Virtual tracking

mountainmanmountainman Registered Users Posts: 309 ✭✭
What is the best settings to virtual track.
My main array is at 180.
What degrees should morning or afternoon panels be aimed? 
I get sun from sunrise to about 5 pm summer or winter. Latitude is 32.14 n.
Blue ridge mts. Renogy pwm 4 100 watt and 2 190 evergreen on Epever mppt 30. 4 Gc 208 ah @12 volts 300 watt psw inverter. 2 kw genny. Iota 45.

Comments

  • BB.BB. Super Moderators, Administrators Posts: 30,167 admin
    Play with a solar calculation program and see what the overall harvest is... You will lose some harvest, but the more hours of harvest is better for charging lead acid batteries.

    The big problem for many folks is low sun angle in winter and possible shading (trees, structures, mountains)... So tracking may be shaded and not gain much in the way of time on charge.

    Pvwatts does give you estimated harvest by day and time... If in winter afternoon sun goes away after 2pm, you can see how much harvest is lost.


    Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • mountainmanmountainman Registered Users Posts: 309 ✭✭
    On the shortest days dec pv watts at 62° at 180. 4.71 hours
    160 sse and ssw at 200° gives 4.5 hours very little lost.
    With such short days and la needing long charge times. Shouldn't it help some.
    I understand it would be more effective in summer.
    What altitude  does the sun become substantially effective 15° or so?

     
    Blue ridge mts. Renogy pwm 4 100 watt and 2 190 evergreen on Epever mppt 30. 4 Gc 208 ah @12 volts 300 watt psw inverter. 2 kw genny. Iota 45.
  • MichaelKMichaelK Registered Users Posts: 114 ✭✭✭
    edited March 24 #4
    Instead of guessing at the best angles, azmiths, ect, just build an adjustable array and work out the numbers in the real world.  Here is the array frame I built, which is both daily and seasonally adjustable.  You can occupy your time generating all the real-world data you want about what's optimal.
    15 Renogy 300w panels,  Midnight 200 CC, 8 Trojan L16 batteries, Schneider XW6848 NA inverter, AC-Delco 6000w gen.
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