Hi Jeremy;
I'm referring to the Clipper. It includes everything that the regular
control box MNTCB includes: rectifier, bypass/ brake switching, but also
has the voltage limiting control circuit, and dump resistors. Midnite
sells several size resistors, so I'm waiting to find out which ohm
rating is best for the XL.1 with the 24 v MS stator.
Apparently, Bergey has had 4 different stators. Only the new ones 24 MS
and 48 MS are compatible with the Midnite Classic's MPPT. I don't know
what date they went to the newer stators, but the old XL.1s would need
to update the stator.
Mad scientist time:
It might also be possible to just remove the rectifier at the turbine,
and then run the 3 phase current through a transformer, before the
Clipper to get the voltage high enough for MPPT. You'd need to add a
3rd conductor too.... Still no way to do it without dropping the
tower.......hmmmm, time to sleep.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 2/19/2014 7:56 PM, All Solar, Inc. wrote:
Ray,
Are you referring to Midnite's wind turbine control box, which is what
comes with the Bergey?
It does not include any diversion for slowing the turbine. I
questioned why they did not use the clipper, but did not really get an
answer. We have installed 2 of the Excel 1s in the last 6 months with
no problems. I also believe the clipper would take care of it, just
have no experience with it yet.
Jeremy Rodriguez,
President
All Solar, Inc.
1463 M
Penrose Colorado 81240
719-372-3808 office
719-372-3804 fax
www.asolarelectric.com <http://www.asolarelectric.com>
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
On Feb 19, 2014, at 2:27 PM, Ray Walters <r...@solarray.com
<mailto:r...@solarray.com>> wrote:
We've done some research on this, as we're doing an XL.1 project at
12 v right now.
I don't have first hand experience with the Clipper yet, but I have
over a decade of XL.1 experience and many years with Midnite's
electronics. The Clipper is exactly what is needed. It also moves
the rectifier down to the ground, and offers a braking disconnect
system to shut the turbine down completely if needed.
The Classic by itself isn't really controlling the turbine speed, and
counting on the XL,1 mechanical governing design by itself is
definitely full hardy.
Unfortunately, Bergey's new staff is not really up to full speed yet
on what is needed to make their turbines work long term. At least
they've abandoned the old XL.1 controller. Hopefully the turbine
itself hasn't changed too much; I've seen them survive some very high
speed winds and direct lightning strikes.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 2/19/2014 1:39 PM, Chris Daum wrote:
Hello Wrenches:
We have a customer who's got one of the Excel One wind gennies, and
he's burnt up two Classic controllers (overvoltage....the 2nd time
it got over 400V before it burnt up). Bergey's been dragging their
feet as to why this is happening; they're saying it's probably an
"upslope site" where the RPM just gets too high, among other things.
Metering tests prove that the stator is OK.
They also said that Midnite Solar has a 'clipper' to prevent
overvoltage; do any of you have any experience with this device?
It's ~$1200, and of course there is no mention of this on Bergey's
web site or in their XL.1 manual.
I have several other XL.1s in the general area, but they are on
their old 24V controller. So I am looking for more information on
anyone who's using this 'clipper'.
Please feel free to contact me off list.
Thanks!
Chris Daum
Oasis Montana Inc.
406-777-4309
_______________________________________________
List sponsored by Home Power magazine
List Address:RE-wrenches@lists.re-wrenches.org
Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
<mailto:RE-wrenches@lists.re-wrenches.org>
Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
<http://www.re-wrenches.org/etiquette.htm>
Check out participant bios:
www.members.re-wrenches.org <http://www.members.re-wrenches.org>
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
