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electrical:solar:pwm_tweaking

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electrical:solar:pwm_tweaking [2019/07/17 08:20]
frater_secessus [set Vabs and Vfloat relatively high]
electrical:solar:pwm_tweaking [2021/06/26 11:46] (current)
frater_secessus [the controller's achilles heel]
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-===== the controller's achilles heel =====+===== PWM's achilles heel =====
  
 During charging with a PWM controller **the solar panel will be running at the voltage of the battery bank**.  Unfortunately, this is almost never the voltage at which the panel makes its rated power (Vmp).  The panel will make less and less power when battery voltage is low.   During charging with a PWM controller **the solar panel will be running at the voltage of the battery bank**.  Unfortunately, this is almost never the voltage at which the panel makes its rated power (Vmp).  The panel will make less and less power when battery voltage is low.  
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 Note:  consult the battery manufacturer's recommendations for the actual maximum voltages.  Controller presets often are set too low by the factory since they don't know what battery you will use it with. Better safe than sorry, say their lawyers.  Note:  consult the battery manufacturer's recommendations for the actual maximum voltages.  Controller presets often are set too low by the factory since they don't know what battery you will use it with. Better safe than sorry, say their lawyers. 
  
 +DO invest in the $10 temperature probe option.
 ==== battery: maintain a higher state of charge ==== ==== battery: maintain a higher state of charge ====
  
electrical/solar/pwm_tweaking.1563366055.txt.gz ยท Last modified: 2020/10/11 19:48 (external edit)