Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters now for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
General findings have beeen that panels with "mini-inverters" on the panels themselves are very quiet. Panels with "optimizers" or DC-DC converters on each panel and a main inverter on the side of the house are very noisy! I specifically asked for the mini inverters and mine are quiet, but I can hear my neighbors system several hundred feet away with his "optimizers." You can get a bag of ferrites and clamp them on every panel's output and it will drastically quiet them down.
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Lussier Sent: Monday, February 11, 2019 7:48 AM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters now for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
Greg, My system is two SMA inverters with 48 panels combined between them. I can only say that my system has never caused any noise issues. My panels are pole mounted in the far end of a field to optimize the sun. Each pole has a dual axis tracker that are powered by a 5th pole with stationary panels looking south to power the trackers.
The SMA inverters are back at the house in my shack. There are about 17 ground rods between the 4 poles supporting the arrays, The house, towers and sub panel boxes. All of those ground rods are all interconnected. When the power company came out to certify the system they megs the system and told me that the grounding that I had in place was way better than any sub station.
I take it that proper grounding is a big plus.
Mike
On Mon, Feb 11, 2019 at 11:11 AM Greg Stahlman kj6ko@innercite.com wrote:
General findings have beeen that panels with "mini-inverters" on the panels themselves are very quiet. Panels with "optimizers" or DC-DC converters on each panel and a main inverter on the side of the house are very noisy! I specifically asked for the mini inverters and mine are quiet, but I can hear my neighbors system several hundred feet away with his "optimizers." You can get a bag of ferrites and clamp them on every panel's output and it will drastically quiet them down.
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Lussier Sent: Monday, February 11, 2019 7:48 AM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters now for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
--
*Michael Lussier AE4ML*
*Orange County ARES Emergency Coordinator* *W5YI Volunteer Coordinator **CVE #32761* _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
My personal experience is that Ferrites had little or no effect on the noise from my system. As with about anything "Your mileage may vary".
Steve AI9IN
On 2019-02-11 11:10, Greg Stahlman wrote:
General findings have beeen that panels with "mini-inverters" on the panels themselves are very quiet. Panels with "optimizers" or DC-DC converters on each panel and a main inverter on the side of the house are very noisy! I specifically asked for the mini inverters and mine are quiet, but I can hear my neighbors system several hundred feet away with his "optimizers." You can get a bag of ferrites and clamp them on every panel's output and it will drastically quiet them down.
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Lussier Sent: Monday, February 11, 2019 7:48 AM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters now for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
--
*Michael Lussier AE4ML*
*Orange County ARES Emergency Coordinator* *W5YI Volunteer Coordinator **CVE #32761* _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Thank you so much to everyone for your experiences!
On Mon, Feb 11, 2019 at 11:46 AM skristof@etczone.com wrote:
My personal experience is that Ferrites had little or no effect on the noise from my system. As with about anything "Your mileage may vary".
Steve AI9IN
On 2019-02-11 11:10, Greg Stahlman wrote:
General findings have beeen that panels with "mini-inverters" on the
panels
themselves are very quiet. Panels with "optimizers" or DC-DC converters
on
each panel and a main inverter on the side of the house are very noisy!
I
specifically asked for the mini inverters and mine are quiet, but I can
hear
my neighbors system several hundred feet away with his "optimizers."
You
can get a bag of ferrites and clamp them on every panel's output and it
will
drastically quiet them down.
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike
Lussier
Sent: Monday, February 11, 2019 7:48 AM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters
now
for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
--
*Michael Lussier AE4ML*
*Orange County ARES Emergency Coordinator* *W5YI Volunteer Coordinator
**CVE
#32761* _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available
to all
interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
And the third type, STRING inverter, which is the cheaper and much simpler and has nothing but a single loop of DC wire on the roof. If there is any noise, it is easy to suppress on the ground at the inverter with torroids on just the two DC wires.
The String inverter is simpler and less costly. But it does require all the panels in each array to point the same way. Minimum of about 10 and maximum of about 14 panels per string.
Bob, WB4aPR
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Greg Stahlman Sent: Monday, February 11, 2019 11:11 AM To: 'Mike Lussier' mike.lussier@gmail.com; amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
General findings have beeen that panels with "mini-inverters" on the panels themselves are very quiet. Panels with "optimizers" or DC-DC converters on each panel and a main inverter on the side of the house are very noisy! I specifically asked for the mini inverters and mine are quiet, but I can hear my neighbors system several hundred feet away with his "optimizers." You can get a bag of ferrites and clamp them on every panel's output and it will drastically quiet them down.
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mike Lussier Sent: Monday, February 11, 2019 7:48 AM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Solar panel inverters--radio noise?
I have been running 5.8 Kw system using Kyocera panels and SMA inverters now for 20 years. No noise at all. The inverters are less that 6 feet from my radios.
participants (5)
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Burns Fisher -
Greg Stahlman -
Mike Lussier -
Robert Bruninga -
skristof＠etczone.com