User Tools

Site Tools


electrical:solar:overpaneling

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Last revision Both sides next revision
electrical:solar:overpaneling [2021/06/05 17:43]
frater_secessus [Overpaneling]
electrical:solar:overpaneling [2023/04/10 16:34]
frater_secessus [vs. battery bank]
Line 16: Line 16:
  
 The overpaneled system's power output bell curve is //shifted upwards// and cut off by the controller when it reaches its limits.  This is known as clipping, trimming, or clamping due to the "flat top" appearance of the overpaneled output curve. The overpaneled system's power output bell curve is //shifted upwards// and cut off by the controller when it reaches its limits.  This is known as clipping, trimming, or clamping due to the "flat top" appearance of the overpaneled output curve.
 +
 +With appropriate overpaneling the clipping is relatively minor.  Victron notes that:
 +
 +>> Generally total energy harvested from a 130% panel oversizing results in less than 1% annual energy loss. -- [[https://www.victronenergy.com/blog/2014/03/28/matching-victron-energy-solar-modules-to-the-new-mppt-charge-regulators/|source]]
 +
 +
  
 **Example:**  Consider the image to the right.((The image is that of a different PV-related configuration but it works for our purposes.)) The smaller/interior bell curve is the normally paneled configuration. \\  **Example:**  Consider the image to the right.((The image is that of a different PV-related configuration but it works for our purposes.)) The smaller/interior bell curve is the normally paneled configuration. \\ 
Line 114: Line 120:
  
 Since the underbanked system has less capacity will reduce your actual [[electrical:solar:sizing#your_reserve_needs|reserve days of power]] to some extent.  But during daytime there is //some// solar power coming in and an overpaneled configuration will harvest relatively more power in sub-optimal conditions.  The smaller bank will get through Bulk and well into Absorption faster, too. This will help extend the //effective// reserve days of power. Since the underbanked system has less capacity will reduce your actual [[electrical:solar:sizing#your_reserve_needs|reserve days of power]] to some extent.  But during daytime there is //some// solar power coming in and an overpaneled configuration will harvest relatively more power in sub-optimal conditions.  The smaller bank will get through Bulk and well into Absorption faster, too. This will help extend the //effective// reserve days of power.
 +
 +Further reading:
 +
 +  * [[electrical:solar:slim_reserve|slim reserves]]
  
electrical/solar/overpaneling.txt ยท Last modified: 2023/11/22 10:31 by frater_secessus