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electrical:solar:overpaneling

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electrical:solar:overpaneling [2023/11/22 15:31]
frater_secessus [vs. charge controller] 		electrical:solar:overpaneling [2025/08/01 15:25] (current)
frater_secessus [vs. battery bank]
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 **Note:**  overpaneling is not //overvolting//, which would be exceeding the maximum input voltage of the charge controller.  Overvolting often results in damage to the controller; it can be caused by linking too many panels in series, or running too close to the voltage max in conditions that raise the panels' Voc.((http://www.cheaprvliving.com/forums/Thread-36-volt-solar-panel?pid=144154#pid144154)) **Note:**  overpaneling is not //overvolting//, which would be exceeding the maximum input voltage of the charge controller.  Overvolting often results in damage to the controller; it can be caused by linking too many panels in series, or running too close to the voltage max in conditions that raise the panels' Voc.((http://www.cheaprvliving.com/forums/Thread-36-volt-solar-panel?pid=144154#pid144154))
 ===== vs. charge controller ===== ===== vs. charge controller =====
 +
 +**TL;DR**:  overpaneling the controller means sizing MPPT for //actual// incoming solar power rather than //rated// panel wattage.  
  
 {{ http://www.nacleanenergy.com/images/articles/NovemberDecember2014/Solar/advancedenergy_figure1.jpg?200}} {{ http://www.nacleanenergy.com/images/articles/NovemberDecember2014/Solar/advancedenergy_figure1.jpg?200}}
-**Overpaneling**, or having "too much" panel for the rating of your MPPT charge controller, can be desirable in some situations.  It is a **trade-off that biases the setup** to get more power out of normal and marginal conditions at the expense of the peak output during optimal conditions.((sun overhead, clear sky, low temps))  +**Overpaneling**, or having "too much" panel for the rating of your MPPT charge controller, can be desirable in some situations.  It is a **trade-off that biases the setup** to get more power out of normal and marginal conditions at the possible expense of the peak output during optimal conditions.((sun overhead, clear sky, low temps))  
  
 >In car terms, the overpaneled system trades away some of the panels' top-end output for more low- and mid-range grunt. -- secessus >In car terms, the overpaneled system trades away some of the panels' top-end output for more low- and mid-range grunt. -- secessus
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   * you want your lead-chemistry batteries to stay as charged as much as possible   * you want your lead-chemistry batteries to stay as charged as much as possible
   * you are in an area with relatively little sunshine   * you are in an area with relatively little sunshine
 +  * you are in a position that has a limited time window of clear sun
   * you want to save battery weight   * you want to save battery weight
   * you want to reduce battery investment and complexity   * you want to reduce battery investment and complexity
electrical/solar/overpaneling.1700667093.txt.gz ยท Last modified: 2023/11/22 15:31 by frater_secessus

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