SMA Windy Boy WB 1100LV, Руководство пользователя

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SMA Technologie AG Turbine Operation
User Manual WB1100LV-11:FE2606 Page 35
6.4 General Example Settings
Note that the following example only represents a starting point for operation with a
wind turbine.
•
<UpvStart> is set approximately 20 % lower than the lower limit of the Windy
Boy's MPP range:
- This results in early activation of the Windy Boy.
• <UdcWindStart> is set to the lower limit of the Windy Boy's MPP range:
• This results in early grid feeding.
• <P-Wind-Mid> is set to approximately 1/5 of the Windy Boy's maximum AC
power.
•
<UdcWindMid>
is set in the upper third of the voltage range between
<UdcWindStart> and <UdcWindMax>. The selection of this point divides the
curve into a weak and a strong wind range, and is decisive for optimal adjustment
of output according to your wind turbine. It is to be noted that the curve is flat in
the weak wind range, and climbs more steeply in the strong wind range. The flat
curve in the weak wind range prevents the wind turbine from "braking" due to
excessive power extraction, and thus provides good startup properties.
• The steeper curve section causes a strong increase in power extraction upon
higher DC input voltages. This behavior corresponds to typical wind turbine
properties.
• <UdcWindMax> is initially set approximately 10 % below the Windy Boy's
maximum MPP voltage:
Once the properties of the wind turbine are known, reduction of the
<UdcWindMax> parameter may be advisable, in order to extract the maximum
power from the wind turbine even at low DC input voltages (low wind speeds).
The second curve section then increases more steeply.
• <Pmax> is set to the wind turbine's maximum output power:
This allows the Windy Boy's maximum AC power to be optimally adjusted to the
wind turbine used. This prevents the generator from being overloaded by
excessive power extraction.
• <T-Stop> is set to the maximum value:
Here, the Windy Boy remains connected to the grid, even at low DC input voltage
levels, and "waits" for the next gust of wind. This delays an early switch-off of the
Windy Boy.
• <T-Start> is set to the minimum value:
Ask the manufacturer of your wind turbine about its typical generator properties
(voltage/power characteristic).