Inverter Shoot-Out continues [RE-wrenches]

[Joel Davidson]

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Hello Don,

Lots of people are interested in real-world PV. And definitely lots of
customers.

Bench testing is also very important. The April 2004 issue of Photon Das
Solarstrom Magazin (German) has a great full-page color photo on page 50 of
a lab with a wall full of European inverters being tested.

Best regards,
Joel Davidson

Original Message:
-----------------
From: Don Loweburg, Offline i2p at aol.com
Date: Tue, 30 Mar 2004 13:15:25 EST
To: RE-wrenches at topica.com
Subject: Re: Inverter Shoot-Out continues [RE-wrenches]


In a message dated 3/30/2004 9:03:32 AM Pacific Standard Time, 
tony at appliedsolarenergy.com writes:
Only Joel responded.  Is he the only one who has collected data, or is
there 
no interest in real world performance?  


Real world from central Calif:


2.5 kw cec rated and  Sunny boy 2.5 inverter

March 25 readings

Fixed array 12.5 kwh
Tracked array 16.4 kwh  both measurements taken at 4:40 am

These two systems are not side by side but very similiar in all respects


The fixed system comes very close to the simple estimate of .7 times STC
(3kw 
here)

The tracked system yields about a third more energy (kwh per day). A 
production incentive would be of benefit here.

I have lots of systems that I monitor causually. I believe my results
(mainly 
SB inverters and Kyocera modules) represent pretty good sample . However 
these ancedotal results lack the rigor being discussed by others. 

best,Don



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**** Bounces like rubber! Shatters like ceramic! ****
Discover Crazy Aaron's Thinking Putty in grown up 
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http://click.topica.com/caab4CEbz8Qcsbz9JC9f/ Crazy Aaron Enterprises
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