October 15, 20223 yr 2 hours ago, Coulomb said: So this has given me a chance to compare firmware versions 91.04 and 92.04. They are nearly the same, with just a few changes: 91.04 when calculating some power limit, subtracts 200 W where 90.06 subtracted 100 W. 92.04 goes back to using 100 W. So here 92.04 appears to be undoing a change that was made in 91.04. 92.04 when calculating a new MPPT control constant no longer has the case where this constant is set to 13. There are other cases where it is set to values between 29 and 77. This change is duplicated for MPPT2. None of these seems to be getting to the core of the problem, which is presumably why 92.04 still doesn't seem to fix the problem. After hours of work on this, I just wanted to post this while it was still fresh in my mind. Thanks a lot for the time u waste. Its wonderful that exist people that try to solve the problem. 92.04 gives me the easun aftersale department, after 2-3 days i flashed 91.04 and i feedback to them.that not.worked. Probably they are trying to solve it, cause they modified the 91.04 in 2 days, i saw that the dimension of the files is the same. What do u think we must chsnge in this firmwares? Or only voltronic/easun/mppsolar will can?
October 17, 20223 yr On 2022/10/14 at 4:20 AM, Georg594 said: MPPT minimum voltage is now 100V 100V is not much higher than the default 90V, though I note that many other Voltronic Power models have a minimum MPPT voltage of 120V. I assume that you have tested this on your own inverter and found it to have fixed the problem, is that correct? My initial assessment of the problem was totally wrong. I somehow thought that the MPPT was "short circuiting" the panels. This reduces the available power to low levels, but what I failed to consider was that the current does not diminish at all. So that's not the reason for getting stuck at low panel voltage even when sun increases later. My new theory is that the power supply for the gate drive of the MOSFET simply isn't always working at around 90V (panel voltage). So maybe the MOSFET simply can't turn on at low panel voltage, and that keeps the panel current low, keeping the firmware in the part that reduces the reference voltage in an effort to get PV charging started quickly. Does this theory agree with your observations? Would it be possible to try a patch that only reduced the minimum MPPT voltage to 100V, yet made no other changes (other than version number)? If that works, I'm happy to transfer those few changes to 92.04 for the Easun owners.
October 17, 20223 yr Author Forget your gate theory The internal supply is one point...at around 82v it begins and at 92 v it has maximum current ( stolen from MPPT circuit ) The eeprom contains the limits 450 & 90 for MPPT. When now the internal supply is stealing energy the voltage will be hold low from MPPT and if the MPPT Algorithm want to increase the voltage the supply reduce it's own current and MPPT thought lower power and then the algorithm lowers the voltage until again the minimum (90v ) is reached..... This is the first problem>>> the higher the minimum voltage the better the Start...= Minimum 100 better more The other problem what makes it more shitty is a code what checks if the PV input current is below a threshold of 1 A oder 0.6A and 2A....(this is different in some Firmwares ) And under this the MPPT reduce the voltage in every calculation of 20v until it's again at 90v what is the lower limit. In this code sequence i reduce the subtraction value of 20 to zero .... So the MPPT can work down to 0.1A with no problems In my Firmware there is the minimum not read by the eeprom....I program the 100v into the flash and change the code to read flash information for MPPT low limit....all other limits are still read from eeprom..
October 17, 20223 yr Hello. Why did voltronic make a good inverter and put bad firmware in it? Sometimes it happens to me that the mppt voltage is 90V and the current is 1.6A. This is completely nonsensical. Do you think there is a reason for this, or is it just a bug in the firmware. When I disconnect one of the strings and connect it again, the voltage on both strings increases to the nominal value (330V). When it is cloudy, production is minimal. The old 5kw variant worked even when it was cloudy with the same PV field. I am very much looking forward to the day when this error can be solved.
October 17, 20223 yr Author This is exactly the problem....like you describe it. This was the reason for beginning to change the code My Firmware eliminate all of the problems.
October 17, 20223 yr Hi I have an Easun inverter. I think it's not a clone, because I flashed 90.06 into it and everything works as it should (except for mentioned MPPT bug). Do you think I should try your firmware version? If something doesn't work, is it possible to go back to the original (or 90.06)? What's your opinion on that? Well thank you.
October 17, 20223 yr Author My versions are all based on 90.06 If this version is working for you my version are full compatible and you can flash back to original without any problems if you want it. I would test my first version with 200v MPPT min voltage for better results if your configuration of the panels is high enough. Got my own to 310v min MPPT Got 11 Trina 400w in series ( 420v idle voltage)
October 17, 20223 yr Hi. I have 10 Canadian solar 385W on each string. That is, a total of 20 pieces. Open circuit voltage is about 400V-412V. So should I try at first your first release? (based on 90.06) Or directly Second? (beta release 90.08) I read what the difference is between your firmwares. But I don't know which one would be more suitable for me. Thank you very much.
October 17, 20223 yr Author this is exactly what i want to know 😀 i will make you a 280V min (at pv1 and pv2) mppt version to get maximum performance. do you have 10 moduls in series on pv1 and 10 on pv2 ? did i got it right?
