300V DC Power Supply? [RE-wrenches]

[steve at windandsun.co.uk]

We use a 'home brew' power supply which I put together to test the 
'Windy Boy' (a version of the SWR-2500 which we developed for use 
with 2.5kW Proven wind turbines) in times of no wind. We now use this 
for SWR-2500 bench testing and inverter parameter verification & set-
up. We use a PV array for the smaller Sunny Boy inverters.
This power supply consists of a 12VDC:230Vac sine wave inverter (a 
Studer AJ201) run from a 12V battery. Output goes to a full-wave 
bridge rectifier which then gives ~ 300VDC as input for the 
Sunny/Windy Boy.
I was fairly nervous about switching on, and I don't know if SMA would 
approve, but it works fine.
I guess you could get suitable inverters in the US from AEE, or use a 
120 Vac inverter 1:2 transformer then the rectifier.

I hope this is useful,
Cheers
Steve
Wind & Sun Ltd


To:             	"RE-wrenches-topica.com" <RE-
wrenches at topica.com>
From:           	David Blecker <blecker at seventhgenergy.org>
Subject:        	300V DC Power Supply? [RE-wrenches]
Date sent:      	Tue, 29 Apr 2003 08:15:10 -0500
Send reply to:  	RE-wrenches at topica.com

> Does anyone have a line on affordable 300 VDC power supplies?  I think it 
> would be nifty to bench test the SunnyBoy with controlled inputs (and where 
> its always warm and dry and there are no nervous customers breathing down 
> your back) before taking  the unit out for installation.  Does anyone pre-test?
> 
> Thanks,
> Dave
> 
> ----------------------------------------------------------
> David Blecker, P.E., Director
> Seventh Generation Energy Systems
> 608-424-1870 (ph)  424-1810 (fax)
> 
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Wind & Sun Ltd., Humber Marsh, Stoke Prior,
Leominster, Herefordshire, HR6 0NE.
Web: www.windandsun.co.uk

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