Superwind 350 12V, Manual

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V 01-2017
www.superwind.com
38
9.3 Power control
As described earlier in Section 4.3.b (Page 14) the
Superwind
is equipped with a unique
aerodynamic, feathering rotor control system. This over-speed control also helps ensure
known electrical output in high wind speeds, adding to the unit’s autonomous operation
and safety.
Function:
The rotor blades are pivoted and can adjust their pitch angle to leeward.
Below nominal wind speed, the controller keeps the pitch angle in normal
position. Above nominal wind speed, the rotor control system adjusts the
blade pitch exactly to the specific angle that keeps the power output
constant.
9.4 Over-speed Protection
The
Superwind
is equipped with an automatic rotor control system which incorporates an
Over-speed Control mechanism. The over-speed controller system works in all wind
speeds, even without an electrical load on the turbine. Although it is not a normal
operation mode, an unloaded turbine (meaning the turbine is disconnected from the
batteries) could occur under certain conditions (e.g. blown fuses, malfunction of the
charge regulator or electrical failures caused by overvoltage or a lightning strike). It is
important to try to avoid an unloaded turbine condition at all times.
Function:
The rotor control system responds to both aerodynamic and
centrifugal forces affecting the rotor blades. Due to the special
geometric rotor blade layout and the matched rotor controller
mechanism, the rotor at no-load operation first accelerates to an
increased idle-speed. The idle-speed will be kept on a nearly
constant level, only slightly speeding up if the wind speed
increases. That way, during no-load operation, the rotor control
system provides extra safety against high centrifugal forces and
guarantees a very high level of safety.