[RE-wrenches] Solar Boost Controller in Senegal

[Wind-sun.com]

Not sure why you think that cell matching is an incorrect use for MPPT. That is one of it's biggest advantages.

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Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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  ----- Original Message ----- 
  From: Allan Sindelar 
  To: 'RE-wrenches' 
  Cc: joeyh at earthwalk.com 
  Sent: Tuesday, June 30, 2009 10:01 AM
  Subject: Re: [RE-wrenches] Solar Boost Controller in Senegal


  Walt,

  I would also offer that in a hot climate, MPPT in general is only useful in a case where odd cell counts take the Vmp away from 24V nominal specs. That is, MPPT was originally developed to harvest the voltage headroom between Voc and Vmp, which was greatest in cold ambient temperatures. There is little benefit to MPPT in a tropical climate, unless it’s being used (incorrectly in this case) to adapt a particular module with odd cell count.
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