[RE-wrenches] Whisper Controller Conversion

[Dan Fink]

Yes, the "EZ-Fire" controller.
I agree with Roy; there's nothing magic about the turbine alternator
itself, and it's easy to build your own stop switch and rectifier/heat sink
assembly. And maybe then run it thru a Midnite Classic for MPPT. I've never
done it with a 200, but works fine on 100s.

Dan Fink
Buckville Energy
IREC Certified Instructor™ for:
~ PV Installation Professional
~ Small Wind Installer
NABCEP / IREC / ISPQ Accredited Continuing Education Providers™
970.672.4342



On Fri, Feb 6, 2015 at 12:33 PM, Windsine Inc. <windsine at gmail.com> wrote:

> If the stator is now configured for 48v nominal, why not run it through a
> conventional packaged 3 phase rectifier directly stalled to the 48v battery
> bank through a fuse of course (that's sized to never blow under turbine
> current). You can also add a shorting stop switch prior to the rectifier -
> not after it. That's if you can't get your controller repaired.
>
> You may lose a little operating efficiency but it works fine.
> You could also run it through an mppt controller to get your efficiency
> back but you will also have to add the rectifier and stop switch.
>
> RoyR
> On Feb 6, 2015 7:55 AM, "Mac Lewis" <maclewis1 at gmail.com> wrote:
>
>> Hello wrenches,
>>
>> Yesterday, we converted a Whisper 200 over from 24V to 48V operation.  We
>> lowered the turbine and rewired it.  We set the Dip switches in the
>> controller (1 & 2 to off) and rewired the dump load as specified in the
>> manual.  For some reason, when we put the 55V battery voltage to the
>> controller, it smoked it.  We triple checked all of our connections and
>> settings.  Everything looks like the manual specifies.
>>
>> Luckily for us, we happen to have a spare Whisper controller that I can
>> give this guy.  If it was a fluke and the controller just had a bad
>> component, fine, no problem.  However, I'd like to know if I'm missing
>> something about the 48VDC conversion before we smoke another one.  Are
>> there known issues, operating this controller at 48V?
>>
>> Any insights are appreciated.  Thanks, in advance.
>>
>>
>>
>> --
>>
>>
>>
>> Mac Lewis
>>
>> *"Yo solo sé que no sé nada." -Sócrates*
>>
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