[RFI] Wireless Power Transfer with electric vehicles

[James Gordon Beattie Jr]

Ed,
The bottom line question will be whether in a housing sibdivision with homes  with two EV chargers each, can they peacefully coexist with low profile HF/VHF/UHF antennas in attics, around gutters and on flag poles?

The pressures of domestic electronics technology and HOAs and deed/convenant-restricted communities are at crossed purposes with respect to Amateur Radio.

73,
Gordon Beattie, W2TTT
201.314.6964

Get Outlook for Android<https://aka.ms/ghei36>

________________________________
From: RFI <rfi-bounces+w2ttt=att.net at contesting.com> on behalf of Hare, Ed, W1RFI <w1rfi at arrl.org>
Sent: Saturday, April 10, 2021 3:21:20 PM
To: jim at audiosystemsgroup.com <jim at audiosystemsgroup.com>; rfi at contesting.com <rfi at contesting.com>
Subject: [RFI] Wireless Power Transfer with electric vehicles

Oh, it's worse than the little Qi chargers, Jim.  We are talking 20kW chargers for electric vehicles and ARRL and IARU are very concerned about harmonics and inverter noise.  Right now, they are using magnetic loops, which are resonant, but also need filtering,, which at the 20 kW level Is not trivial.  The key is to get the right limits set.  ARRL has been helping to revise a few industry position papers, and although we don't always see eye to eye, we are making a difference and, more important, planning ongoing work.  Much like BPL, the goal is not to stop technology, but to help identify proper EMC solutions. With BPL, HomePlug  did it and HomePlug devices deployed successfully by the millions.

Today, I am in the Lab, gathering the wiring and adapters I need to finish the installation of  1.5m loop and active whip on a trailer to tow behind my van, to get away from vehicle noise. I am headed out to two large solar farms in Connecticut, just to get a feel for the EMI that may be present near them locally.

I get to have all this fun on weekends sometimes, too!

-----Original Message-----
From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com> On Behalf Of Jim Brown
Sent: Saturday, April 10, 2021 3:14 PM
To: rfi at contesting.com
Subject: Re: [RFI] Ed Hare W1RFI Contact Info?

On 4/10/2021 11:58 AM, Hare, Ed, W1RFI wrote:
> I have three major issues come up with wireless power transfer,

Great to hear that you're engaged on this, Ed. My RFI alarm went off years ago when I heard the first rumblings about this for use in charging widely used consumer devices.

73, Jim K9YC
_______________________________________________
RFI mailing list
RFI at contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI at contesting.com
http://lists.contesting.com/mailman/listinfo/rfi