The ABB UNITROL and Synpol D series are specialized excitation systems designed for the control of synchronous generators and motors. The architecture comprises high-power rectifier bridges, digital control boards (SDCS series), and 3BHE-coded communication interfaces. Technical characteristics include dual-channel redundancy, high-speed field current regulation, and advanced grid stability features such as Power System Stabilizers (PSS). Functionally, these systems manage the magnetic field of large rotating machines to ensure precise voltage regulation and reactive power control. Ideal for power plants and heavy industrial facilities, UNITROL solutions provide the critical stability required to synchronize generators with the grid and protect against electrical faults.
