Agreed and we'll understand the differences, all of our SMA SI systems utilize both dc charging and AC coupled charging.![]()
| Roland Shackelford President / Owner NABCEP PVIP #091209-162 Office 808.775.7410 Mobile 808.938.9239 Power Solutions for Generations Renewable Energy Services, Inc. |
" Where there is integrity, there will be trust. Where there is trust, there will be an atmosphere for success." - Sadhguru On Oct 28, 2023, at 10:17 AM, William Miller via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:
Friends: I am starting to get the impression that there is a diversion on the understanding of the definition of AC coupling within the industry. I think this definition needs to be clarified. Below is a diagram of what I understand is a DC coupled system (I hope these diagrams come through): <image003.png>
A battery inverter that receives AC power into an AC input port is not AC coupled. Here is an AC-coupled system: <image005.png>
What makes AC-Coupled systems unique are the problems presented by sending power backwards through a battery inverter. This is not how battery inverters were originally designed to operate. These systems require careful consideration to avoid battery overcharging. Do we have consensus on this definition? William Miller Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985
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