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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 [2022/10/12 13:30] frater_secessus [PWM'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**. | + | During charging with a PWM controller **the solar panel will be running at the voltage of the battery bank**.((or close enough for the purposes of this discussion. |
This affects charging in all three [[electrical: | This affects charging in all three [[electrical: | ||
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Since the panels make more power at higher voltages((up to Vmp)) cranking up Vabs and Vfloat to higher-but-still-sane levels will result in more power being harvested. | Since the panels make more power at higher voltages((up to Vmp)) cranking up Vabs and Vfloat to higher-but-still-sane levels will result in more power being harvested. | ||
- | Using the above panel as an example, Vabs of 14.7v will yield 3.5% more power than a Vabs of 14.1v. | + | Using the above panel as an example, Vabs of 14.7v will yield 3.5% more power than a Vabs of 14.1v. |
- | Note: consult the battery manufacturer' | + | Note: consult the battery manufacturer' |
+ | DO invest in the $10 temperature probe option. | ||
==== battery: maintain a higher state of charge ==== | ==== battery: maintain a higher state of charge ==== | ||