I'm sure somebody more knowledgable already mentioned this, but back in
the last century, when wiring up C40 charge controllers for micro hydro,
they were wired between the battery and the dump load, not between the
hydro unit and the batteries. Basically the turbine ran fully loaded
all the time, and when the batteries were full it started sending a PWM
regulated current to the resistor bank. I was always under the
impression that letting turbines (wind or hydro) free wheel was a really
bad idea.
Again we don't do a ton of hydro, hence my initial disclaimer.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/19/2015 1:58 PM, Dan Tittmann wrote:
would try contacting Deric @
http://www.homehydro.com/
he likely will be able to help you.
*hipo...@asis.com <mailto:hipo...@asis.com>*
Daniel Tittmann
CTO
Greenwired
www.greenwired.com <http://www.greenwired.com>
dan...@greenwired.com <mailto:dan...@greenwired.com>
707-923-2001 (office)
707-206-5088 (Cell)
On Thu, Mar 19, 2015 at 11:26 AM, Windsine Inc. <winds...@gmail.com
<mailto:winds...@gmail.com>> wrote:
You could use a triac to feed AC from turbine directly to the dump
load just before HyperVOC using the Aux relay in classic to fire
the Triac. Then program the Aux logic to revert to normal when
turbine voltage/RPM drops from dump load loading.
Kinda like an Aux triggered bypass circuit
Roy Rakobitsch
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
NYSERDA eligible Small Wind installer
Certified Advanced Tower Climbing, Safety & Rescue
Wind/PV Design Engineer
Windsine LLC
631-514-4166 <tel:631-514-4166>
www.windsine.org <http://www.windsine.org/>
On Thu, Mar 19, 2015 at 11:53 AM, Jeff Oldham
<starpowe...@juno.com <mailto:starpowe...@juno.com>> wrote:
Finding this application quite frustrating - Harris 120Vdc 1kW
turbine, Classic 250, 48V batt., 1200W load dump. The manual
downloaded just before purchase stated: "This mode will NOT go
to resting even when the input has been disconnected and will
always stay awake so the turbine has the least chance of
over-spinning." It now seems that this is not the case and
this sentence is no longer in the manual. My installer cannot
get Midnite to confirm one way or the other and they have been
guessing for over a month on how to keep the CC from going
into RESTING that open circuits the hydro and puts the CC into
hyperVOC at 253V and will never reconnect. To complicate
things there is also ~4kW of PV on FM60's, when they drive up
batt V. to above what the Classic wants it drops into RESTING
and back into HyperVoc. Midnite has been very responsive and
have suggested every possible setting and combination and my
installer has made the 3 hour RT drive far too many times to
only find the most recent "suggestion to try" another approach
not working. INSOMNIA does not do as the name implies and
still allows the CC to step out if external charging elevates
the V above what the Classic wants. i.e. FM60 in Bulk, Absorb
or EQ. when the Classic wants to Float.
I fully realize that the Clipper will deal with this for a
considerable amount of money, but I've heard of several folks
using a Classic or Outback w/o a Clipper to deal with turbines
w/o allowing freewheeling and runaway VOC. If the turbine is
not dropped by the Classic the VOC will never exceed 120Vdc.
Is there anyone of you out there that knows:
1) Is there a way to keep a Classic from ever moving into
RESTING, a true INSOMNIA? If it will not do as originally
stated in the manual I need someone to step up and say so, so
we can stop guessing and wasting time.
2) If so what is the secret, please?
I really like all of Midnite's products and they are better
than most with reasonable prices, support has always been 1st
rate. This application oddly seems to have all of us at a loss
pulling our hair out and losing money.
With much appreciation for all input.
From the Solar, Wind and Hydro powered office of Jeff
Oldham/Regenerative SOLutions
____________________________________________________________
*Man, 63, Avoids Wrinkles*
63 Yr Old Man Shares Simple DIY Skin Tightening Method He Uses
At Home
<http://thirdpartyoffers.juno.com/TGL3132/550aff4de71bf7f4d66bfst04vuc>healthylivinglifeguide.com
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