How to convert ON Grid solar system to Hybrid Solar System
Under the PM Surya Ghar Free Electricity Scheme, many people must have installed on-grid solar systems on the roof of their houses, but there are some disadvantages of installing on-grid solar systems. There are some advantages. So if we talk about the disadvantages here, then this system works only when there is electricity at your home. If there is no grid supply at your home, then this system will also not work and you will not get any benefit from the solar panel.
Talking about the benefits, there is no use of battery in this, so your battery expenses are saved here. But many people do not know that it does not work after the power goes off and they knowingly or unknowingly get this system installed. After that, when they do not get its benefit, then they think. How can we convert this on-grade system into off-grade, that is, you can keep getting electricity from your solar panel even after the power goes off.
ON Grid & OFF Grid Solar Inverter VOC
So in today’s post, you will be told how you can convert your on-grid system into a Hybrid Solar System. There can be many different ways of doing this. The first and easiest way is to remove the solar panels that you have installed on your on-grade system from the on-grade system and buy a separate off-grade inverter and connect it to it.
You will have to connect the solar panels according to that off-grade inverter because the VOC of off-grade inverter is very low. And the VOC of on-grade system is very high. Here, all the panels installed in the on-grade system are installed in series. However, if you have a large system, then different strings are made there. Many solar panels are connected in series and then connected in parallel.
That is why their VOC becomes very high. And here if we talk about on grid inverter, which we call Grid Tie inverter, then its VOC is also very high. These inverters can support from 160 volts to 1000 volts. But if we talk about off grid system, then if you have an inverter with four batteries and MPPT technology, then it can support a maximum VOC of 220 volts only.
If you go for transformer less technology, the VOC range goes up to 400 or 450v, so you can install up to 9 solar panels in series on them. Here, if you want to convert your on grid system into off grid, you will need a DC change over. So that you can shift all your solar panels to your other inverter with the help of DC change over, for this you will have to choose the right inverter.
How to convert ON Grid solar system to Hybrid Solar System
First of all you have to find out the VOC of your system. Find out the VOC of all the panels you have installed. If you have a 500w panel installed, then it has a VOC of 50 volts. In such a case, if you have installed 10 panels in series. That means there is a 5Kw system. 10 panels are installed in series. So the VOC of your system becomes 500v. So here now you get this much VOC in the transformer less technology in the market or in the inverter with more battery bank, so with the help of DC change over, you can connect your panel directly to that inverter and after the electricity goes off, you can connect those panels to that off grade inverter with the help of DC change over. As you are being shown inside the photo,
That’s how this system works. But it costs you a lot. Because firstly you have to buy an inverter that supports more battery. Also you have to buy that many batteries.
Apart from this, there is another way. Here, battery less inverters of many companies are also available in the market. Battery less inverters are also coming in transformer less technology. So that you can run the load of your house directly from the solar panel even without a battery. For this, if we talk about an example smart kranti plus inverter Battery less inverter is coming now. On which you can connect a series of about 15 panels directly.
How to convert ON Grid solar system to OFF grid without battery
It will run the load of your house directly without any battery. So here Smartron company has different models like 5kva, 8kva and 10kva. Before buying these models, you have to take special care of some things like for these inverters the voltage coming from your solar panel should be at least 400v i.e. at least 8 solar panels should be in series.
There will be 8 panels of 500w each and only then you will get 400v power from the solar panel but here instead of 8 panels, you will have to install 10 panels in series on it.
Then you will get around 500 volts of electricity from your solar panel all the time. Installing 10 solar panels in series means that you need a 5 Kw system. That means to use this inverter, you will have to install at least 5 Kw solar panels.
Smarten Kranti+ 5KVA
You can install more than that as per the model capacity. For example, here you are buying a 5kva inverter. On which you get the capacity to run a load of up to 4200 watts, so if you install a 5kw panel on it, then it will run your load of up to 4200 watts very easily during peak time.
Smarten Kranti+ 8KVA
If you buy an 8kva inverter, then it can run a load of up to 6500 watts. So here you will have to install at least 8Kw solar panels on it, then you will get a supply of up to 6500 watts during peak time.
Smarten Kranti+ 10KVA
Similarly, on top of 10Kva you get a load capacity of 8 kwatt, so here you will have to install solar panels of at least 12kw. Their maximum input voltage range here is 750v. That means you can connect 15 panels in series on top of this. If you want to do more than that at a time, then you will have to install a series of 15-15 only. If you install a series of 15-15, then you will be able to install panels of up to 15 Kw on a 10 Kva inverter, but the maximum capacity given here is.
It is 10Kw above 5Kva. That means a 10Kw panel can be installed on a 5Kva inverter. You can install solar panels of up to 20Kw on an 8Kva inverter. Which is quite a lot. So, whoever has an on-grade system of up to 20kw should buy an 8Kva inverter. Similarly, a 10Kva one can install panels of up to 35Kw. That means you can connect a 35Kw solar system with a 10Kva inverter.
Here the range of their low solar cut voltage is 300 volts. That means if you have installed solar panels and the electricity coming from them or in other words the voltage range goes below 300 volts, the supply of your solar panel will get disconnected and your load will stop working, so keep these things in special attention.
You have to purchase an inverter, so you can do this work by purchasing that inverter as per your requirement and load capacity. There also you have to connect all your panels with the inverter of Smarton company with the help of DC change over. And you will have to run your home load through this inverter, so in this way you can convert your on grade system into off grade.
Apart from this, the best way is to move towards a hybrid system. Hybrid inverters have arrived in the market which work both as on grid and off grid. So you can convert your on grid system directly into hybrid. So that you will get the benefit of on grid as well as off grid.
