With his permission, I’m taking part of an email Jean sent me about the UTI / SOL / SBU parameters 💡
Many of us are wondering how to understand, analyze, approach and manage the functioning of these parameters. This is my case! With the data of the software we can see better what happens, but not so simple to understand why it does this or that.
That’s why Jean’s explanations are welcome! Do not hesitate to bring your stone to the building to share your knowledge. Welcome !
Here is a part of the mail:
“yes I spoke to you in my last message of the recurring problem to act permanently on these changes of paramount operation of these models of inverter … in fact I still have in service a model of 2019 but in 2,4KW, with those, the problem does not arise by choosing “solar first SBU” as soon as the solar energy is not sufficient, it passes on the networks not to draw on the batteries !…whereas on the new ones, it remains this “bypass” always present on the position SOL… In fact, according to what I studied while deconstructing them (yes, it’s my fault, I always have to know how it works, even if it’s new and not broken down !…😅), it’s that these machines are sold as “energy saving assistants”, I’ll explain. …the system permanently monitors the consumption of the elements connected on it; of course it will give priority to the sun if it is available but never at 100%! in the measure of 2/3-1/3 …moreover at this level, the assistance to the lack of solar energy is done with the help of the network edf or the park of battery with the help of thyristors and transistors Cmos but never at the level of a relay for the assistance…in fact, you do not notice it! To make it simple, a basic example, it’s like if you fill a basin with several water taps, opening more or less these taps but without ever closing them completely except in the limits! a real technological prowess thanks to the management by µ-processors…which was not the case in the first generations or there we made intervene relays. So all this to say that if you don’t intervene manually to force the recent models to pass on SBU, i.e. only the PV, well you use them (like the 3/4 of the solar customers besides, except for the “nitpickers like us”) as sources of assistance!…so either you intervene manually and regularly at the level of the parameters, or you intervene more easily remotely thanks to your SmartPhoton software! ( Jean Luc hip hip hip Hourra ! ) but, there is a “but” only a passionate of technology will make the step !…😅 hence my previous mail on the ease of pressing a button within reach of the simple mortal !. That’s why your short video presentation of such a means is to be developed from A to Z in a video .( or several for that matter ..) right now for example I’m watching and trying to assimilate the videos on Nodred, some detail the steps in a thorough way so that those who watch understand . ..but I personally have a hard time following because I don’t have the capacity to assimilate this technology since I’m not 20 years old anymore and I don’t have much experience on “this way of talking” to a machine…it’s not like electronics which I’ve been immersed in since I was a child… 😀😅 and so I think that if you start making videos on the subject by detailing your project you would surely attract an audience by referring them to your site“
The video is this one:
