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THEORY OF OPERATION
FIGURE E.3 – FIELD EXCITATION AND AUXILIARY POWER
|
| REACTOR |
|
| OUTPUT |
|
| TERMINALS |
|
| STATOR |
ENGINE | MECHANICAL |
|
| ROTATION |
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| ROTOR | ROTOR |
| SLIP |
|
| RINGS |
|
|
| STATOR |
| CAPACITOR |
|
|
| 115 AND 230VAC |
|
| RECEPTACLES |
| RHEOSTAT | BRIDGE |
|
|
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ROTOR FIELD FEEDBACK AND AUXILIARY POWER
The AC voltage developed in the field winding is fed to the full wave bridge. The DC output of the bridge is fil- tered by the field capacitor and controlled by the out- put rheostat.
This filtered and controlled feedback voltage is fed to the rotor winding via the brush and slip ring configura- tion. As the feedback voltage is increased or de- creased, the outputs of the weld and auxiliary wind- ings are likewise increased or decreased.
When full field voltage is applied to the rotor and the engine is running at high speed (3700 RPM), a 230 VAC voltage is developed in the stator auxiliary wind- ing. This winding is tapped to provide 115 VAC. The two voltages (115 VAC and 230 VAC) are connected to the appropriate receptacles and offer 4000 watts (total) of AC power.
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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
