erik.calco
Solar Badger
I've been running my main system with 2 panels per string for a couple years now. One thing we learn as we're building a system in series vs parallel is that in-series has a bigger negative impact from shading.
But, today is the first time I discovered how big the impact was as I received a Bluetti AC200P today and hooked up 2x320W spare panels I had collecting dust. Monitored output as the sun moved, and over time, less and less shade. But, when one panel was completely sunny, and the other nearly completely shadow, the output was only 90W. Hmmm....
So, I disconnected the shady panel running just one, and the output immediately DOUBLED! I would of been better off running 1 panel until the sun cleared the 2nd panel.
Now that the sun is complete on both panels, put them back in series, and immediately shot up to 500W. The sun still is off to the side, so the shortage now is just due to sun angle.
But, today is the first time I discovered how big the impact was as I received a Bluetti AC200P today and hooked up 2x320W spare panels I had collecting dust. Monitored output as the sun moved, and over time, less and less shade. But, when one panel was completely sunny, and the other nearly completely shadow, the output was only 90W. Hmmm....
So, I disconnected the shady panel running just one, and the output immediately DOUBLED! I would of been better off running 1 panel until the sun cleared the 2nd panel.
Now that the sun is complete on both panels, put them back in series, and immediately shot up to 500W. The sun still is off to the side, so the shortage now is just due to sun angle.