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GEARBOX
A multi-stage planetary / spur
wheel gearbox ensures highest possible mechanical efficiency and power.
The first planetary gear stage takes up the slow rotor movement and
distributes the high torque input to subsequent planetary gears.
High levels of manufacturing
accuracy and FEM calculation of the planet carrier ensure optimal load
distribution to the planet gears. Reduced torque values and increased
rotational speeds are better transformed to the high speed operation of
the generator.
A permanent, mechanically
driven oil pump supplies the gearbox and main shaft bearings with
pressure lubrication.
The micro-filter system
retains the quality of the oil and assures an extended
service-interval. The oil cooling device renders temperature
optimization even under full load operation.
GENERATOR
A 4/6-pole high-speed
asynchronous generator allows semi-variable speed operation for
achieving very high efficiency values.
The moisture-repellant
insulation in high class F configuration combined with a forced surface
air cooling system guarantees total protection from moisture and dust.
A welded squirrel cage,
vibration-resistant windings and a re-greasing device with grease
collecting chamber result in increased service-life and longer
maintenance intervals.
The optimized generator slip
and efficiency curve accompanied by a multi-stage logic controlled
compensation bank leads to a system power factor of 0.99.
HYDRODYNAMIC FLUID COUPLING
The generator is connected to
the high-speed gearbox shaft by a hydrodynamic fluid coupling. The
coupling parts are not mechanically connected and therefore are not
subject to wear.
Torque is transmitted by the
rotating oil of the couplings accelerated by radial turbine blades.
This advanced coupling technology allows shock load-free operation,
excellent peak load protection and vibration separation.
"Free adjustable torque
limitation" feature of this coupling offers ample protection against
overload and grid outages. |