Characteristic Curve Operation In "Turbine" Operating Mode - SMA Windy Boy 1100 Operating Instructions Manual

Turbine operation
5.3 Characteristic curve operation in "Turbine" opera-
ting mode
Please note: The linear characteristic curve of the Windy Boy only approxi-
mates the actual characteristics of a real wind generator. Consult the manufac-
turer of your wind generator for the typical characteristics of your generator
before changing the characteristic curve parameters.
As soon as the DC input voltage defined in the parameter <UpvStart> is reached, the
inverter begins a number of self tests, measurement processes and synchronizes with
the mains grid. If the self tests are successfully completed, and the DC input voltage
remains above the value defined in <UpvStart> for the time defined in <T-Start>, the
inverter connects to the mains grid.
As soon as the DC input voltage reaches the value defined in <UdcWindStart>, the
inverter begins feeding power into the mains grid. As you can see from the charac-
teristic curve, the power fed into the mains grid rises with the DC input voltage.
As soon as the DC input voltage reaches the value defined in the parameter <Udc-
WindMax>, the Windy Boy feeds the mains grid with the maximum possible power.
If the input voltage continues to rise, the Windy Boy continues to feed the mains grid
at maximum power.
The characteristic curve ends at the maximum permissible input voltage of the Windy
Boy, which must never be exceeded.
If the wind strength is so low that the DC input voltage falls below <UpvStart>, then
the inverter ceases feeding power into the mains grid for the period defined in <T-
Stop>.
If the DC input voltage increases again, then the Windy Boy will again operate ac-
cording to the characteristic curve.
If the DC input voltage falls below the internally calculated minimum operating value
of <Umin>, then there is insufficient energy for the on-board electronics and the Win-
dy Boy will switch off.
If the DC input voltage lies between <Umin> and <UpvStart> for the time defined by
<T-Stop>, then the inverter will also switch off.
After the switch-off process, the whole process begins anew.
Only change the operating parameters when you know exactly what you are
doing!
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SMA Technologie AG
Operating instructions