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electrical:solar:status [2019/09/07 19:42] frater_secessus [when adding loads] |
electrical:solar:status [2020/08/29 22:28] frater_secessus [in float] |
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====== Is my solar working? ====== | ====== Is my solar working? ====== | ||
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+ | 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. | ||
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- | **During Absorption charging | + | **During |
+ | |||
+ | **with MPPT controllers** | ||
* 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' | ||
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* **Example: | * **Example: | ||
- | **During Absorption charging | + | **with PWM controllers** |
* Vpanel & Vbattery == Vabs until the controller' | * Vpanel & Vbattery == Vabs until the controller' | ||
* Controller output decreasing as current demand drops. | * Controller output decreasing as current demand drops. | ||
* the controller may get warmer as current demand drops((percentage of time the PWM circuit is turned OFF increases)) | * the controller may get warmer as current demand drops((percentage of time the PWM circuit is turned OFF increases)) | ||
* **Example: | * **Example: | ||
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+ | ==== transitioning to float ==== | ||
+ | |||
+ | When transitioning from Absorption to Float the voltage needs to drop about a volt. The system will " | ||
+ | |||
+ | * starts at Vabs | ||
+ | * power generation stops | ||
+ | * voltage drops to Vfloat | ||
+ | * when voltage reaches Vfloat the system will start making power to hold that setpoint. | ||
+ | |||
==== in float ==== | ==== in float ==== |