Higgens Posted August 8 Share Posted August 8 I have a 5KW Conderenergy Inverter with 5Kwh SVolt battery and 3600 watt in pannels. My inverter would be running low load until the the 2kw geyer element kicks in. The inverter would then start pulling more power from the pannels as required with increased load. So @12pm on a clear day I noticed that the load would be around 2.2kw and the inverter would draw only about 1.6kw from the pannels and the rest its drawing from the battery. It I interrupt the load for say a minute (swithc off geyser and switch on a minute later), the inverter would then suddenly start pulling more power from the pannels, around 2.5kw and nothing from the batteries. It would in fact draw enough from the panels to carry the load and even charge the battery a little bit. It seems by disrupting the load a bit sort of does a reset on the inverter so that it draws the correct amount of power from the panels. Would anyone know what this happens? Quote Link to comment Share on other sites More sharing options...
hnmdiep Posted August 9 Share Posted August 9 I am also experiencing the same situation with the goodwe 5048D-ES, and it seems that this is due to the connection between the solar panels not being really good. Quote Link to comment Share on other sites More sharing options...
TaliaB Posted August 9 Share Posted August 9 19 hours ago, Higgens said: I have a 5KW Conderenergy Inverter with 5Kwh SVolt battery and 3600 watt in pannels. My inverter would be running low load until the the 2kw geyer element kicks in. The inverter would then start pulling more power from the pannels as required with increased load. So @12pm on a clear day I noticed that the load would be around 2.2kw and the inverter would draw only about 1.6kw from the pannels and the rest its drawing from the battery. It I interrupt the load for say a minute (swithc off geyser and switch on a minute later), the inverter would then suddenly start pulling more power from the pannels, around 2.5kw and nothing from the batteries. It would in fact draw enough from the panels to carry the load and even charge the battery a little bit. It seems by disrupting the load a bit sort of does a reset on the inverter so that it draws the correct amount of power from the panels. Would anyone know what this happens? What is your solar array configuration connection are they series string or series/ parallel. Please provide your solar panel specs and how many strings and configuration. There is a reason the Mppt is limiting the power from the array. Do you have any type of monotoring software so you can post pictures of mppt current voltage and the temperature of the inverter. 5 hours ago, hnmdiep said: I am also experiencing the same situation with the goodwe 5048D-ES, and it seems that this is due to the connection between the solar panels not being really good. The statement above is a tad confusing the solar panels are either connected or not faults on the installation yes but that is a long list. Quote Link to comment Share on other sites More sharing options...
Bobster. Posted August 9 Share Posted August 9 (edited) 9 hours ago, hnmdiep said: I am also experiencing the same situation with the goodwe 5048D-ES, and it seems that this is due to the connection between the solar panels not being really good. Do you mean that it only pulls enough from the panels to meet the load? All the time? Or once the battery is charged? Please confirm which mode you are using, and the firmware version on the inverter. Edited August 9 by Bobster. Quote Link to comment Share on other sites More sharing options...
hnmdiep Posted August 9 Share Posted August 9 (edited) Không phải. Trong trường hợp của tôi, tôi gặp vấn đề với giắc cắm MC4. Nó tiếp xúc kém, dẫn đến việc nó không thể kéo dòng điện "Ampe" từ pin đến bộ biến tần mặc dù điện áp Volts vẫn đủ. Tôi đã đo điện trở từ tấm pin mặt trời tại vị trí giắc cắm MC 4 kết nối bộ biến tần vào ban đêm và thấy rằng nó được cách điện hoàn toàn -> có vấn đề với kết nối giữa các tấm pin mặt trời. Tôi mất 4 ngày để tìm ra vấn đề và giải quyết, goodwe VN đã thử nghiệm và đánh giá bộ biến tần hoạt động tốt Edited August 9 by hnmdiep Quote Link to comment Share on other sites More sharing options...
