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--- electrical:solar:pwm_tweaking [2023/11/19 16:16]
frater_secessus [PWM's achilles heel]
+++ electrical:solar:pwm_tweaking [2023/11/19 16:18] (current)
frater_secessus [PWM's achilles heel]
@@ Line 15: / Line 15: @@
 {{ http://bestsolarpanelforhome.com/wp-content/uploads/2017/03/57-79-600x600.jpg?200}}Consider the spec sheet for a random 100w panel (right).  100W is made when the panel is run at 17.8v (Vmp). We will use Imp for our math, but the absolute numbers are not important, only the pattern.  Current will usually be less under normal conditions, but can spike to Isc [[https://diysolarforum.com/threads/why-is-mppt-better-than-pwm.24892/page-4#post-295861|under some conditions]].
-.8v x 5.6A = 99.68w <-- rating under laboratory conditions \\
+.8v x 5.6A = 100w <-- rating under laboratory conditions((the math doesn't line up perfectly because the specs are rounded)) \\
 .8v x 5.6A = 94.70w <-- MPPT running at 95% efficiency

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