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electrical:solar:output [2020/05/17 19:45]
frater_secessus [panel tilt] 		electrical:solar:output [2020/09/24 12:58]
frater_secessus [insolation]
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 ===== charge controller type ===== ===== charge controller type =====
  
-Due to their design, [[electrical:solar:charge_controller#pwm|PWM]] and [[electrical:solar:charge_controller#shunt|shunt]] charge controllers will very rarely allow the panel to run at max output for given conditions.  The lower the battery voltage (Vbatt) the lower the panel voltage (Vpanel), therefore the lower the power output.((Vpanel * ~Imp = P))+Due to their design, [[electrical:solar:charge_controller#pwm|PWM]] and [[electrical:solar:charge_controller#shunt|shunt]] charge controllers will very rarely allow the panel to run at max output for given conditions.  The lower the battery voltage (Vbatt) the lower the panel voltage (Vpanel), therefore the lower the power output.((Vpanel * ~Imp = P))  The output can be increased somewhat by [[electrical:solar:pwm_tweaking|tweaking battery voltages higher]].
  
 [[electrical:solar:charge_controller#mppt|MPPT]] controllers can run the panel at max output when needed, but are much more expensive.  [[electrical:solar:charge_controller#mppt|MPPT]] controllers can run the panel at max output when needed, but are much more expensive. 
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     * amount of atmosphere the rays have to penetrate (less at solar noon, more at other times or anytime sun is relatively lower on the horizon)     * amount of atmosphere the rays have to penetrate (less at solar noon, more at other times or anytime sun is relatively lower on the horizon)
     * air quality:  \\ smoke((http://www.cheaprvliving.com/forums/showthread.php?tid=26592&pid=333826#pid333826)),((http://www.cheaprvliving.com/forums/showthread.php?pid=331627#pid331627))     * air quality:  \\ smoke((http://www.cheaprvliving.com/forums/showthread.php?tid=26592&pid=333826#pid333826)),((http://www.cheaprvliving.com/forums/showthread.php?pid=331627#pid331627))
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 +{{ http://img.mousetrap.net/misc/wattsunderconditions.jpg}}Based on [[https://en.wikipedia.org/wiki/Orders_of_magnitude_%28illuminance%29|lux measurements]], we can estimate how sky clarity/brightness affects the amount of power theoretically available to the panel.  
 +Takeaways:  overcast skies greatly reduce output, and there is no meaningful power available at sunrise/sunset. 
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 +Also see [[opinion:frater_secessus:solar harvest|these anecdotal observations]].
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electrical/solar/output.txt ยท Last modified: 2024/02/21 11:49 by frater_secessus

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