So, friends of the channel, how are you? Is it possible to set up an offgrid solar energy system and remove the battery bank and put a bank of super capacitors in its place? Will it work correctly? What are the limitations? What do I need to do? This is what we do I will now show you in the video this question came up in the last video when we were showing super capacitors in the offgrid system, the care and benefits, so our subscribed friend asked Tarcísio, do I want to do the offgrid system without a battery the way you taught and using super capacitors? I don't want to put anything in the battery, just super capacitors, how should I proceed and what are the limits? 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guys, let's answer then if we can replace the battery bank with this super capacitor bank as you already know made a video here on the channel a system a video no some videos about the Off Grid system without battery a lot of people learned it replicated it improved the system it is fully functional it has some power limitations you can't use it all and also autonomy during the day are you saving energy as you don't have a battery, it hasn't been accumulated and energy at night is unfeasible Because you'll be using a source to recharge the system without a solar panel you won't generate savings These are the main topics we talked about in that offgrid system without batteries And then adapting the offgrid system without batteries that is there with the source, I'm going to remove the battery bank and I'm going to put in the super capacitor, it works just like that, just like that, it doesn't work I'll show you the al Grid system here, it's assembled complete with the capacitor bank with the battery bank, solar panels, everything ready, just the auxiliary source , which was there a while ago, I removed it here so we can do some classes and then I'll resume it, including making an improvement on this issue of the source, but at the moment it's out of it here, if in this case At the moment, with the system working, I put a low load here, I turned off the loads, I just put a small lamp here 36 we for us to do a test, it's here fully functional on the battery bank at this moment there is no more solar production, the capacitors are charged if I came here to the general circuit breaker of the battery bank 200 aamp and 24 v Life p 4 4000 few kW hour of autonomy my battery bank in this 24 v system a good autonomy I can use a lot of things for a long time if I turn it off The battery bank will only work here with this capacitor pack and the energy coming in from the solar plate, yes, imagine I'm here with 1000 W on the board in one controller plus 1000 W on the other controller's board, I'm here with a small load of 500 w eh consuming here in the inverter my battery bank is fully charged everything works here if I come here and turn off the battery bank circuit breaker the controllers already have the reference it is already working with the pack in series with the 24 v and it will work normally and as long as there is solar production here, for example, 2000 w is pulling 500, it will guarantee that 500 here, it will still be left over, it has dropped, it has reached 500, it will still remain there, it has dropped from 500, what will happen, it will start to discharge the pack of capacitor And that's where the danger lies If it starts to discharge I'm going to lose the reference, the controllers can lower its voltage from 24 to 12 because this P voltage drops and then it could damage the system for use without the battery bank only with a capacitor What would I have to do I would have to place a source on this bus here at the system voltage, my system here 24 V, then I would place a source adjusted to that voltage in the system, generally what about 25.2 25.6 V would leave it with a very low voltage just to give reference here in the Capacitor Packs to keep charged if there was no solar production then there is the issue of the power of the source your load will have to be calculated according to your load You have a load of 300 400 w 500 how are you going to put a source here in my case here a 24 v system I was going to put at least a 30 Amp 24 v 30 Amp a source that can really handle a good source because if it runs out when there is a shadow or rain Then, if solar production stopped, the load would not exceed the power of the source, the load would be around 500, the 30 Amp 24 v source would handle 720 w, so at that moment it would be seeking energy from the utility company to power the system at the time the sun started to shine. new the boards would power the system the voltage that comes from the controllers is generally higher that is why the source has to be with the lowest reference voltage if you adjusted your controllers to 27 v the source has to be there at 25 20 and little because it will always use the highest voltage if the board has a higher one, it is always the board when it goes down that it reaches 25 then it will start pulling from the source the source will be just a reserve and it will be tied to power The source is 720 wo the system pulling there is a maximum of 500 and you will be able to use it during the day with solar production without the battery saving energy of course the sun is gone if you have no more savings the source will start consuming for you supply And then it is a relationship of greater consumption because the source to supply you 720 it will already spend a little more then 780 800 so without the solar panel helping, in fact as the main thing it is not worth it in quotes But come on and if you just put it the power supply without the capacitor pack You may have a small problem the high quality power supply will be an advantage but the supercapacitor can handle the big peaks Not every power supply can handle heavier starting peaks so the power supply may trip So this super capacitor it will guarantee that quality that the battery banks provide at peak times, it holds the starting peaks and will help this source a lot, in fact it will help with the peaks and leaving the use of the source only as a last resort when the solar voltage really drop than reach the minimum level where you left it adjusted And then where it will use that energy then you can mention Ah, but there was no solar energy, there was no shortage, the dealership will turn it off guys Not everything is rosy, yes, if you are using a system without a battery that uses the source as a reference and everything was missing shadow there was a lack of power from the dealership the sun was missing the dealership was missing you will want what will produce go as there is no battery bank not accumulated So you have to consider what you want There are people who don't want to spend on a battery bank, they want to set up a little system with just the power supply there during the day, it's powering a computer, a router, some fans, everything and they