The excitation device is a compact device for exciting synchronous generators and motors with an integrated power section.
It is designed for excitation, monitoring, and synchronization of brushless synchronous machines with a power output in the double-digit megawatt range, as well as for small units with a power output of less than one megawatt.
Features
| Supply voltage | 3 x 230 V AC |
| Direct current | 7.5 A (150 V DC) |
| Voltage regulation | ± 0.2% |
| Overall reactive power / cos(φ) | ± 0.5% |
| Armature current measurement | 1/5 A, single-phase |
| Armature voltage measurement | 100/400/690 V, 3-phase |
| Synchronization voltage measurement | 100/400/690 V, single-phase |
Operation
A web server is integrated into the device for comprehensive and convenient parameterization, diagnostics, and parameter management. Separate parameterization software is not necessary.
Operating modes
- Reactive power control
- Power factor control
- Voltage control
- Excitation current control
- Voltage control disabled (motor operation)
- U/f controller / open loop
- Smooth switching between all operating modes
Limiting and additional functions
- Excitation current limitation: 2-stage, AMZ principle
- Armature current limitation: 2-stage, AMZ principle
- Armature voltage limitation
- Underexcitation limitation via 4 partial straight lines
- Reactive power statics
- Active power stabilization (PSS)*
- U/f reduction
- Mains synchronization*
- Oscillation-free start-up control
Machine monitoring and control
- Generator overvoltage with tripping
- Monitoring of rotating diodes (in brushless machines)*