Abstract
Energy storage plays a fundamental role in balancing the power fluctuations induced by the distributed generation of renewable energy sources. In this scenario, electric vehicles can strongly contribute to exchange power with the grid through their on-board batteries. When the vehicle is parked, the battery can be discharged, injecting active power into the grid, provided that its state of charge will be restored before vehicle utilization. This paper presents a comprehensive step-by-step design of a wireless charger for a Vehicle-to-Home application. The design procedure begins from the constraints disposed by the Italian reference technical rules for Low Voltage utilities and by the standard SAE J2954 for Wireless Power Transfer for electric vehicles. The selection of the output power of the battery is followed by the power sizing of each stage of the bidirectional wireless charger.
Highlights
The perpetual increase in electrical energy demand by industry and domestic uses is one of the major concerns for climate change on Earth
This paper presents a comprehensive step-by-step design procedure for a bidirectional wireless system for V2H (BWV2H), giving a handy instrument for its design, which can be utilized for higher power Wireless Power Transfer (WPT) systems
The reactive elements for the WPT are sized, including the capacitors of the compensation networks, on the basis of the mutual inductance between the two coils required to transfer the active power defined in previous steps
Summary
EVs are expected to break the market in coming years, despite some issues that still surround them, mostly related to the battery [1,2], The energy required to recharge a large fleet of EVs is another key point that involves grid stability. In addition to these issues, conventional wired charging presents electric shock risk related to wet conditions, making it unsafe for public use during plug-in or plug-out before and after charging
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