SMA
Technology AG
Unit description
Operating instructions
WB50_60-11:FE4105
Page 13
3 Unit description
3.1 Appropriate usage of the Windy Boy 5000 / 6000
The Windy Boy 5000 / 6000 is designed for the conversion of DC voltage from a
wind turbine (permanent magnet generator) into AC voltage for feeding into the
public mains supply. The technical data are described in more detail in chapter 9
"Technical data” (page 49).
Many wind turbine manufacturers offer an extra over-voltage protection module.
These components prevent the destruction of the downstream Windy Boy in the case
of overvoltage.
Overvoltage can occur under the following conditions:
• High turbine rotation speeds under strong wind conditions
• An increase in turbine rotation speed caused by load-shedding when the Windy
Boy is disconnected from the mains supply e.g. in the case of mains interference
or power outage.
The overvoltage protection system has the following tasks:
• When a pre-defined voltage is reached, the Windy Boy is disconnected from the
generator and a short-circuit slows the generator and/or brings it to a standstill.
• Some devices reduce the turbine rotation speed, and thus the generator output
voltage, by switching in a resistor assembly (Dumpload). The electrical energy
generated by the turbine is then converted to heat.
Converter
Wind Generator
Windy Boy
Public Mains Grid
Control unit
Rectifier
Control unit
Overvoltage Protection
Netzw
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Grid tie
d inve
rter for
wind tu
rbines
Windy
Boy
Netzwe
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Winden
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Grid tie
d inve
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wind tu
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Pac
903W
Upv
3
30V
Summary of Contents for Windy Boy 5000
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Page 12: ...Safety information SMA Technology AG Page 12 WB50_60 11 FE4105 Operating instructions ...
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Page 32: ...Maintenance and care SMA Technology AG Page 32 WB50_60 11 FE4105 Operating instructions ...
Page 38: ...Turbine operation SMA Technology AG Page 38 WB50_60 11 FE4105 Operating instructions ...
Page 40: ...Maintenance and care SMA Technology AG Page 40 WB50_60 11 FE4105 Operating instructions ...
Page 66: ...Stand alone systems SMA Technology AG Page 66 WB50_60 11 FE4105 Operating instructions ...
Page 68: ...Contact SMA Technology AG Page 68 WB50_60 11 FE4105 Operating instructions ...
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