Differences

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--- electrical:solar:status [2022/08/09 12:11]
frater_secessus [in absorption]
+++ electrical:solar:status [2023/07/13 18:44]
frater_secessus [sudden voltage spikes]
@@ Line 81: / Line 81: @@
-**During [[electrical:12v:charging#absorption#absorption_stage|Absorption]] charging** lead-acid batteries will need less and less current.
+**During [[electrical:12v:charging#absorption#absorption_stage|Absorption]] charging** batteries will need less and less current.
 **with MPPT controllers**
@@ Line 182: / Line 182: @@
+===== sudden voltage spikes =====
+If you are seeing sudden voltage spikes and have lithium batteries, you may be seeing [[opinion:frater_secessus:lifepo4_charging_voltage|the BMS disconnect charging]].
+===== MPPT tracking sweeps =====
+An **MPPT** controller sweeps the **P**ower **P**oints along the array voltage curve in order to **T**rack the **M**aximum (and non-maxiumum) power points.
+Depending on the algorithm the sweep may be local to the present Vpanel, or may be a sweep from 0v-Voc, or anything in between.  It may happen often or seldem.
+The sweep will interfere with power production so the mfg attempts to find a balance between
+  * constant production, and
+  * learning whether or not one is operating at the ideal power poing

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