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SEE 3433

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SEE 3433. MESIN ELEKTRIK. SYNCHRONOUS MACHINES. Power and Torque Characteristics ... If |Z| = Xs hence = 90o. Power and Torque Characteristics. P, T. 90o. Pmax. Tmax ... – PowerPoint PPT presentation

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Title: SEE 3433


1
SEE 3433 MESIN ELEKTRIK
SYNCHRONOUS MACHINESPower and Torque
Characteristics
2
Power and Torque Characteristics
Let Vt Vt ?0o
Ef Ef ??o
Complex power is given by
S Vt Ia P jQ
3
Power and Torque Characteristics
S Vt Ia P jQ
If Z Xs hence ? 90o
4
Power and Torque Characteristics
5
Power and Torque Characteristics
The machine will loose synchronism when the power
angle, ? greater than 90o
e.g. generator operation. As prime mover power
increased, generator need to produce torque to
pull machine to synchronism limit when ?90o
The Tmax or Pmax can be increased by increasing
the field excitation
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