User Tools

Site Tools


ac_coupling:start

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
ac_coupling:start [2020-09-03 10:56]
guy_stewart removed accubank?
ac_coupling:start [2021-04-12 03:03] (current)
guystewart [Monitoring]
Line 71: Line 71:
  
 ==== 3.1 Lead batteries ==== ==== 3.1 Lead batteries ====
-1 kWp installed PV power requires approximately 5kWh of battery:+1 kWp installed PV power requires approximately 5kWh of lead acid battery:
   * 100 Ah at 48 Vdc   * 100 Ah at 48 Vdc
   * 200 Ah at 24 Vdc   * 200 Ah at 24 Vdc
   * 400 Ah at 12 Vdc   * 400 Ah at 12 Vdc
  
 +Each additional 1 kWp of AC PV will require an additional proportional 5 kWh increase in lead acid battery storage. 
 ==== 3.2 Lithium batteries ==== ==== 3.2 Lithium batteries ====
-1,5 kWp installed PV power requires:+1,5 kWp installed AC PV power requires 4.8 kWh of battery storage:
   * 100 Ah at 48 Vdc   * 100 Ah at 48 Vdc
   * 200 Ah at 24 Vdc   * 200 Ah at 24 Vdc
   * 400 Ah at 12 Vdc   * 400 Ah at 12 Vdc
  
 +Each additional 1.5 kWp of AC PV will require an additional proportional 4.8 kWh increase in battery storage. 
 ===== 4 Requirement of adding DC-Coupling - MPPT Solar Chargers ===== ===== 4 Requirement of adding DC-Coupling - MPPT Solar Chargers =====
  
Line 89: Line 91:
  
 Reason: recover from deadlock situation of AC-Coupling only situation. Reason: recover from deadlock situation of AC-Coupling only situation.
 +
 +There is no Factor 1.0 limit that applies for DC coupled PV through a Victron MPPT. Nor is there a specific minimum amount of battery storage capacity, though please follow battery manufacture specifications for maximum charge rates. A rule of thumb is C10 (10% of Ah capacity in A) for lead acid batteries, and C2 (50% of Ah capacity in A) for lithium batteries. 
  
 ===== 5 Software configuration ===== ===== 5 Software configuration =====
  
-Multis and Quattros with factory settings will not shift the AC output frequency to regulate charge current. When setting up an AC Coupled system, install either the [[ess:start|ESS Assistant]] (for grid-connected systems) or the [[:assistants:pv-inverter-support]] (for off-grid systems).+Multis and Quattros with factory settings will not shift the AC output frequency to regulate charge current. When setting up an AC Coupled system, install either the [[ess:start|ESS Assistant]] (for grid-connected systems) or the [[:assistants:pv-inverter-support]] (for off-grid systems).  
 + 
 +The Inverter RS will automatically shift frequency without any additional configuration required when a surplus/back-feed of AC is detected on the AC-output.
  
 Other options, __all deprecated__, are: Other options, __all deprecated__, are:
Line 101: Line 107:
 ===== Monitoring ===== ===== Monitoring =====
  
-See [[ccgx:start|section 1.5 in the GX manual]].+See [[https://www.victronenergy.com/media/pg/Cerbo_GX/en/installation.html#UUID-347e92f6-0d4b-eef5-9787-22fbcb9aa13c|Connecing a PV inverter section of the GX manual]].
  
 ===== DISQUS ===== ===== DISQUS =====
 ~~DISQUS~~ ~~DISQUS~~
  
ac_coupling/start.1599123380.txt.gz · Last modified: 2020-09-03 10:56 by guy_stewart