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electrical:solar:status [2019/07/13 20:46] frater_secessus [evening] |
electrical:solar:status [2019/09/07 19:42] frater_secessus [when adding loads] |
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A **poorly running system** is observed to deliver very little power because it isn't set up right (or is shaded, etc) and can't do any better. | A **poorly running system** is observed to deliver very little power because it isn't set up right (or is shaded, etc) and can't do any better. | ||
- | Also counterintuitively, | + | Also counterintuitively, |
- | This page is to help solar beginners tell what their system is doing without special equipment. | + | This page is to help solar beginners tell what their system is doing without special equipment. |
===== numbers rather than icons or lights ===== | ===== numbers rather than icons or lights ===== | ||
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**During bulk charging with MPPT** | **During bulk charging with MPPT** | ||
- | * Vpanel == Vmp | + | * Vpanel == Vmp((although [[electrical: |
* Vbatt climbing toward Vabs | * Vbatt climbing toward Vabs | ||
- | * Current delivered to battery holds steady | + | * Current delivered to battery holds steady((assuming sunlight holds steady)) |
* **Example: | * **Example: | ||
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When **adding loads to PWM during absorption (or float)** | When **adding loads to PWM during absorption (or float)** | ||
* Vpanel & Vbatt held at Vabs (or Vfloat) if possible((by reducing the OFF timeslices in the PWM circuit, perhaps until the panel and battery are 100% connected at full output)) | * Vpanel & Vbatt held at Vabs (or Vfloat) if possible((by reducing the OFF timeslices in the PWM circuit, perhaps until the panel and battery are 100% connected at full output)) | ||
- | * If enough power is available no change will be observed but the controller may run cooler | + | * If enough power is available no change will be observed but the controller may run cooler((as PWM switching reduces in frequency.)) |
* If demand outstrips supply the Vbattery & Vpanel will drop((causing a bit of a "death spiral", | * If demand outstrips supply the Vbattery & Vpanel will drop((causing a bit of a "death spiral", | ||
* **Example**: | * **Example**: |