UNITROL 6000 is ABB's latest and most powerful generation of Static Excitation Systems (SES) and Automatic Voltage Regulators (AVR) designed to deliver high performance control for all kinds of synchronous generators and motors.
Available for output currents up to 10,000A (DC) and ceiling voltages up to 2000V (DC), the new range makes a highly efficient contribution to network stability.
The UNITROL 6000 product range uses the AC 800PEC controller, which has been developed as an extension of the 800Ax control platform to meet the particular high-speed control requirements of power electronics applications such as MV Drives, Frequency Converters and High Current Rectifiers. The compatibility of the 800Ax application software tool with the AC 800PEC platform is an additional important advantage.
For maximum flexibility, UNITROL 6000 is based on reusable thyristor bridge modules. Depending on output current and requested availability, the modules can be connected in parallel. In case of three or more parallel modules, the current sharing among the modules is actively optimized.
The architecture of the main controller depends on availability requirements. While two identical control channels are state-of-the-art for larger generators, high-end applications may require an additional independent back-up controller, which can be implemented in the UNITROL 6000 system. The connection between the various controllers is by fibre-optic serial communication. This ensures electrical isolation and highest possible EMC immunity.