October 17, 20223 yr 39 minutes ago, Georg594 said: presne toto chcem vedieť😀 Vyrobím vám mppt verziu na 280 V min (pri pv1 a pv2), aby ste dosiahli maximálny výkon. máš 10 modulov v sérii na pv1 a 10 na pv2 ? pochopil som to dobre? Yes, you have right. I have 10 on PV1 and 10 on PV2.
October 17, 20223 yr 29 minutes ago, Georg594 said: Ahoj, zmenil obe hodnoty mppt min na 280V pomenovaná verzia na 90.09 8KW.zip 1,42 MB · 0 stiahnutí Thank you very much. I wil try it. I am very curious how it will work. I will let you know and post graf of PV1 again.
October 17, 20223 yr 3 hours ago, biondiba said: Bună , am un invertor Easun. Cred că nu este o clonă, pentru că am introdus 90.06 în el și totul funcționează așa cum ar trebui (cu excepția erorii MPPT menționate). Crezi că ar trebui să încerc versiunea ta de firmware? Dacă ceva nu funcționează, este posibil să te întorci la original (sau 90.06)? Ce parere aveti despre asta? Ei bine, multumesc. What firmware do u have ..oem ? 72.03 ? Its easun smw8k white colour ?
October 17, 20223 yr 50 minutes ago, Georg594 said: Bună, a schimbat ambele valori mppt min la 280V versiunea numită la 90.09 8KW.zip 1,42 MB · 0 descărcări And what happenes in the morning and aftet sunset when the tension is under 280v ?
October 17, 20223 yr 4 minutes ago, add1c7ed55 said: What firmware do u have ..oem ? 72.03 ? Its easun smw8k white colour ? If I remeber well it was 72.03. And yes it is SMW8K white.
October 17, 20223 yr 3 minutes ago, add1c7ed55 said: And what happenes in the morning and aftet sunset when the tension is under 280v ? I dont know, we will see tomorrow. I am curious.
October 17, 20223 yr Author If the voltage is below 280v MPPT will stop surging current.... But if you look at his configuration of 10 Canadian moduls in series.... there will be a current below 0.1A if you are at 280v.... then it will fall down to ~90v of the hardware limit.... At this point there is everything "pressed" out of it .... solar power is so weak that it's just useless Mine jumps in the morning from 89v to 380v when there is a current of more than 0.1A . In the evening the same but opposite.
October 17, 20223 yr 3 minutes ago, Georg594 said: Dacă tensiunea este sub 280v, MPPT va opri creșterea curentului.... Dar dacă te uiți la configurația lui de 10 module canadiene în serie.... va fi un curent sub 0,1A dacă ești la 280v.... atunci va scădea la ~90v din limita hardware.... În acest moment, totul este „presat” din el.... energia solară este atât de slabă încât este pur și simplu inutilă Al meu sare dimineața de la 89v la 380v când există un curent mai mare de 0,1A. Seara la fel, dar opus. Its awesome if i like that. I have the same smw8k, and i have on twice mppts 9x450w, 50voc/pv, what voltage i need in the patch to.work perfect? And 2nd question, can u make the firmware without that f09 error active ? Thanks
October 17, 20223 yr Author Look at the solar power when it jumps....this is under 30 watts If you relate I got 4.4kw solar peak power it's just nearly perfect
October 17, 20223 yr 8 minutes ago, Georg594 said: Dacă tensiunea este sub 280v, MPPT va opri creșterea curentului.... Dar dacă te uiți la configurația lui de 10 module canadiene în serie.... va fi un curent sub 0,1A dacă ești la 280v.... atunci va scădea la ~90v din limita hardware.... În acest moment, totul este „presat” din el.... energia solară este atât de slabă încât este pur și simplu inutilă Al meu sare dimineața de la 89v la 380v când există un curent mai mare de 0,1A. Seara la fel, dar opus. This is my voltage at 20°C outside
October 17, 20223 yr 3 minutes ago, Georg594 said: Look at the solar power when it jumps....this is under 30 watts If you relate I got 4.4kw solar peak power it's just nearly perfect And this happenes in sunny sky and cloudy or rainy too ? I ask this cause with my firnware 72.03 work ok on full sun, when i have 70/100w its increasing, but on rainy or cloudy, i have 3A om string and tge voltage remains 90v.
October 17, 20223 yr 1 hour ago, biondiba said: I dont know, we will see tomorrow. I am curious. U want to flash it today ? Pls come back with feedback after that. U can update with that reflash tool in the archive? I couldnt. Dont know why.
October 17, 20223 yr Author Yours seem to be incompatible with Firmware 90.06 I didn't get the knowledge to tweak your Firmware Version maybe Coulomb will do it . The original MPPT works fine with direct sunlight.... only if not, then my tweak is relevant. My screenshot is a cloudy day definitely no direct sunlight.
October 17, 20223 yr 8 minutes ago, Georg594 said: Al tău par să fie incompatibil cu firmware-ul 90.06 Nu am avut cunoștințele necesare pentru a vă modifica versiunea de firmware, poate Coulomb o va face. MPPT-ul original funcționează bine cu lumina directă a soarelui... numai dacă nu, atunci modificarea mea este relevantă. Captura mea de ecran este o zi înnorată cu siguranță fără lumină directă a soarelui. And the inverter of the person upstairs, that is easun smw8k..the same with mine...why is compatible?
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.