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ABB OCAH 940181103｜Analog Voltage Feedback Board ｜
Core functions (extracted from original drawings)
Collect simulated feedback signals of synchronous generator terminal voltage/DC drive armature voltage;
Complete the level conversion, scaling, impedance matching, and low-pass filtering of AC/DC voltage signals;
Gain adjustable calibration is achieved through onboard multi turn precision potentiometers, matching the input range of the regulator;
Provide standardized feedback signals to the AVR voltage regulator to form a voltage closed-loop control outer loop;
Isolate strong and weak electrical signals to suppress on-site harmonic interference;
Pure analog operational circuit (operational amplifier network), without microprocessor.
System positioning
Voltage loop feedback conditioning unit; The voltage closed-loop of the unit is essential, and it forms a dual loop signal preprocessing with the OCAH current board.
OCAH 940181103
ABB OCAH 940181103｜Analog Voltage Feedback Board ｜
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