Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 22-05-2012, 06:29   #1
Registered User
 
Duke 48's Avatar

Join Date: Sep 2008
Location: Western KY
Boat: Morgan 321, BELIEVE
Posts: 203
MTTP Solar Charge Controllers

I want to add a charge controller to maintain the battery bank. There seems to be a large price difference between the Tektrum MPPT 30A and the Blue Sky products of similar size. Is the Tektrum a real tracking controller or just a charge controller? I have not found any reviews on the Tektrum.
__________________

__________________
Duke 48 is offline   Reply With Quote
Old 22-05-2012, 06:52   #2
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: MTTP solar charge controllers

A quick google search suggests it only regulates at a single battery voltage, which is not satisfactory.
Be careful some of the Blue Sky regulators do the same thing, which for the money is poor.
There are a lot of ways of implementing MPPT and the regulating circuits! some of them are cheap, with performance to match.
__________________

__________________
noelex 77 is offline   Reply With Quote
Old 22-05-2012, 07:28   #3
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: MTTP solar charge controllers

it claims to be MPPT , but has a very poor input voltage range, Id be suspicious

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 22-05-2012, 07:40   #4
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: MTTP solar charge controllers

I think the best cheap regulators are Gensun. These are PWM and MPPT

Genasun MPPT Solar Charge Controllers
__________________
noelex 77 is offline   Reply With Quote
Old 22-05-2012, 07:52   #5
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: MTTP solar charge controllers

Weigh any expensive controller against possible amps gain from investing the balance into another panel (space and other factors permitting). At time an extra panel does more than a better controller and fewer panels.

b.
__________________
barnakiel is offline   Reply With Quote
Old 22-05-2012, 08:02   #6
Registered User
 
jeremiason's Avatar

Join Date: Oct 2010
Location: Punta Gorda, Florida
Boat: Sea Ray 270
Posts: 1,427
Images: 2
Send a message via ICQ to jeremiason Send a message via Yahoo to jeremiason Send a message via Skype™ to jeremiason
Re: MTTP solar charge controllers

We have a Blue Sky 60amp MPPT Controller and 795 watts of solar.

The controller is made to accept 36-48 volts. Our panels are run in paired series and produce about 40-42a amps per hour in direct sun.

We have been using the controller for three years without a problem and would buy one again.
__________________
Tom Jeremiason
Punta Gorda, Florida

jeremiason is offline   Reply With Quote
Old 22-05-2012, 08:13   #7
Registered User
 
Duke 48's Avatar

Join Date: Sep 2008
Location: Western KY
Boat: Morgan 321, BELIEVE
Posts: 203
Re: MTTP solar charge controllers

Quote:
Originally Posted by noelex 77 View Post
I think the best cheap regulators are Gensun. These are PWM and MPPT

Genasun MPPT Solar Charge Controllers
Thanks for the info, but I did not see anything at the Genasun sight that would be any more cost effective at handling my 270 watts.
__________________
Duke 48 is offline   Reply With Quote
Old 22-05-2012, 09:13   #8
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: MTTP solar charge controllers

Yes gensun is more suited to smaller installations.
The Outback 60 is the best controller in this range, but it is expensive.
This Rogue controlled has gained a very good reputation and it's specs are very good, but I have not personally used it.

Rogue Power Technologies
__________________
noelex 77 is offline   Reply With Quote
Old 22-05-2012, 13:02   #9
Registered User
 
dennisjay's Avatar

Join Date: Feb 2008
Location: Annapolis, Md.
Boat: Island Packet 380 - Delta Blues
Posts: 346
Images: 1
Re: MTTP solar charge controllers

I have a Blue Sky controller running two 135W panels. It's worked flawlessly for five years.
__________________
- Dennis Jay
Annapolis, MD USA

http://sailingdeltablues.com/
dennisjay is offline   Reply With Quote
Old 22-05-2012, 14:31   #10
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,101
Send a message via Skype™ to sy_gilana
Re: MTTP solar charge controllers

Try the IVT Tech MPPT30A from Conrad.co.uk or Conrad.de
We have had good results, have fitted 6 now...on different boats...
__________________
Tight sheets to ya.
http://gilana.org
sy_gilana is offline   Reply With Quote
Old 22-05-2012, 14:49   #11
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
Re: MTTP solar charge controllers

I have the Blue Sky 2512 running 2, 100 watt panels and soon to run another 50 watts. I called the factory and they are open to any questions. So far, I'm happy with mine.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 22-05-2012, 16:31   #12
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: MTTP solar charge controllers

Quote:
Originally Posted by sy_gilana View Post
Try the IVT Tech MPPT30A from Conrad.co.uk or Conrad.de
We have had good results, have fitted 6 now...on different boats...
had a look at the IVT site, good range, reasonable prices too.

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 22-05-2012, 16:53   #13
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: MTTP solar charge controllers

The IVT looks like another controller that is let down by its regulation.
14.1 v for "several minutes" then dropping to 13.7v then turning of completely for 11 minutes !
The bulk voltage is way too low for flooded batteries. The absorption time is much too short. The regulator should maintain the float voltage while there is still solar power, which this one does not seem to do.
This regulator appears to be totally unsuitable for boats with flooded or AGM batteries and a poor choice for gel batteries.
__________________
noelex 77 is offline   Reply With Quote
Old 22-05-2012, 17:11   #14
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: MTTP solar charge controllers

Quote:
Originally Posted by noelex 77 View Post
The IVT looks like another controller that is let down by its regulation.
14.1 v for "several minutes" then dropping to 13.7v then turning of completely for 11 minutes !
The bulk voltage is way too low for flooded batteries. The absorption time is much too short. The regulator should maintain the float voltage while there is still solar power, which this one does not seem to do.
This regulator appears to be totally unsuitable for boats with flooded or AGM batteries and a poor choice for gel batteries.
I think you may want to read the translation from the German sightly differently

what it says

"1. Bulk charging phase
Up to a voltage of 14.7V, the battery is charged with maximum current.
2. Timer phase
The battery is held on a voltage of 14.7V for several minutes. The duration of the timer phase is determined by the type, age and quality of the battery up to 90 minutes
"

absorption exit phase is by timer.
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 22-05-2012, 17:27   #15
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: MTTP solar charge controllers

The manual is available in English here.
http://www.produktinfo.conrad.com/da...e_en_fr_nl.pdf
1. Up to 14.1 with maximum current.
2. Held for several minutes
3.13.7v
4. No charging current
5. Reactivated after 11 minutes.

I hope there are 2 different models and the one above is not fitted to any boats.

The above specs were for a

IVT MPPT-Solar-Laderegler 30A 18319
From Conrad
__________________

__________________
noelex 77 is offline   Reply With Quote
Reply

Tags
solar

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:10.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.