Higgens Posted August 9 Author Share Posted August 9 4 hours ago, TaliaB said: What is your solar array configuration connection are they series string or series/ parallel. Please provide your solar panel specs and how many strings and configuration. There is a reason the Mppt is limiting the power from the array. Do you have any type of monotoring software so you can post pictures of mppt current voltage and the temperature of the inverter. Ive got 8 x 460 panels configured in series so configured for max volts. (360Volts max from the panels) Pmax - 460W Max VMP 37V Max IMP 12.44 A Open VOC 45.51V Isc 13.31A Inverter. PV Input Power: 6200W Nominal DC Voltage/Maximum DC Voltage: 360VDC/500VDC Start-up Voltage / Initial Feeding Voltage: 60VDC/90VDC MPPT Voltage Range: 60VDC to 450VDC Maximum Input Current: 1/18AMaximum PV Input Power: 6200W I am still working to setup my monitoring software, (need to get the wifi dongle) however it was I checked it again today and this time it was pulling 2.3kw on a load of 2kw. Volts from the MPPT was around 270v and amps running at 16amps on the MPPT. What I do wonder is if its dropping watts and volts in order to compensate for Amps as the MPPT can max do 18 amps and the geyser element especiallty draws a lot of Amps. Thus the inverter has to compensate and also use the battery to assist when needed. Quote Link to comment Share on other sites More sharing options...
TaliaB Posted August 9 Share Posted August 9 31 minutes ago, Higgens said: Volts from the MPPT was around 270v and amps running at 16amps on the MPPT. I can understand the 270v( 37v x 8=296v) so yes they are series connected but the 16amps is not possible as your solar panels can max produce 12.44A and maybe 13A when there is clouds but you will rarely go so high considering the time of the year. I think the inverter readout has an error% if you are seeing 16A. Your solar array can produce max power of 3680w during summer way below the maximum of your mppt. Let us assume that your Vmp is 270v and your Imp is at 11A then you should be seeing 2970w from your solar array way below the inverter max. Maybe your total load( house loads+ geyser) is exceeding the solar output hence the reason the inverter uses the battery to supplement the shortfall. If it is a 3000w geyser element then it makes sense that the inverter will use the battery to supplement for the solar shortfall. The behavior might get better as we move towards summer and your solar array produces more power. Scorp007 1 Quote Link to comment Share on other sites More sharing options...
Higgens Posted August 12 Author Share Posted August 12 On 2024/08/09 at 2:54 PM, TaliaB said: I can understand the 270v( 37v x 8=296v) so yes they are series connected but the 16amps is not possible as your solar panels can max produce 12.44A and maybe 13A when there is clouds but you will rarely go so high considering the time of the year. I think the inverter readout has an error% if you are seeing 16A. Your solar array can produce max power of 3680w during summer way below the maximum of your mppt. Let us assume that your Vmp is 270v and your Imp is at 11A then you should be seeing 2970w from your solar array way below the inverter max. Maybe your total load( house loads+ geyser) is exceeding the solar output hence the reason the inverter uses the battery to supplement the shortfall. If it is a 3000w geyser element then it makes sense that the inverter will use the battery to supplement for the solar shortfall. The behavior might get better as we move towards summer and your solar array produces more power. Quote Link to comment Share on other sites More sharing options...
Higgens Posted August 12 Author Share Posted August 12 Just now, Higgens said: Just now, Higgens said: the 16amps is not possible as your solar panels can max produce 12.44A and maybe 13A You're correct. That was just the reading showing what it was drawimg from the battery at that moment and not from the panels. It fluctuates as Inverter requires. 2 minutes ago, Higgens said: 2 minutes ago, Higgens said: Maybe your total load( house loads+ geyser) is exceeding the solar output hence the reason the inverter uses the battery to supplement the shortfall. There is enough solar to cover the load. As I have stated, If the load kicks in at 2kw (from 2kw geyser element) for example. The inverter would pull up to about 1.6 kw from the solar. When I interrupt the load from the geyser element for about 30sec, and putt it back on, the inverter would then suddenly start pulling 2.3 to 2.5 kw from the pannels. As if I did a reset on the solar charger. It would then happily stay at that level, sun allowing and also have capacity to charge the battery a bit as well. I think its perhaps a glitch in the firmware of the Inverter perhaps. What I have now noticed is that is does not do this every time. Sometimes it would draw enough from the pannels without me having to interrupt the load. Quote Link to comment Share on other sites More sharing options...
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