Quote:
Originally Posted by MPaulHolmes
I found a bug in the split phase code. I hooked up ONLY the solar panels straight to the inverter, and everything worked great. The higher the load, the 500v just sags down until the power is sufficient (running the mill sagged the solar array down to 475v), and then the inverter just takes the 475v and puts out 120/240. As long as the solar is above 340v, it can do 120v/240v out. Now, here's the bug!
I was not actively forcing the 2 120v to be balanced. So, now I need to monitor the AC output voltages, and then change the duty of the middle channel so that it stays 120 and 120. The mill caused it to be 110 130. So, all you have to do is, say HEY! ONE IS 130, change the 50% duty to 45% or whatever so that the 110 gets pushed up and the 130 gets pushed down.
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First - can I get a copy of that code. It will run in my existing AC controller, right?
Second - what happens below 340VDC? Will it still balance the phases but have the voltage lower .. or does it trip? I want to minimize the number of batteries that I need to drag around with me. 150 - 170 VDC should be good for single phase 120V. If I can run off 2 packs (250 - 270V) it would help. Running from one pack (125-135V) at maybe 85 VAC would be awesome!
I have a Better Place pack that I can use, with it's own pre-charge circuit, to power the bus. It's split into chunks of 128V (135V when full). AND I'd love to run my sump pump ... about 800 feet from the nearest available receptacle.
It's getting wet .. spring is here ... and if I can get rid of water *AND* play with Power electronics ... AND batteries ... this weekend ... well, I'd like that
