Increasing The Power Output
To increase the power output, the engineer turned his power controller, which had the following effects:
- More fuel was injected into the combustion chamber
- The speed governor was adjusted to achieve a higher rotation speed
- The overload protector noticed an overload situation (rotation speed lower than the target speed) and lowered (!) the load on the turbine
Because of the lower load and the more fuel being injected, the rotation speed increased (up to 300 rpm at the generator under full load) and at some point the turbine reached its target speed, where the load was increased again up to the desired level to reach a new equilibrium between the turbine's power output and the power needed by the traction motors.
To decrease the load, the same processes happened in the opposite direction.
Read more about this topic: SBB-CFF-FFS Am 4/6 1101, Technology
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