TJ Simpson at Solar Edge tells me the new optimizers use spread spectrum
modulation to reduce the 200 kHz interference that I am experiencing. In
January, he is coming to install those next door. The wiring has already been
rerouted and ferrites installed on a previous service call, but that didn’t
reduce the 200 kHz carrier amplitudes here. So we’ll see what the new
optimizers do. Thankfully the system is otherwise very quiet. I did a careful
walk-around with my DFing gear and indeed the main inverter is very quiet. Only
the carriers from their optimizer telemetry cause me any problems.
I must commend SolarEdge on their ongoing interest in solving my RFI issues.
They are not super fast, but they work is getting done and I have a
knowledgeable human being to work with. No lawyers required.
Gary Johnson NA6O
> On Dec 22, 2019, at 3:21 PM, firstname.lastname@example.org wrote:
> Actually, yes, they are changing their designs. These field retrofits are
> expensive. The Lab's W1VLF was on the list to get his own home system
> upgraded and they replaced the inverter, the optimizers, added ferrites and
> did twisted pairs to the panels, not a big loop.
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