[TowerTalk] Solar Array Noise

[Tracey Gardner]

Virtually all the inverters in use in the UK are 50Hz ones as they are grid 
connected, so we don't generally get the problems that you're talking about

http://www.windandsun.co.uk/products/Inverters/SMA-Inverters/Sunny-Boy-Inverters

73s Tracey G5VU


----- Original Message ----- 
From: "Wilson" <infomet at embarqmail.com>
To: <towertalk at contesting.com>
Sent: Tuesday, October 28, 2014 4:23 PM
Subject: [TowerTalk] Solar Array Noise


>A little speculation:
> I don't know, but doubt there are many actual 60Hz inverters out there and 
> they would be horrendously costly at multiKW levels, not to mention 
> inefficient.
> Switch rates are tens of KHz, square waves, thus the noise, so the secret 
> is shielding and choking.
> Visit all the sites you can, with a pocket radio tuned to the AM band.  I 
> expect you'll be able to tell which are noisy.
> Your dealer should be able to take you to sites with the hardware he's 
> selling.
> And be SURE you understand your contract with your power company.  They 
> won't pay you any more than they have to.
> They will also give you a hard time about batteries, if you are in an area 
> where they are required to pay premium rates for green power.
> Charging your batteries at off peak rate and dumping them for green rate 
> is NOT what they have in mind!
> I know people who have batteries for backup, but they are locked out of 
> the outgoing circuit somehow.
> WL
>