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electrical:solar:charge_controller

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electrical:solar:charge_controller [2022/10/12 13:15]
frater_secessus [how to choose] 		electrical:solar:charge_controller [2023/01/22 10:22]
frater_secessus [single-stage chargers]
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 high for system needs((particularly with higher than nominal 12v panels )) the controller performs a DC-DC conversion to bring the voltage down to a directly usable level.  Because **current through a conductor is directly proportional to voltage**((https://en.wikipedia.org/wiki/Ohm%27s_law)) this downconversion effectively turns excess voltage into increased amps.(minus conversion losses).   high for system needs((particularly with higher than nominal 12v panels )) the controller performs a DC-DC conversion to bring the voltage down to a directly usable level.  Because **current through a conductor is directly proportional to voltage**((https://en.wikipedia.org/wiki/Ohm%27s_law)) this downconversion effectively turns excess voltage into increased amps.(minus conversion losses).  
  
-This ability to decouple panel and bank voltage can result in 10%-30% more power harvested from 12v nominal panels than with a PWM controller, depending on conditions.  //Average// daily production with MPPT is typically ~+15%((https://www.redalyc.org/journal/849/84959429001/html/)), which may or may not justify the added cost on its own.  +This ability to decouple panel and bank voltage can result in 10%-30% more power harvested from 12v nominal panels than with a PWM controller, depending on conditions.  //Average// daily production with MPPT is typically ~+15%((https://web.archive.org/web/20221012213623/https://www.redalyc.org/journal/849/84959429001/html/)), which may or may not justify the added cost on its own.  
  
  
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 > ....a rather inexpensive piece of equipment but it doesn’t do a terrible job of being a basic solar charge controller. On the whole, it behaves as one may expect – protecting the battery from excessive voltage and overdischarge, with an integrated dusk timer function and USB outputs...what do you expect for $10-20? Something that works is already a big surprise to me. > ....a rather inexpensive piece of equipment but it doesn’t do a terrible job of being a basic solar charge controller. On the whole, it behaves as one may expect – protecting the battery from excessive voltage and overdischarge, with an integrated dusk timer function and USB outputs...what do you expect for $10-20? Something that works is already a big surprise to me.
 +
 +Further viewing:
 +
 +
 +  * [[https://www.youtube.com/watch?v=Fmfnxkh1IFo|basic setup]] by Scott
 +  * [[https://www.youtube.com/watch?v=v-iLu9DS558|setting up the LOAD functions]] by Scott
  
 ==== USB converters ==== ==== USB converters ====
electrical/solar/charge_controller.txt · Last modified: 2024/06/01 22:01 by frater_secessus

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