Turbomachinery Package Specification | Titan 250 Generator Set |
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10.2Generator Control
10.2.1Functional Description
The Turbotronic 4 control system working in conjunction with the generator’s excitation system provides control, monitoring, and protection of the generator and its output. The key components are:
•Permanent magnet generator (PMG)
•Rotating
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•CGCM
Figure 19 provides a simplified layout of these components. The exciter armature is mounted on the main generator rotor and generates an AC voltage as it revolves in the magnetic flux produced by the stationary field. The stationary field is wound on salient poles supported by the stator core or frame. The PMG consists of permanent magnets on the generator rotor and a stationary armature, also supported by the generator frame.
The rotating rectifier assembly rectifies the exciter armature AC output to DC. In turn, the DC power is applied to the main generator rotating field windings. The complete exciter is enclosed and protected by a removable cover. When the rotor operates at synchronous speed, the PMG provides power to the CGCM. The CGCM provides the appropriate exciter field current to control the exciter armature output, which is rectified to provide DC power to the main generator rotating field winding.
| GENERATOR |
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| GENERATOR CIRCUIT | |
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| BREAKER | ||
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| BUS |
GENERATOR |
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ARMATURE |
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(Stationary) |
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GENERATOR |
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FIELD | PERMANT |
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RECTIFIER |
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MAGNET | PORTION |
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ASSEMBLY | GENERATOR |
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ROTATING |
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EXCITER |
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ARMATURE |
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EXCITER FIELD |
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(Stationary) |
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| GENERATOR | GENERATOR | CROSS CURRENT | BUS |
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| POTENTIAL | CURRENT | COMPENSATION | POTENTIAL |
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| TRANSFORMERS | TRANSFORMERS | TRANSFORMER | TRANSFORMERS |
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| EXCITATION POWER |
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| EXCITATION OUTPUT | LOAD SHARE LINES | ||
To Turbotronic 4 Control Processor | CONTROLNET |
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| Module or Load Share Module) | ||||
COMBINED GENERATOR CONTROL MODULE
Figure 19. Typical Generator, Exciter, and Generator Control Module Arrangement
© 2008 Solar Turbines Incorporated. All rights reserved. | TPS250GS/908 - Preliminary |
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