This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
electrical:solar:status [2019/07/13 20:42] frater_secessus [morning] |
electrical:solar:status [2019/11/12 12:34] frater_secessus [in absorption] |
||
---|---|---|---|
Line 5: | Line 5: | ||
====== Is my solar working? ====== | ====== Is my solar working? ====== | ||
+ | |||
+ | Note: for simplicity' | ||
+ | |||
It is common for those with new solar configurations to worry about whether or not they are working. | It is common for those with new solar configurations to worry about whether or not they are working. | ||
Line 17: | Line 20: | ||
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 ===== | ||
Line 64: | Line 67: | ||
**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: | ||
Line 77: | Line 80: | ||
- | **During Absorption charging with MPPT** the battery will need less and less current. | + | **During |
* Vpanel starts to creep up from Vmp toward Voc | * Vpanel starts to creep up from Vmp toward Voc | ||
* Vbatt == Vabs until the controller' | * Vbatt == Vabs until the controller' | ||
Line 115: | Line 118: | ||
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**: | ||
Line 157: | Line 160: | ||
Note: You can tell your batteries are in Absorption because the bank will be at Vabs, the controller' | Note: You can tell your batteries are in Absorption because the bank will be at Vabs, the controller' | ||
+ | If not, [[electrical: | ||
==== evening ==== | ==== evening ==== | ||
- | **Are you hitting sundown with //at least// 12.7v in your bank? | + | **Are you hitting sundown with //at least// |
+ | |||
+ | If not, either we are not harvesting enough power or we are using too much. Stop running heavier loads when the controller can no longer hold Vfloat. | ||