SMA
Technologie AG
Turbine operation
Operating instructions
WB11_17-11:FE4205
Page 35
5.4 General setting example
Please note that the following example only represents a starting point for operating
with a wind generator.
• <UpvStart> is set to the lowest possible value:
This achieves an early switch-on of the Windy Boy.
• <UdcWindStart> is set to the same value of <UpvStart>:
This achieves an early mains grid feed-in. If the wind turbine does not properly
start, or the inverter frequently switches on and off, it is recommended that you
increase <UdcWindStart> in (e.g.) 10 V steps.
• <UdcWindMax> is initially set to approx. 10 % below the maximum MPP voltage
of the Windy Boy:
In this case the slope of the ramp function is relatively flat. The maximum output
power is this only reached with a relatively high DC input voltage, which avoids
"braking" of the wind generator through excessive power consumption. This set-
ting is especially suitable in locations with little or weak wind. Once the properties
of the wind generator are known, then the reduction of the <UdcWindMax> pa-
rameter may be necessary, in order to extract the maximum power from the wind
generator even at low DC input voltages (low wind speeds). The ramp function
will then be steeper.
• <T-Stop> is set to the maximum value:
Here, the inverter remains connected to the mains grid, even at low DC input vol-
tage levels, and "waits" for the next gust of wind. This delays an early switch-off
of the inverter.
• <T-Start> is set to the minimum value:
This achieves a reduction of the switch-on time (please observe the regulations of
the energy supplier responsible).
Contact the manufacturer of your wind generator for the typical properties of
your generator (voltage/power characteristic).
Only change the operating parameters when you know exactly what you are
doing!
Summary of Contents for Windy Boy 1100
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