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Delphi Automotive has equipped several test vehicles with its Wireless Charging System, a highly efficient wireless energy transfer system featuring technology developed by WiTricity Corporation. Delphi will display the technology here at this year's IAA International Motor Show. "This system represents a significant advancement in our research and development efforts to offer automotive manufacturers a practical wireless charging solution we believe is superior to others being proposed," said Randy Sumner, director, global hybrid vehicle development, Delphi Packard Electrical/Electronic Architecture. According to Sumner, engineers have installed the Delphi Wireless Charging System on multiple test vehicles, and have confirmed that system performance meets automotive market requirements. In addition to added convenience, a wireless charging system eliminates the need for a charging cord. Drivers can simply park their electric vehicle over a wireless energy source situated...

Audi have introduced Audi Wireless Charging (AWC), contactless induction charging, at the Frankfurt Auto Show. The infrastructure side, comprising a coil and an inverter (AC/AC converter), is placed on a normal parking spot and connected to the power grid. The 3.6 kW primary coil set into the plate generates a high-frequency alternating field. The charging process begins automatically when the EV drives onto the plate. The alternating magnetic field of the infrastructure side induces an alternating current across the air gap in the secondary coil, which is integrated into the vehicle. This current is rectified and fed into the vehicle’s electrical system, where it charges the battery or powers consumers such as the heater. The alternating field is only generated if the vehicle is standing over the plate and thus poses no danger to people or animals. Charging stops automatically when the battery is fully charged. The driver can interrupt charging at any time. The efficiency of AWC is co...