Eco-Worthy MPPT and Solar30 PWM Test
Did a quick backyard test of my two solar controllers using the actual trailer wiring etc as intended for camping with solar later this month. Got some blue sky, no clouds. The Eco-W on the 230w p...
Forum Discussion
PT, I won't be comparing in the shade. Panels are out in the open.
I can compare for all day with blue sky all day using my contraption in flat, tilted south, and tracking modes if I get that ambitious.
I plan to just get a set of figures for the same place near the same time of year for tilted South on an equally nice day and compare them.
the "tracking" figures are hard to compare when you compare my "floppy" with my "twirler" because the tilt part of that is different.
That way, it should reveal whether the MPPT does more above PWM in the shoulder hours as is often claimed, than it does more than PWM mid-day. I am dubious of that claim.
For a cloudy day comparison I could see what the 130 is doing and what the 230 is doing at the same time and do some math maybe.
The main difficulty is I have the 230 on the bank with the Trimetric now and the 130 is on the bank with no Trimetric, but I can get the 130's Isc so I can say if it is getting full Isc then so should the 230 be doing its best.
I can arrange a jumper to bring the two banks together and turn off the 230s input, so I can compare the 130's amps as showing on the Solar30 with the Isc and the Trimetric's amps. That should reveal any error in the Solar30's amps reading.
I can compare for all day with blue sky all day using my contraption in flat, tilted south, and tracking modes if I get that ambitious.
I plan to just get a set of figures for the same place near the same time of year for tilted South on an equally nice day and compare them.
the "tracking" figures are hard to compare when you compare my "floppy" with my "twirler" because the tilt part of that is different.
That way, it should reveal whether the MPPT does more above PWM in the shoulder hours as is often claimed, than it does more than PWM mid-day. I am dubious of that claim.
For a cloudy day comparison I could see what the 130 is doing and what the 230 is doing at the same time and do some math maybe.
The main difficulty is I have the 230 on the bank with the Trimetric now and the 130 is on the bank with no Trimetric, but I can get the 130's Isc so I can say if it is getting full Isc then so should the 230 be doing its best.
I can arrange a jumper to bring the two banks together and turn off the 230s input, so I can compare the 130's amps as showing on the Solar30 with the Isc and the Trimetric's amps. That should reveal any error in the Solar30's amps reading.
