Hello Wrenches, Does anyone have experience with Chilicon Microinverters? http://www.chiliconpower.com/
We do very few straight grid-tied systems, however, these micros are interesting because they have a built-in and adjustable function that modulates the power output based on the AC voltage at their terminals. I don't know the exact numbers but I believe it ramps from 100% power output starting at 255VAC ramping down to 0% output at 265VAC. My interest in these micros is for AC coupling applications for backup during grid outages. I am curious if you are islanding a backup loads panel, and the batteries are full and loads drop lower than the microinverter output, if the battery inverter will allow the AC waveform to creep up in a way that would allow the power modulation to take place. Is this a way to get reliable 3 stage charging when the grid is down without a DC charge controller or a diversion controller? How does a battery based inverter decide its time to do a frequency shift (or trip a relay) to throw the microinverters off-line? Normally, my preference is to DC couple or use a Sunny Island for these battery backups, but the rapid shutdown compliance really adds a lot of cost to these approaches on roof-mounts. Thanks in advance -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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