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electrical:solar:status [2017/12/02 04:44]
frater_secessus 		electrical:solar:status [2018/12/31 14:04]
frater_secessus [then observe the controller]
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   - solar is $$$; and   - solar is $$$; and
   - solar can seem magical; and   - solar can seem magical; and
-  - **both poorly running systems and mostly/fully charged systems show low levels of output**. +  - both **poorly running systems** and **mostly/fully charged systems** show low levels of output for different reasons. 
  
 The last point may be counterintuitive.  A **fully charged system** is observed to deliver very little power because the bank is already charged;  the system is loafing, waiting for a load.  It only cranks up power when you add a big load or start charging a depleted battery.  With lead chemistry batteries this also applies in [[electrical:12v:charging#absorption_stage|Absorption stage]], when the battery reduces the amount of current it will accept. The last point may be counterintuitive.  A **fully charged system** is observed to deliver very little power because the bank is already charged;  the system is loafing, waiting for a load.  It only cranks up power when you add a big load or start charging a depleted battery.  With lead chemistry batteries this also applies in [[electrical:12v:charging#absorption_stage|Absorption stage]], when the battery reduces the amount of current it will accept.
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 ===== then observe the controller ===== ===== then observe the controller =====
  
-These checks are admittedly crude but will help see if your system is getting it done.  No expensive or specialized equipment is required. MPPT controllers in particular will reveal a great deal of information by how they interact with the panels. +These checks are admittedly crude but will help see if your system is getting it done.  No [[electrical:12v:battery_monitor|expensive or specialized equipment]] is required.((but use them if you have them!)) MPPT controllers in particular will reveal a great deal of information by how they interact with the panels. 
  
 For the examples below we will assume the system is set up this way: For the examples below we will assume the system is set up this way:
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   * Vbatt == Vabs until the controller's criteria for ending absorption is met   * Vbatt == Vabs until the controller's criteria for ending absorption is met
   * Controller output decreasing as current demand drops.   * Controller output decreasing as current demand drops.
-  * **Example:**  Panel voltage 17v and rising, battery voltage held at Vabs == 12.6v, controller output amps 2A and dropping+  * **Example:**  Panel voltage 17v and rising, battery voltage held at Vabs == 14.6v, controller output amps 2A and dropping
  
 **During Absorption charging with PWM** **During Absorption charging with PWM**
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   * 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:**  Panel and battery voltage held at Vabs == 12.6v, controller output 2A and dropping+  * **Example:**  Panel and battery voltage held at Vabs == 14.6v, controller output 2A and dropping
  
 ==== in float ==== ==== in float ====
electrical/solar/status.txt ยท Last modified: 2024/01/14 15:32 by frater_secessus

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