I have a set of panels doing nothing at the moment on a set of wheels ...!!!
vik...& expensive
That is only one set of panels ,panels with varying specs would also be required.
Then understanding all that , look at a full range of operating conditions & Australia
Panels :
Designed mpp
MPP @ varying panel temps [ big differences between Tassy & NW Australia ]
Panel irradiation [light intensity on panel] varies greatly at time of day & location
Panel combinations [series & parallel]
Battery :
Battery types
Battery state of charge voltage[very important when comparing MPPs to PWMs ]
Controlling all the conditions so all the test can be done under exactly the same controlled conditions
I could go on ,but the above gives some indication of how real comparative tests need to be carried out'
It is not just a question of changing regulators for a day or two & see which performs best
Australia is a big country with widely varying conditions .
What happens in one location throughout the year ,say Tassy ,will be totally different to the northern parts
So how do you think you can do a comparison between the two controller types Peter? Obviously a power supply on a lab bench isn't going to duplicate the conditions you just mentioned, it can't even duplicate a single solar panel's operation.
The battery SOC can easily be duplicated so that is not an issue. Panels that will fit on an RV roof can be easily duplicated or I can even reroute the cabling to change from parallel to series strings if that would solve that problem. I was thinking of a mths recorded data for each type of controller and a small panel in short circuit or high resistance load to measure irradiance levels to provide data to match solar conditions between each type of controller testing.
So, rather than just saying it can't be done, add any other test parameters you think will be required to do a side by side test?
T1 Terry
Read my post again Terry
I did not say it cannot be done!
What I tried to show , is that it is beyond the capability of ANY back yard experimenter
That what I have been saying all along.
I am not sure why you keep harping back to bench top power supplies
Where did I suggest any such thing? what purpose would it serve?
Did you try that ,not realizing it cannot simulate a battery @ various SOC?????
In fact in no way simulate a battery
I think others [those who have some knowledge of such things ] will well understand .
but the T1 true believers will not ,but they do not need to worry, because as I have said many times you have experimented until you found a set up that is very suitable for use with your LI BATTERIES
T1 Terry said
03:23 PM May 29, 2018
Why the put down attacks Peter? The power supply is the preferred method used by those attempting to show how much better an MPPT controller is than a PWM controller and all I was saying was that it did not represent real world solar inputs.
So please bury the hatchet and let's try to get a test regime that the general RV user can relate to so we can set up a test to show which controller does a better job or if there is no real gain to be had. Surely that is what all this arguing is about and wouldn't this settle it once and for all?
T1 Terry
T1 Terry said
06:46 PM Jun 7, 2018
Hmmm...... Seems the MPPT choir has lost its voice ..... or are not game to put their theories to the test ..... which do the members reckon is the more likely :lol:
T1 Terry
Jaahn said
09:11 PM Jun 7, 2018
T1 Terry wrote:
Hmmm...... Seems the MPPT choir has lost its voice ..... or are not game to put their theories to the test ..... which do the members reckon is the more likely :lol:
T1 Terry
Terry you do not know when to quit. Give us a break
Jaahn
Ron-D said
09:43 AM Jun 8, 2018
He will never get the message ,just hammers you into the ground with huge boring posts,and thinks hes the winner...
Kebbin said
09:48 AM Jun 8, 2018
Now I understand why you were given the boot, your just an antagonist.
T1 Terry said
11:55 AM Jun 8, 2018
Jaahn wrote:
T1 Terry wrote:
Hmmm...... Seems the MPPT choir has lost its voice ..... or are not game to put their theories to the test ..... which do the members reckon is the more likely :lol:
T1 Terry
Terry you do not know when to quit. Give us a break
Jaahn
I was trying to put this nonsense argument between the 2 types of controller to the test so members here could judge which was better based on facts rather than faith they weren't being mislead by those who have never actually put their ideas and theories to the test.
I thought the opportunity to put both ideas to the test to get a definite answer would appeal to members here, but apparently not.
T1 Terry
Baz421 said
10:38 PM Jul 23, 2018
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged.
My 2 cents worth.
PS Just converted van to MPPT as well. OLd PMW died and cooked battery,,, see separate post today.
Cheers Baz
T1 Terry said
12:01 PM Jul 24, 2018
Baz421 wrote:
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged.
My 2 cents worth.
PS Just converted van to MPPT as well. OLd PMW died and cooked battery,,, see separate post today.
Cheers Baz
You mentioned in the other post the PWM controllers were 11yrs old and no mention of quality of either the PWM controllers or the MPPT controller. The bit about bringing the batteries up quickly before fully charged says more about the condition of the batteries rather than the controller ... just my 2 cents worth
T1 Terry
Baz421 said
05:46 PM Jul 24, 2018
T1 Terry wrote:
Baz421 wrote:
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged.
My 2 cents worth.
PS Just converted van to MPPT as well. OLd PMW died and cooked battery,,, see separate post today.
