Installation and Operator’s Manual
Page 6 of 20
(Aurora Wind Interface Rev 4.0)
1 Wind Box Interface Description - WBI
The AURORA Wind Box Interface is an integral part of the wind energy system.
The WBI serves four purposes.
•
To rectify the “Wild AC” from wind turbine generator into DC input for the
inverter.
•
Diversion Load Control: The unit may apply to the turbine an external
additional
resistive load (not provided) when the rectified DC voltage exceeds 530Vdc.
This function may extend the use of the product with some kind of high voltage
turbine.
The diversion load activation may occur with high winds, severe gusts and when
the utility grid fails.
WARNING
: This is only helpful to extend the usable wind range and to contain the input
voltage for the connected Inverters. Never use it as safety brake. The turbine must have his
proper safety brake, mechanical or electronic.
•
Overvoltage protection: embedded crowbar activation for rectified DC voltage
higher than 600Vdc. Impedance lower than 1 Ohm
•
Wind Speed feed-back: The Wind speed feed-back is based on the frequency
of the “Wild AC” input from the wind turbine generator.