know they won't have that problem, at least with the dealership, there will only be a few moments, but there will be a backup dealership there for a few minutes and the day will go through with excellent savings, there will be a reduction in the energy bill, he doesn't want to invest in batteries, he doesn't want to have them there for the moment of blackout which is like this and it works like there are hundreds of videos that we receive here on the offgrid channel without batteries now coming here for a little question about safety see you have to think about a few things you are going to set up the system now purely with the capacitor bank and the Source forget the battery bank you have to remember that during the first assembly you will charge the capacitor bank Before connecting the inverter Before connecting the solar panels you will leave the source with the capacitor bank connected loaded to give the reference only then will you turn on the photovoltaic panels if the source is weak on the day your system turns off completely discharge completely When you turn on a source if it is a generic switched source it will draw so much current the capacitor that it will recognize as short Sometimes the power supply doesn't even turn on these more powerful branded power supplies that we use, it can handle the pressure Sometimes a 30 Amp power supply, even this one pulling some peaks, it gradually increases the voltage and that will do the trick, there's another thing you ask, ah, when it completely discharges this bank of capacitors, there is a lack of reference voltage, there is a protection mechanism, yes, in the first video of the bank of the offgrid system without batteries, we already showed that we I would place a relay there you have to know what it is in the system there I explained this relay it has a supply coil it can be 12 24 v 36 then it will depend on your system And then we would place it here in the supply, for example the bus this coil while he had the reference voltage here on the controllers he had a switch allowing the solar panels to send energy to the controllers it could be a relay with one contact or with two if you have two controllers when it turned off the voltage was missing this relay the coil stops being powered and it disconnects the input here one of the wires of each string if it is a two contact relay you put a contact for the positive of one string a contact for the positive of another string And then it was automatically missing the reference voltage here the relay disconnects a wire from each string, preventing this energy from the solar plate from reaching the controller, which will not have a reference at that moment This is the protection system that I talked about at the end of the class, most people didn't watch it and asked, will it burn the controller because when there is a power outage from the source there will be no reference attention, but you forgot to watch the video until the end with my raw food and you didn't see that I talked about the relay protection that when you turn it off here the relay will disconnect a of the string wires, not letting attention pass to the controllers So it will burn with what soul But this is a class that is just there Recalling here some points for you about this little system I will turn it off here just so you can check low consumption 36 V capacitor bank charged here you have 26.5 V with the battery bank connected And I'm going to disconnect the Live po4 battery bank from the system from the moment I turned it off attention here the inverter is pulling 36 v voltage is dropping to 24.9 keep using it discharging The capacitor bank, if I had the source connected here at the dealership, this source would be ready, it arrived at 24, the source would start taking over the load, I won't let it drop too much, not when it arrives at 22 23, otherwise the inverter will beep here, it arrived at 23 I I'm going to reconnect the battery bank to recharge the capacitors. If the source arrived here at a lower voltage, I could program it to leave it . the source would start to disappear, it would stay at that low consumption current of 0.7 Amps and then when it reached the voltage of 24 there that it was programmed for, it would start to disappear, if it wasn't there it would discharge until the inverter turned off, which is not the case. cool for this system that 's why to use it with a capacitor bank without batteries you have to have a source maintaining the reference and the old offgrid system without batteries the principle was the source maintaining the voltage, preferably you can use it at night, don't you? You will be replacing a higher consumption source , which is a utility source, which will lose energy in the conversion and will end up spending more during the day. send something so that when the voltage drops, the energy from the solar panels drops, it will take on a certain load here, if you want . a 24 v 30 Amp that guarantees 720 you get a 24 v for 50 Amp then you will have a source guaranteeing that even without any sun it reaches more than 1000 w to maintain your system without turning off anything beauty this was one of the Doubts, I know we talked a lot more, but it's good that you 're remembering some principles of this type of connection, just one more very important detail so that you don't Generate the comments that were generated in that video, there are people who don't understand anything and want to fear how If you knew everything, there were people who said Oh, but then it's not off Grid anymore, it's an Ingrid or an ongrid because you're touching the utility network, if you turned on the source then you used energy from the utility network, it's a Grid No, it's not a Grid. needs approval on Grid off Grid is not in the simple fact of disconnected from the grid it is in the fact on Grid is in the fact that you push energy towards the utility you will generate and send this current you will raise the voltage of your internal system external system 120 V you will place inverters in a Grid where you will increase the voltage of your internal system by pushing current, raising the internal current and voltage and sending it to the dealership And then the clock will count these credits in the offgrid system that is disconnected from the grid you can use a source to use a charge from your bank, like in hybrid off-grid inverters that have a source, sometimes it charges from the solar plate or it uses the battery bank and sometimes it uses the dealership to charge the bank and do a bypass pass in the back send directly from the dealership to feed a load without using one or the other and it's off Grid I'm not going to discuss these details of on off here in this video there are two top videos here on the channel on the subject if you have any questions about this subject watch from the channel here so you won't make mistakes, you won't be embarrassed in the video, beauty
