Überblick
Our new generation of excitation systems offers the user configurable control structures following IEEE 421.5.
This allows brushless, static and compounded excitation devices to be implemented for synchronous machines in regenerative and motor operation on the mains or converter, at mains frequencies from 16.7 to 400 Hz.The XD3S excitation system is intended for operation on synchronous machines with medium to high excitation current or auxiliary excitation current requirements. The basic system consists of an SC1200 control unit and one or more gate units.
Several remote GU3006 thyristor gate units can be operated for parallel thyristor bridge operation or to implement various redundancy scenarios.
Characteristics
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Operating voltage: 24 V DC ±20 % Control deviation: 0,25 % Suitable for: Synchronous machines |
Synchronization voltage: 3 x 800 V AC Early network detection from: 8 V
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Bedienung
Operation
Parameterization is performed via the powerful EM3000 Engineering Manager, which is available as PC application software and is connected to the controller via the Ethernet service interface.
Primärfunktionen
Operating modes
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Voltage control (PID) |
Excitation current control (PID) |
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Uf-controller / open loop operation |
Bumpless switching between all operating modes |
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Reactive power statics |
Active power stabilization |
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Operating modes and setpoints controllable via galvanic inputs or Modbus |
Power factor correction (PID) at machine or grid transfer point |
Limiters and additional functions
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Armature current limitation for mains and short-circuit operation (AMZ with maximum current stage) |
Reactive power statics, reactive current compensation control for parallel synchronous machines |
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Under-excitation limitation, definition via straight line segments |
Excitation current limitation (AMZ with maximum current stage) |
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Active power stabilization PSS2A, B, C Excitation control, overshoot-free (soft start) Static voltage maintenance / reactive power provision according to VDE-AR-N 4110 / 4120:2018-11 (section 10.2.2) |
V/f reduction Setpoint synchronization for redundant systems Grid synchronization |
Machine monitoring and control
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Stator voltage monitoring UMZ, 3-stage Diode fault detection in brushless operation
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Stator current monitoring UMZ, 3-stage Thyristor bridge monitoring:
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