Recent content by MattiFin

If your panel array is spead over thousand miles it might have some effect. safe to say that it doesnt have effect on off-grid installations.

30kwh out of 3.2kwh panels is not realistic unless you like to sail in desert. For flat mounted panels 10-15 kWh per day in Florida would be possible :)

I wouldn’t worry about that level of wings. Connector and cable cross section is probably still sufficient. Wings are problem in high voltage installations as the sharp corners create corona discharges. some tips were already given on this thread but you can also try mismatching die sizes like...

Not much other option than Victron. SMA and Fronius would be otherwise exellent choices but need high voltage battery like everything nowadays.

Probably depends a lot on location. I can imagine in southern california or baja california you would get pretty good peak production and cloudy days are lot less common. UK or Finland then on the other hand has 6 crappy days and one good day. Additionally in summer you get daylight 24/7 but...

300W for monitor is also either huge overestimate or really bad choice for solar-powered monitor. best 32" 4K displays are less than 20W (EIZO FlexScan EV3240X-WT) Curved 32" 4k Samsung u32r59c has claimed 48W but measures only 30W with reasonable brightness (in office type environment, would...

Your PC and laptop consumption sound kinda high. For solar it is worth upgrading to latest and most energy efficient CPU/GPU. Average 14” business laptop uses around 10-30w in light office use.

Very good point. Current dumping from other cells would be a major problem only on battery banks with cells in parallel. Also fuses should have no problem disconnecting the string with one battery failed to zero ohms as currents involved are only about 1/15 of invidual cell short circuit...

Also there are no quarantees that the cell shorts to solid zero ohms. It could as well short partially and draw only 200A. Over time 6 parallel strings would dump nearly 1800Ah and 6kWh of energy to that poor cell. Enough energy to make the cell glow red. :whistle: Recommendation for String...

Yeah even when one string would be in pitch black cave and another in full sunlight. Solar panel is a string of diodes connected in series. It will draw very little to no current if the (externally applied) voltage is lower than the diode string voltage.

Parallei strings work just fine both in theory and practice. No need for diodes. Just need to match the string voltages reasonably close (10-20%) to each other, mismatch in string voltage is lost energy.

Exactly.

Cell failure was my initial thought also. BUT in that case the fuse would need to be rated only for 3.4 volts as only one cell of the pack would fail and pack voltage would differ only by 3 volts from other packs. Sustained arcing is pretty unlikely if not impossible with 3 volts, electric arcs...

Perkele! En ymmärrä.

Looks to me that best changes for this to work are materials with low bandgap energy. Thus you have lots of electrons that have excess energy that can still "somehow" create extra electrons. Downside of low bandgap material would be that it produces lower voltage. 200% QHE is not any good if...