Investigation and Development of Energy Efficient EV Chargers

Abstract

Technology advancements and concerns about greenhouse gas emissions will make electric vehicles the preferred mode of transportation in the future. The goal of this research is to resolve the current power grid issues of harmonics and low power factor. Rectifiers are primarily used in electric vehicles to convert AC power to DC power. A popular feature of SPWM rectifiers is that they produce high output voltage, unity power factor, and excellent dynamic response with low input current distortions. Closed-loop DC-DC converters and single-phase SPWM rectifiers convert direct current from one voltage to another. This method can balance the DC link to maintain a unity power factor and account for reactive power. With the proposed technology, individual rectifiers will be reliable and effective, and electric vehicle grids will be stable. The EU's energy paradigm has undergone considerable changes. To achieve the gradual shift toward electric vehicles and renewable energy, the EU climate commitment 2050 sets a reduction target of 80 to 95 percent. The requirements for Flexibility may vary from source to load due to the advancement of demand-side resource and storage technologies. A future grid with intermittent and uncontrollable wind and solar power generation presents problems. To maximize the integration of renewable resources and electric vehicles and to enhance renewable energy penetration, a novel grid technique is proposed and analyzed in this study. The charging and discharging strategy is managed by a distribution control system employing V2G technology to provide a mismatch between charging and renewable generation. To fulfill demand, avoid peak hours, and provide auxiliary services, it is necessary to maintain consistent frequency, smooth load configuration, and stable power quality.