[Elecraft] OT: RF noise in solar photovoltaic system

[Jim Brown]

You're moving in the right direction, Alan. Study the QST article to 
learn as much as possible about the concepts. Remember that RF is 
radiated by CURRENT flowing on conductors that are not shielded, and 
that differential current on a transmission line is not radiated. 
Twisting helps that tremendously.

Study my RFI piece. I'd be happy to chat if you want to work through 
some ideas and concepts. Yes, inverters integral to panels can minimize 
RFI IF the units are properly designed, but that can be a very big if. 
:)  Also, buy Henry Ott's excellent EMC text and study it. Published by 
Wiley, you want the latest edition (c.a. 2007-8).

73, Jim K9YC



On Mon,7/18/2016 7:32 PM, Alan Bloom wrote:
> I am now leaning on going with a local company rather than Solar City. 
> They quoted a higher price for a lower-power system, but because of 
> some convoluted accounting it will actually end up costing me less.  
> And they are at least willing to talk about adding some common-mode 
> chokes. Their system uses micro-inverters on each panel, which 
> potentially should cause less interference because all the switching  
> electronics is localized with short connections.  Only 240 VAC 60 Hz 
> comes out of the panels.