Wireless Power Transfer to Electric Vehicles on Public Roadways

Mitch Buchman KB3MYC at arrl.net
Mon Feb 7 06:43:02 EST 2022


Does anyone have any pointers to information on the potential for amateur
radio spectrum impact of wireless charging of electric vehicles while
operating on public roads?

This article includes a photo of one company's under-road coils:
https://www.prnewswire.com/news-releases/electreon-presents-worlds-first-dynamic-wireless-charging-of-a-long-haul-electric-truck-while-driving-on-a-public-road-301214281.html

It doesn't seem to simply be magnets under the roadway, with coils under
the car to generate a current, which would actually cause the vehicle to
work to move through the fields. They also seem to be able to transfer
power to the vehicle when the vehicle is not moving. The existing systems
seem to be using magnetic induction, but companies seem to be exploring
electric field induction as well. We know that the primary power transfer
may be magnetic or electric, by design, but neither one can come without
bringing along the other, in what these companies would see as
inefficiencies, or power loss, but we would see as interference.

Just curious if anyone is looking at the potential spectrum implications of
potential pervasive deployment of technology which could be the key to
acceptance of electric vehicles. While BPL had marginal political support,
technology that could foster electric vehicle acceptance would likely have
massive commercial and political support. What are the unintended
consequences?

Mitch Buchman
KB3MYC
kb3myc at arrl.net
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