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<< Click to Display Table of Contents >> Simulation variables: DC-grid systems |
  
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<< Click to Display Table of Contents >> Simulation variables: DC-grid systems |
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The following variables are calculated during the simulation process, and available as results:
Meteo and irradiation variables: see previous page.
PV array behaviour
EArrMPP Array virtual energy at MPP (after wiring, module quality and mismatch losses),
Virtual calculation independent of the system state
EArUfix Array virtual energy at fixed voltage
Voltage as calculated by the balance loop (real load voltage),
or line reference voltage when PV-array disconnected.
MPPLoss Loss with respect to the MPP operation
EUnused Unused energy loss (over the user's demand)
Earray Effective energy at the output of the array
IArray Array Current
UArray Array Voltage
ArrayON State / Duration of the PV production of the array
System operating conditions
Esupply Energy from Conventional Power Supply
LigLoss PV to User Line Ohmic Losses
Energy use
E Avail Produced (available) Solar Energy
E Load Energy need of the user (acc. to Load definition)
E User Energy supplied to the user
SolFrac Solar fraction (EUser / ELoad)
U User User Voltage
Efficiencies
EffArrR Array Efficiency: EArray / rough area
EffArrC Array Efficiency: EArray / cells area (=0 when cells area not defined)
EffSysR System efficiency E User / rough area
EffSysC System efficiency E User / cells area (=0 when cells area not defined)
Yr Reference Incident Energy in collector plane = GlobInc [kWh/m²/day]
Yu Normalized Potential PV Production [kWh/kWp/day]
Ya Normalized Array Production = EArray [kWh/kWp/day]
Yf Normalized System Production = EAvail [kWh/kWp/day]
Pr Performance ratio = Yf / Yr.
Lu Normalized Unused energy = Yr - Yu
Lc Normalized Array Losses = Yu - Ya
Ls Normalized System Losses = Ya - Yf