two arrays [RE-wrenches]

[Darryl Thayer]

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I think the zener idea might require some high power
Zeners.  If I put a zener diode across a 3KW array and
it only had to absorb 10% of the power, that is still
300 watts.  This is doable using a high power
transistor and Zener but maybe not practical.  

At one time Bob Gudgel of Outback was working on a
clipper circuit that chopped the power to reduce the
voltage.  I think that it may have fallen into the
category of good idea not enough time, or use.  
Darryl

--- Warren Lauzon <windsun at wind-sun.com> wrote:
> Or you could maybe just put Zener diodes across the
> panels or a set of 
> panels.
> Northern Arizona Wind & Sun, Inc.

> ----- Original Message ----- 
> From: "David Katz" <david at aeesolar.com>
> Hi Jeff,
> I have ad an idea for a long time about a device
> that shorts one module
> in a series at a preset low temperature. It would
> act like a bypass
> diode on a shaded module controlled by a thermistor
> so at a preset
> temperature the array would drop in voltage. This
> would probably not
> cause much loss of power because as soon as the sun
> hit the array
> directly, it would warm up and drop in voltage.
> I will work on the idea.

> David Katz


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