware design has shown and implementation can be done in future work.