Re: [Elecraft] OT - Photovoltaic (PV) Systems

[Bernie Gardner]

I put pretty much this system on our house a couple of years ago: 4400 
watts from 20 220 Watt panels with Enphase micro-iinverters.  I tend to 
have local noise anyway, but after the system was functioning I tuned to 
an otherwise quiet band and pulled the switch on the photovoltaics.  I 
could here no difference in noise.  My shack is on the second floor with 
only a few feet or less of attic between me and the panels.  I've never 
observed any problems from rfi getting into the photovoltaic system.  
Note that I don't run more than ~100 Watts, so I can't speak to what 
might happen with a full legal limit amp.

The system has worked out very well.  We made about 85% of our total 
electric use the first year, though with the heat this summer I'm afraid 
that number will drop from air conditioner use...

Bernie
W1AZ

On 7/19/2012 8:35 AM, Monty Shultes wrote:
 We're considering a 4KW PV system to save energy costs.  If you have not read 
 Bob Bruninga's August, 2012, QST article Rethinking Electric Power… it is 
 recommended.

 Does anyone here have experience with solar panel/inverter systems (no 
 batteries, selling power back to utility) regarding interference?  Either 
 receive interference from the PV system, or RF getting into the PV system and 
 causing issues.

 The most likely configuration for our system will be micro inverters 
 attached to each of 16 60-cell solar panels.  This minimizes I^2R losses and 
 is extensible.

 Thanks for all replies, on or offline.

 Monty K2DLJ
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] OT - Photovoltaic (PV) Systems

[T Gahagan]

Hi Monty,

We installed a PV system consisting of 18 240 watt panels in December of 
2011.  I'm using an inverter and feeding the grid and am currently about 200 
KW/hrs ahead of usage.  I experience no RF coming from the system and the RF 
I generate (1 KW on HF) doesn't seem to bother the system. All lines are 
underground or in metal conduit and our array sets about 200 feet from the 
house.  We are very pleased and have had no power bills since March of 2012. 
We have a lot of very sunny days here in South Central Montana.

Todd, WA7U

-Original Message- 
From: Monty Shultes
Sent: Thursday, July 19, 2012 6:35 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] OT - Photovoltaic (PV) Systems

We're considering a 4KW PV system to save energy costs.  If you have not 
read Bob Bruninga's August, 2012, QST article Rethinking Electric Power… 
it is recommended.

Does anyone here have experience with solar panel/inverter systems (no 
batteries, selling power back to utility) regarding interference?  Either 
receive interference from the PV system, or RF getting into the PV system 
and causing issues.

The most likely configuration for our system will be micro inverters 
attached to each of 16 60-cell solar panels.  This minimizes I^2R losses and 
is extensible.

Thanks for all replies, on or offline.

Monty K2DLJ
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html