January 15, 20233 yr 4 hours ago, Coulomb said: ? Același firmware corectat sau din fabrică și-a schimbat brusc comportamentul? Sau spui că ai instalat noul firmware și are o tensiune fotovoltaică minimă de 115 V acum? BTW, acesta este un firmware Axpert Max 1 '2809 de 11 kW, iar acesta este un fir de 8 kW. În cazul în care alții încearcă să-l folosească pe mașinile lor de 8 kW. Edit: Mi se pare că tensiunea minimă MPPT este încă de 90 V. Editarea 2: Cu toate acestea, există acum un test suplimentar pentru ca tensiunea solară să fie sub 250 V înainte de a forța tensiunea PV în jos. S-ar putea ca în sfârșit să fi rezolvat problema! Hi. What can tell me about Deye simgle phase 5kw or 8kw? Comparison with Easun about efficiency, self consumption or others... thanks
January 16, 20233 yr 7 hours ago, add1c7ed55 said: What can tell me about Deye single phase 5kw or 8kw? Sorry, I know nothing about non-Voltronic (Axpert) brands.
January 17, 20233 yr On 2023/01/15 at 3:21 PM, Coulomb said: ? The same patched or factory firmware suddenly changed behaviour? Or you're saying you've installed the new firmware and it has a minimum PV voltage of 115 V now? BTW, that's an 11 kW Axpert Max 1 '2809 firmware, and this is an 8 kW thread. In case others attempt to use it on their 8 kW machines. Edit: It looks to me that the minimum MPPT voltage is still 90 V. Edit 2: However, there is now an additional test for the solar voltage to be below 250 V before they force the PV voltage down. They may finally have addressed the problem! Hello columb the older firmware 57.60 the only difference I found is that it would stick at 115v instead of 90v which it did on the original firmware it was shipped with. After looking at it for a couple days although I think it may be a little too early to tell still it does seem much improved. It stayed at 100v until midday yesterday but it was extremely dark and miserable. Besides there was only 0.5a so not a huge amount to gain. Once the sun did start to come out it shot up to around 290v and stayed there pretty much without fault for a few hours until the sun started leave my panels. See photo 1 Today, bit of odd behaviour on mppt1 regarding amps comparing it to mppt2 but I shall continue to monitor and get back, like I said a bit too early to judge. Photo 2
January 20, 20233 yr Hello can i use this update for my inverter Edited January 20, 20233 yr by hussam hajjar
January 21, 20233 yr On 2023/01/20 at 2:29 AM, hussam hajjar said: Hello can i use this update for my inverter No, the update I supplied is for the 11kw max 1 ONLY
January 22, 20233 yr Based on what I've witnessed over the past couple cloudy days I would consider this 95% fixed. It still sits at around 100v longer than I would say is perfect. However it does get going much quicker without missing out on too much power. I would say that over the course of the day I'm loosing no more than 2-300wh. Not sure if this fix can be translated into the 8kw model but that is beyond my scope of knowledge.
January 22, 20233 yr Hi there, I have the voltronic axpert max (same as voltronic) here in the UK and having the same issue. I have 2x inverters in parallel and both stuck at 90V One inverter has 440VOC string and the other has 270Voc string. I have noticed isolating the solar and re-energising makes the MPPT kick in at full system voltage. I have no experience with patching firmware but I would expect that this is the issue. (Hence finding this thread). What's the best solution for this please, I'm half tempted to place a MPPT regulator directly to my batteries!!
January 22, 20233 yr 48 minutes ago, Mowbray85 said: Hi there, I have the voltronic axpert max (same as voltronic) here in the UK and having the same issue. I have 2x inverters in parallel and both stuck at 90V One inverter has 440VOC string and the other has 270Voc string. I have noticed isolating the solar and re-energising makes the MPPT kick in at full system voltage. I have no experience with patching firmware but I would expect that this is the issue. (Hence finding this thread). What's the best solution for this please, I'm half tempted to place a MPPT regulator directly to my batteries!! What model inverter do you have? 8kw 11kw? Removable display?
January 22, 20233 yr 1 minute ago, JDAVIES94 said: What model inverter do you have? 8kw 11kw? Removable display? I have the voltronic (voltacon badged) axpert max 7.2kw with removable display
January 31, 20233 yr I'm really happy with this latest firmware update still not perfect but it's massively better than the shipped firmware. Anyway these fixes could be ported to the other inverters? @Coulomb @Georg594
February 1, 20233 yr 13 hours ago, JDAVIES94 said: these fixes could be ported to the other inverters? Yes, when firmware update files are available. And of course time.