Cheers Baz
You mentioned in the other post the PWM controllers were 11yrs old and no mention of quality of either the PWM controllers or the MPPT controller. The bit about bringing the batteries up quickly before fully charged says more about the condition of the batteries rather than the controller ... just my 2 cents worth
T1 Terry
Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick
Baz421 said
05:48 PM Jul 24, 2018
T1 Terry wrote:
Baz421 wrote:
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged.
My 2 cents worth.
PS Just converted van to MPPT as well. OLd PMW died and cooked battery,,, see separate post today.
Cheers Baz
You mentioned in the other post the PWM controllers were 11yrs old and no mention of quality of either the PWM controllers or the MPPT controller. The bit about bringing the batteries up quickly before fully charged says more about the condition of the batteries rather than the controller ... just my 2 cents worth
T1 Terry
Controllers on truck were new ones < 6 months old. Battery charging quickly was brand new Yuasu battery
T1 Terry said
03:12 PM Jul 26, 2018
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
oldtrack123 said
03:52 PM Jul 26, 2018
T1 Terry wrote:
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Before you get too excited ,best read it all again
Especially this bit
"Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick"
Note
NEW BATTERY no doubt almost fully charged
Baz421 said
04:51 PM Jul 26, 2018
oldtrack123 wrote:
T1 Terry wrote:
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Before you get too excited ,best read it all again
Especially this bit
"Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick"
Note
NEW BATTERY no doubt almost fully charged
Yep voltage came up too quick I believe BEFORE battery was fully charged. Yep was new battery Ralph.
T1 Terry said
04:56 PM Jul 26, 2018
Baz421 wrote:
oldtrack123 wrote:
T1 Terry wrote:
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Before you get too excited ,best read it all again
Especially this bit
"Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick"
Note
NEW BATTERY no doubt almost fully charged
Yep voltage came up too quick I believe BEFORE battery was fully charged. Yep was new battery Ralph.
From the opening post
"
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged."
Last line prompted me to get a better clarification Peter, not quite sure how you managed to get your interpretation from what was written but it's not how I read it, so I'm guessing the OP will be the person best suited to clarifying just what he meant.
T1 Terry
Bill B said
05:04 PM Jul 26, 2018
Here we go again
T1 Terry said
05:09 PM Jul 26, 2018
Bill B wrote:
Here we go again
Not a hope Bill B, not falling for Peter's tactics again
Read my post again Terry
I did not say it cannot be done!
What I tried to show , is that it is beyond the capability of ANY back yard experimenter
That what I have been saying all along.
I am not sure why you keep harping back to bench top power supplies
Where did I suggest any such thing? what purpose would it serve?
Did you try that ,not realizing it cannot simulate a battery @ various SOC?????
In fact in no way simulate a battery
I think others [those who have some knowledge of such things ] will well understand .
but the T1 true believers will not ,but they do not need to worry, because as I have said many times you have experimented until you found a set up that is very suitable for use with your LI BATTERIES
So please bury the hatchet and let's try to get a test regime that the general RV user can relate to so we can set up a test to show which controller does a better job or if there is no real gain to be had. Surely that is what all this arguing is about and wouldn't this settle it once and for all?
T1 Terry
T1 Terry
Terry you do not know when to quit. Give us a break
Jaahn
He will never get the message ,just hammers you into the ground with huge boring posts,and thinks hes the winner...
I was trying to put this nonsense argument between the 2 types of controller to the test so members here could judge which was better based on facts rather than faith they weren't being mislead by those who have never actually put their ideas and theories to the test.
I thought the opportunity to put both ideas to the test to get a definite answer would appeal to members here, but apparently not.
T1 Terry
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged.
My 2 cents worth.
PS Just converted van to MPPT as well. OLd PMW died and cooked battery,,, see separate post today.
Cheers Baz
You mentioned in the other post the PWM controllers were 11yrs old and no mention of quality of either the PWM controllers or the MPPT controller. The bit about bringing the batteries up quickly before fully charged says more about the condition of the batteries rather than the controller ... just my 2 cents worth
T1 Terry
Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick
Controllers on truck were new ones < 6 months old. Battery charging quickly was brand new Yuasu battery
Interesting, thanks Baz, so the PWM controller brought batteries up faster than the MPPT controller? Or am I reading that wrong
T1 Terry
Before you get too excited ,best read it all again
Especially this bit
"Terry,,, this post is truck (Landcruiser UTe) other post was van. PWM on TRUCK brought new Yuasu battery up very quick"
Note
NEW BATTERY no doubt almost fully charged
Yep voltage came up too quick I believe BEFORE battery was fully charged. Yep was new battery Ralph.
From the opening post
"
Comparison,,,
120W of panels and 100aH Yuasu battery running truck fridge.
2 PMW controllers very average performance,,, MPPT far better in practice.
PMW just brought voltage up quickly IMHO before fully charged."
Last line prompted me to get a better clarification Peter, not quite sure how you managed to get your interpretation from what was written but it's not how I read it, so I'm guessing the OP will be the person best suited to clarifying just what he meant.
T1 Terry
Not a hope Bill B, not falling for Peter's tactics again
T1 Terry