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electrical:solar:shading

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electrical:solar:shading [2024/11/08 16:14]
frater_secessus [so users try different panel configurations] 		electrical:solar:shading [2024/11/08 16:30] (current)
frater_secessus [so users try different panel configurations]
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 For reasons discussed below the string of 36 cells will be subdivided into substrings of cells in series. 2 strings of 18 cells is common((for cost reasons)).  So we can think of this panel For reasons discussed below the string of 36 cells will be subdivided into substrings of cells in series. 2 strings of 18 cells is common((for cost reasons)).  So we can think of this panel
  
-    ############ +    ######### 
-    ############ +    ######### 
-    ############ +    ######### 
-    ############+    #########
          
 straightened out but electrically identical straightened out but electrically identical
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     ################## ##################     ################## ##################
  
-...where the equal sign (=) is a bypass path when needed to prevent damage. +...where the equal sign ("=") is a bypass path when needed to prevent damage. 
  
  
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 ==== so users try different panel configurations ==== ==== so users try different panel configurations ====
  
-Let's start using both our panels+=== parallel === 
 + 
 + 
 +Let's start using both our panels in parallel
  
      #########      #########
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      #########      #########
      #########      #########
 +     
 +which, unwound and with bypass diodes, would be
 +
 +     
 +             =                 =   
 +    ################## ################## 
 +    
 +             =                 =   
 +    ################## ##################     
 +     
 +
 +if we have the same partial shading as before
 +
 +
 +     
 +             =                 =   
 +    ################## ##################
 +    
 +             =                 =   
 +    ################## ####0###00########
 +     
 +     
 +     
 +
 +
 +To prevent voltage backing up into a panel from a neighboring panel (or battery bank at night) each //panel// typically has a //blocking diode//. So the complete picture is:
 +
 +             =                 =   
 +    ################## ################## = 
 +    
 +             =                 =   
 +    ################## ####0###00######## =     
 +
 +Note:  in most panels the blocking and bypass diodes are identical parts, just installed in different places, in different orientations, and for different purposes.
 +
 +
 +
 +     
 +=== series ===   
 +    
 +             =                 =                   =                  = 
 +    ################## ################## = ################## ####0###00######## =
 +
 +
 +
 +
 +
 +    
 +    
 +    
 +    
 +    
 ===== further reading ===== ===== further reading =====
  
electrical/solar/shading.1731100498.txt.gz · Last modified: 2024/11/08 16:14 by frater_secessus

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