Wireless charging for Google’s self-driving cars

US FCC documents suggest that Google is working on wirelessly charging its self-driving cars, the IEEE Spectrum reported.

According to the documents, Google has been testing two wireless charging systems on its prototype autonomous vehicles in California.

Start-up Hevo Power installed an experimental charger at Google’s headquarters in California in February 2015, stated the report.

A second company, Momentum Dynamics, installed a wireless charger in July.

Spectrum reported that both systems transfer power using a principle called resonant magnetic induction.

The Hevo charger can deliver 1.5kW of power from a circular transmitter embedded in the ground – “like a manhole cover”.

Momentum Dynamics claims to have developed a transmitter with power ratings of up to 200kW, though the FCC filings did not disclose the specifications of the charger installed at Google.

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Wireless charging for Google’s self-driving cars