Bill Dube via EV wrote:
I agree with Phil.
I also doubt that cell towers are the root cause of your issue.
I agree; cell phones operate at GHz frequencies, which is highly
unlikely to affect any EV electronics.
However, wherever they put cell towers, they may also put *other* radio
services. There's a city water tower near us, and it literally bristles
with dozens of radio antennas; police, fire, FM radio stations, etc.
They operate at lower frequencies and higher power levels, which *may*
get into your EV wiring.
The problem is likely due to the motor wiring and other power wiring not
kept separate/distant from the throttle wiring. The throttle wiring
needs to be a small, shielded, 3-wire cable, kept very distant from any
battery or motor cables.
Additionally, the motor cables need to be kept very close to one
another, and the battery cables need to travel in pairs that are also
kept close to one another. Every battery cable that emerges from a
battery module needs to be paired tightly with the opposite polarity
battery cable carrying the return current.
That's all good advice. When this can't be done (for instance the wiring
between cells inside a battery box), then the box itself should be
metal, or have some kind of shielding (even grounded aluminum foil will
work).
A portable AM radio is an easy way to "sniff" for RF noise. Tune the
radio between stations, and turn up the volume. If something is emitting
broadband RF noise, it's likely to interfere with AM radio.
Lee
--
Whatever the problem, be part of the solution. Don’t just sit
around raising questions and pointing out obstacles. -- Tina Fey
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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