What is the torque angle of a alternator?
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An alternator power output is directly proportional to the sine of its load angle.
So the maximum power output from the alternator would occur when the load angle is 90 degrees.
But still the load angle is maintained between 20 and 30 degrees.
This is done to ensure the stability of the power system in which the alternator is connected.
The load angle of 90 degree is known as the point of critical stability , if the load angle exceeds this value then the alternator will become unstable and its speed can go out of control.
To ensure that this situation never occur the alternator is always operated at a load angle of 20-30 degrees.
So the maximum power output from the alternator would occur when the load angle is 90 degrees.
But still the load angle is maintained between 20 and 30 degrees.
This is done to ensure the stability of the power system in which the alternator is connected.
The load angle of 90 degree is known as the point of critical stability , if the load angle exceeds this value then the alternator will become unstable and its speed can go out of control.
To ensure that this situation never occur the alternator is always operated at a load angle of 20-30 degrees.
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