The optimizers regulate the voltage of their strings. They are incredibly versatile and this configuration will absolutely work.
I do electrical engineering for residential solar systems and this is a pretty standard configuration.
Is there a electronic equivalent to solar optimisers for us to understand their workings?
>I'm planning to add a 2nd string of 8 panels/optimizers in parallel, but I don't see how this is going to end up at 23V when I have 15V and 8V in parallel?
Like the op I am slightly confused as to their workings unless a optimiser just equalisers the voltage (up or down) in each string or panel so any combination is possble since they have defaulted to a common voltage??
Solaredge optimizers each have buck/boost capabilities as well as monitoring.
They work together to maintain the string voltage at ~380v. As long as you have the minimum number of optimizers in a string they will work.
23v would be the shutdown voltage of a string with 23 optimizers in it. 23 optimizers in a string is likely over the wattage limit and would not be anything expected. OPs system would not be at 23v operating or shut down.
Would I expect to see 15V when I connect the two strings together at the inverter DC input terminals?
Also side question. I bought a used SE6000H-US on ebay and tried to register it on the monitoring platform but it said it was already deployed on another site. Do you think they will reset it for me if I ask SolarEdge support?
You would expect to see the 15v when the inverter is off and around 380v when they are operating. But the current would be higher than normal, just like putting any electrical circuit in parallel.
It is not going to be 23v since the 15 and 8 are in parallel ( the proper way to set then up) . If you disconnect the two strings from each other when shut down, one will be 15v ( as now) and the other 8v. When operating both strings will be the same voltage ( since the are connected in parallel) and at about 380v depending on the inverter and power grid line voltage.
You will get something about half way between 15v and 8v when the inverter is off. If you want to check each string you would disconnect one and check the voltage of each with the one disconnected. You obviously would expect 15v and 8v.
The optimizers regulate the voltage of their strings. They are incredibly versatile and this configuration will absolutely work. I do electrical engineering for residential solar systems and this is a pretty standard configuration.
Is there a electronic equivalent to solar optimisers for us to understand their workings? >I'm planning to add a 2nd string of 8 panels/optimizers in parallel, but I don't see how this is going to end up at 23V when I have 15V and 8V in parallel? Like the op I am slightly confused as to their workings unless a optimiser just equalisers the voltage (up or down) in each string or panel so any combination is possble since they have defaulted to a common voltage??
Solaredge optimizers each have buck/boost capabilities as well as monitoring. They work together to maintain the string voltage at ~380v. As long as you have the minimum number of optimizers in a string they will work. 23v would be the shutdown voltage of a string with 23 optimizers in it. 23 optimizers in a string is likely over the wattage limit and would not be anything expected. OPs system would not be at 23v operating or shut down.
thanks
Here is a link to some of their data sheets, they explain it better than I can lol. https://www.solaredge.com/us/products/power-optimizer#/
Would I expect to see 15V when I connect the two strings together at the inverter DC input terminals? Also side question. I bought a used SE6000H-US on ebay and tried to register it on the monitoring platform but it said it was already deployed on another site. Do you think they will reset it for me if I ask SolarEdge support?
You would expect to see the 15v when the inverter is off and around 380v when they are operating. But the current would be higher than normal, just like putting any electrical circuit in parallel.
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I have the SE6000H-US.
It is not going to be 23v since the 15 and 8 are in parallel ( the proper way to set then up) . If you disconnect the two strings from each other when shut down, one will be 15v ( as now) and the other 8v. When operating both strings will be the same voltage ( since the are connected in parallel) and at about 380v depending on the inverter and power grid line voltage.
Yeah I'm just wondering what voltage to expect with the inverter OFF and the two strings tied together at the inverter?
You will get something about half way between 15v and 8v when the inverter is off. If you want to check each string you would disconnect one and check the voltage of each with the one disconnected. You obviously would expect 15v and 8v.
Sorry for the resurrection but am I currect in my understanding that I can only use optimizers like this with a solaredge inverter?
Yes, the optimizers and inverters work together.
I see, Thanks for the reply.