SMA Sunny Boy Control - Manual (Page 125)

Sunny Boy Control
SMA Technologie AG
User Manual SUNBC-14:NE0206 121
7.6 “Profile 2” Application
Two default profiles (Profile 1 & Profile 2) can be loaded from
“Setup…Plus I/O…Plus-Function”. “Profile 1” deactivates the Plus functions and
resets all Plus settings to their factory defaults. “Profile 2” requires only an external
sensor (pyranometer or reference cell) to acquire module irradiation data. The follow-
ing is an application example for “Profile 2”.
Powerline
PV panel
°C
Ambient temperature Module insolation
Sunny Boy
Control Plus
Pac
+Gi +Tam
Betrieb
Ope ration Erdschluss
Earth Fault Störung
Failure
Photovolta ik-Stri ngwec hselric hter Photovo ltaic str ing invert er
SWR 1100E
PAC 1273
W
Fig. 7.24: Input parameters for “Profile 2”
The current system efficiency (+etaPV) and the daily energy yield (+PR) can be ob-
tained by comparing and further computing the panel irradiation and the power out-
put of the Sunny Boy inverters. These calculations require the system constants “+A”
(the module surface) and “+etaM” (the module efficiency).