EXPERIMENT 5: 3 Phase Synchronous Machine Connected as a ...
EXPERIMENT 5: 3 Phase Synchronous Machine Connected as a ...
EXPERIMENT 5: 3 Phase Synchronous Machine Connected as a ...
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IntroductionIn a three ph<strong>as</strong>e synchronous generator, the magnitude of the generated off-loadvoltage is dependent on the speed and the exciter voltageThe rotor of the generator is driven by the drive machine. A static magnetic field,with respect to the rotor, is produced in the exciter winding by a dc voltageA rotating field is produced in the stator due to the rotation of the rotor, whichinduces voltages in the stator windings, 120 o out of ph<strong>as</strong>e with each other. Thegenerator thus produces a three ph<strong>as</strong>e voltageA dc shunt wound machine is recommended <strong>as</strong> drive machine because ofsimplicity in its connection and good control of the revolution speed whichremains relatively constant over a wide range with incre<strong>as</strong>ing loads. Connectionof the drive motor is shown belowL+tR FsR AA1ME1E2A2L-PEFig 5.35
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