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electrical:solar:overpaneling

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electrical:solar:overpaneling [2018/07/20 16:45]
frater_secessus [MPPT and heat] 		electrical:solar:overpaneling [2019/02/01 20:08]
frater_secessus [vs. charge controller]
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   * [[#vs._charge_controller|overpaneled charge controller]] - battery bank and charge controller are evenly matched;  panel nominal or actual output is  more than the controller's rating.   * [[#vs._charge_controller|overpaneled charge controller]] - battery bank and charge controller are evenly matched;  panel nominal or actual output is  more than the controller's rating.
-  * [[#vs._battery_bank|overpaneled battery bank]] - solar panels and charge controller are evenly matched; both are oversized compared to battery bank.+  * [[#vs._battery_bank|overpaneled battery bank]] - solar panels and charge controller are evenly matched; both are oversized compared to battery bank.  This is the most common meaning.
    
  
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   * you want to get deeply cycled batteries charging as early as possible in the morning   * you want to get deeply cycled batteries charging as early as possible in the morning
   * you spend most of your time in areas with [[electrical:solar#weather-related_issues|marginal insolation]], like the Pacific Northwest   * you spend most of your time in areas with [[electrical:solar#weather-related_issues|marginal insolation]], like the Pacific Northwest
 +  * you spend time in partial shade
   * you want to use a smaller controller instead of jumping up to the next size.  Example, 43A max output and your choices are 40A or 60A controllers.   * you want to use a smaller controller instead of jumping up to the next size.  Example, 43A max output and your choices are 40A or 60A controllers.
  
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   -  when there is very little load being used   -  when there is very little load being used
  
-This occurs because the PPT controller moves Vpanel toward Voc to reduce current when less is needed but battery voltage is high, as in late Absorption .  This occurs because the greater the voltage conversion the more heat is produced.  For this reason, and perhaps counterintuitively, adding some load to the system in Absorption can drop PV voltage (and therefore CC temps) to lower levels.((http://forum.solar-electric.com/discussion/comment/256896#Comment_256896))+This occurs because the PPT controller moves Vpanel toward Voc to reduce current when less is needed but battery voltage is high, as in late Absorption.  For this reason adding some load to the system in Absorption can //reduce// PV voltage (and therefore CC temps) to lower levels.((http://forum.solar-electric.com/discussion/comment/256896#Comment_256896))
  
  
electrical/solar/overpaneling.txt ยท Last modified: 2023/11/22 10:31 by frater_secessus

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