SMA WB 5000-US - Manual (Page 6)

SMA America, LLC Turbine operation
Addendum operating requirements DBWB50-80US-UUS113611 6/12
The Windy Boy also has a soft-start parameter "P-Wind-Ramp". This parameter protects the
mechanical components of your wind turbine system and thus contributes to a longer system life.
Other adjustments are possible to optimize the maximum performance of the Windy Boy with a
particular small wind turbine system, by adjusting the regulation speed and also by setting the
switch‑off and switch-on times ("T-Stop", "T-Start").
3.2 Characteristic curve operation
Switch-on procedure
During the startup phase, the small wind energy system is running almost load-free. The Windy Boy
only requires the power needed to supply the on-board electronics. If enough on-board power is
available, this operating status is indicated by simultaneous lighting-up of the three light-emitting
diodes (LEDs) on the cover.
As soon as the DC input voltage defined in the parameter "Vpv-Start" is reached, the Windy Boy
begins a number of self tests, measurement processes and synchronizes with the grid. This status is
indicated by a blinking green LED.
If the self tests are successfully completed, and the DC input voltage remains above the value defined
in "Vpv-Start" for the time defined in "T-Start", the Windy Boy connects to the grid. This status is
indicated by a continuosly lit green LED.
The inverter then switches into characteristic curve operation and regulates the input current based on
the voltage of the wind turbine system. The power defined in the characteristic curve for the wind
turbine system is thus fed into the grid. This status is indicated by a continuosly lit green LED.
Here you should be able to abserve that, as the inverter switches into characteristic curve operation,
the small wind energy system is placed under load, i.e., the rotational speed and the DC input voltage
should fall. The amount by which the input voltage decreases depends on the small wind energy
system being used.
Characteristic curve operation
The characteristic curve of the Windy Boy only approximates the actual characteristics of a real
small wind energy system. Consult the manufacturer of your wind generator for its typical
characteristics before changing the curve parameters.