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electrical:solar:status

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electrical:solar:status [2020/08/29 22:29]
frater_secessus [in float] 		electrical:solar:status [2020/08/29 22:34]
frater_secessus [transitioning to float]
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 ==== transitioning to float ==== ==== transitioning to float ====
  
-When transitioning from Absorption to Float the voltage needs to drop about a volt.  The system will "free-fall" (make little or no power) to allow the voltage to fall.  The transition may take seconds or minutes, depending on how/if the system is loaded.+When transitioning from Absorption to Float the voltage needs to drop about a volt.  The system will "free-fall" (make little or no power) to allow the voltage to fall.((with MPPT controllers you may see Vpanel go quite close to Voc))   The transition may take seconds or minutes, depending on how/if the system is loaded.
  
-  * starts at Vabs +  * Vbatt starts at Vabs 
-  * power generation stops +  * power harvest is cut off or greatly curtailed 
-  * voltage drops to Vfloat +  * vbatt drops to Vfloat  
-  * when voltage reaches Vfloat the system will start making power to hold that setpoint.+  * when voltage reaches Vfloat the system will start making power to hold //that// setpoint.
  
  
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   * If enough power is available no change will be observed but the controller may run cooler((as PWM switching reduces in frequency.))   * 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", as PWM produces less power as panel voltage drops))   * If demand outstrips supply the Vbattery & Vpanel will drop((causing a bit of a "death spiral", as PWM produces less power as panel voltage drops))
-  * **Example**:  Upon adding load, the controller releases power it had been dissipating in the PWM circuit.  Current output spikes to meet load demand.((this is reflected in either battery charging amps or load amps depending on how the loads are wired))  Output is limited to whatever power the panel puts out at Vabs & Vfloat.((almost certainly less than what the panel could put out at Vmp))+  * **Example**:  Upon adding load, the controller releases power it had been constricting (modulating the pulse width). Current output spikes to meet load demand.((this is reflected in either battery charging amps or load amps depending on how the loads are wired))  Output is limited to whatever power the panel puts out at Vabs & Vfloat.((almost certainly less than what the panel could put out at Vmp))
  
  
electrical/solar/status.txt · Last modified: 2024/06/05 16:37 by frater_secessus

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