Überblick
Our excitation devices are equipped with a thyristor controller for driving external thyristor-based power circuits.
This thyristor controller for external power circuits can be integrated within the device or be connected via a bus, in order to, for example, physically separate the control and power subsystems.
The XD2S family is a system of compact devices for synchronous machine excitation with two basic configurations. The devices can be either integrated with the power circuit or control/drive an external circuit for excitation and monitoring of machines in the range of hundreds of megawatts, and can also be used for smaller units of a megawatt or less.
Characteristics
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Voltage: 24 V DC |
Synchronization voltage: 3 x 10 … 450 V AC |
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Control accuracy: ± 0.5 % |
Early grid detection: from 10 V AC |
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Applications: synchronous machines |
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Bedienung
Operation
For easy, comprehensive parameter management and diagnosis, we provide the EM2. Additional options are available for special applications.
Primärfunktionen
Operating modes
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Reactive power control |
Power factor control |
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Voltage control |
Excitation current control |
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Reactive power statistics |
Stabilization of real power |
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V/f droop control |
Voltage control blocked (motoring) |
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Power factor control cascaded on excitation current control (motoring) |
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Limiters and additional functions
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Excitation current limiter: 2 stage, time-overcurrent principle |
Armature current limiter: 2 stage, time-overcurrent principle |
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Armature voltage limiter |
Under-excitation limiter |
Machine monitoring and control
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Generator overvoltage with release |
Monitoring of rotating diodes (for brushless machines) |