February 1, 20233 yr I have contacted them regarding a fixed firmware for the 8kw would either @Coulomb@Georg594 be able to send me a photo of your label and firmware it shipped with, Ideally a photo? And I shall try get a fixed Firmware for yours too
February 2, 20233 yr 22 hours ago, JDAVIES94 said: would either @Coulomb@Georg594 be able to send me a photo of your label I have a pair of old Axpert MKS 1s. 5k-48. Nothing like an Axpert Max. My interest in Maxs is purely academic.
February 2, 20233 yr 2 hours ago, Coulomb said: I have a pair of old Axpert MKS 1s. 5k-48. Nothing like an Axpert Max. My interest in Maxs is purely academic. Hi Coulomb, i have a little problem that now i found. With the 92.05 firnware that u modified, i cant charge the batteries more that 80A current, even if i have more pv production, stuck on 80A, if i charge from grid, no problem, charges with 120A, from solar cant. Do u think its some firmware bug ? Can check pls ?
February 3, 20233 yr 19 hours ago, add1c7ed55 said: With the 92.05 firmware that u modified... i cant charge the batteries more that 80A current, even if i have more pv production, stuck on 80A, I checked the changes again, they are as per the text file, and none should have any effect on solar charge current. There are extra constraints for solar charging, nothing to do with the patch. For example, each MPPT is limited to 18 A, and the two MPPTs together are limited to a combined 30 A (at the panel side, not the battery side). Plus of course, it's hard to know what power panels are capable of providing, given their temperature, shading, strength of the sun, clouds, and so on. It certainly could be some glitch in the firmware, but it would be hard to find. All the MPPT functions that I've looked at in the various MAX firmwares have been identical, though I did not check the MPPT interrupt function. It's a bit of a pain, as they moved code around significantly in one of the versions. Other MAX users (of patched or factory firmware): Do you notice this limitation?
February 3, 20233 yr On 2023/02/02 at 1:19 PM, Coulomb said: I have a pair of old Axpert MKS 1s. 5k-48. Nothing like an Axpert Max. My interest in Maxs is purely academic. No Problems, Any one on here willing to share their label and firmware from factory. Ideally MPP Solar Branded. for an 8kw
February 4, 20233 yr Pe 03.02.2023 la 13:38, Coulomb a spus: Am verificat din nou modificări, sunt conform fișierului text și niciuna nu ar trebui să aibă niciun efect asupra curentului de încărcare solară. Există constrângeri suplimentare pentru încărcarea solară, nimic de-a face cu patch-ul. De exemplu, fiecare MPPT este limitat la 18 A, iar cele două MPPT împreună sunt limitate la 30 A combinate (pe partea panoului, nu pe partea bateriei). În plus, desigur, este greu de știut ce sunt capabile să ofere panourile de alimentare, având în vedere temperatura, umbrirea, puterea soarelui, norii și așa mai departe. Cu siguranță ar putea fi o eroare în firmware, dar ar fi greu de găsit. Toate funcțiile MPPT pe care le-am analizat în diferite firmware-uri MAX au fost identice, deși nu am verificat funcția de întrerupere MPPT. Este puțin dur, deoarece au mutat codul în mod semnificativ într-una dintre versiuni. Alți utilizatori MAX (de firmware corecționat sau din fabrică): observați această limitare? I will retest the voltage to see if will charge when the float is higher. I saw another little problem, i have some tic tic sounds , like a little short circuit 1 time for 3/4 seconds, from the convertor from photo, only when is in bypass from grid. If i close the grid, the sound is off. Why makes this ? I have photo and video.
February 4, 20233 yr Author In the datasheet of the axpert 8kw there is explained that grid to battery charge is up to 120A and solar to battery up to 80A And there is a limit for each mppt of 4000w .
February 4, 20233 yr 1 hour ago, add1c7ed55 said: I saw another little problem, i have some tic tic sounds , like a little short circuit 1 time for 3/4 seconds, from the convertor from photo, This sounds familiar. Sorry I don't have time to search for it now, but it's worth searching carefully.
February 4, 20233 yr 4 hours ago, Coulomb said: Sună familiar. Îmi pare rău că nu am timp să-l caut acum, dar merită căutat cu atenție. Do u think its a big problem ?
February 4, 20233 yr 4 hours ago, Coulomb said: This sounds familiar. Sorry I don't have time to search for it now, but it's worth searching carefully. U know this sound ?
February 4, 20233 yr 8 hours ago, Georg594 said: In the datasheet of the axpert 8kw there is explained that grid to battery charge is up to 120A and solar to battery up to 80A And there is a limit for each mppt of 4000w . Look pls, max solar charge 120A
February 5, 20233 yr Author The description seems to be wrong, i bought an Easun and in the ebay description was like your screenshot, but in the pictures there it was explained that the 120A are combined. Or maybe did you really have better hardware in your inverter? Did you get 120A solar charge with original firmware?
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