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electrical:solar:status [2023/08/09 13:54] frater_secessus [transitioning to float] |
electrical:solar:status [2024/01/14 10:46] frater_secessus [setups with no float] link to float to make things easier |
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===== first collect a few numbers ===== | ===== first collect a few numbers ===== | ||
To tell at a glance what your system is doing you need to find a couple pieces of info about your system. | To tell at a glance what your system is doing you need to find a couple pieces of info about your system. | ||
+ | |||
+ | |||
+ | {{ https:// | ||
+ | |||
+ | ==== panel specs ==== | ||
+ | |||
+ | The [[electrical: | ||
+ | |||
+ | * **Vmp**, the voltage at which the panel makes max power under laboratory conditions((likely lower in reality)) | ||
+ | * **Voc**, the highest voltage the panel will put out under normal cirumstances. | ||
+ | * when in use, **Vpanel** is the panel voltage reported by the controller. | ||
+ | |||
+ | On the curve pictured at the right Vmp is at the peak of the red voltage line, and Voc is on the far right where output crashes to 0W. | ||
+ | |||
+ | |||
+ | ==== controller ==== | ||
+ | |||
* **Vabs** - the charge controller' | * **Vabs** - the charge controller' | ||
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==== setups with no float ==== | ==== setups with no float ==== | ||
- | Configurations with no float (" | + | Configurations with no float (" |
+ | |||
+ | - charge to the Absorption (" | ||
+ | - **stop charging** | ||
+ | - until voltage falls to the rebulk (" | ||
+ | - repeat | ||
+ | |||
+ | The fall to reBulk looks like the transition | ||
+ | |||
+ | === Renogy confusion === | ||
+ | |||
+ | By default Renogy Li profiles work this way, and cause much concern for Renogy users who have not read their manuals and/or who are not familiar with how solar charge controllers / chargers work. [The required information is present [[https:// | ||
+ | |||
+ | * **Rover series** - the table on page 37 of [[https:// | ||
+ | * **DC-DC/ | ||
+ | * **DC-DC charger** (20A/ | ||
+ | * page 18 says " | ||
+ | * there is no setting for Float charge, as shown in the table on page 17 of [[https:// | ||
+ | * page 18 says that Float is for lead only | ||
+ | * the manual does not state the 13.2v boost return setpoint [an egregious error - secessus] | ||
+ | |||
+ | Users uncomfortable with this behavior can set up the USER profile to meet their needs, including defining [[electrical: | ||
- | The fall to reBulk looks like the transition to Vfloat described above. In both cases the controller makes no (or practically no) power until the lower setpoint is reached. | ||
==== in float ==== | ==== in float ==== | ||