ABB UUD148AE01 3BHB010088R0001 Excitation Power Controller Module

Basic Parameters
Applicable Platform: ABB AC800PEC, UNITROL5000/6000 Generator Set Excitation System
Power Supply: DC24V, Power Consumption approximately 10W, Protection IP20 (Installed in the cabinet)
Operating Temperature: -25℃~+70℃, With 2500Vrms High Voltage Electrical Isolation Anti-interference Design
Core Functions
Strong Signal Acquisition and Conditioning: Collect the PT terminal voltage of the generator and the strong electrical signal of the CT excitation current transformer, complete voltage reduction, filtering, isolation conversion, and upload to the PPD113 series CPU main control module (3BHE023584R2665).
Trigger Pulse Output: Receive the main control AVR voltage regulation command, generate multiple precise thyristor gate trigger pulses, and issue them to the 3BHB010088R0001 thyristor component to control the conduction angle adjustment of the excitation current.
Switching Quantity Interlock Control: Collect the circuit breaker position, local/far control, various protection DI signals, output fault alarm, trip, fan start/stop DO instructions; Equipped with overvoltage, overcurrent, pulse loss fault self-check and event waveform recording functions.
Version Description
It belongs to the early basic version, with simplified firmware functions, does not support PSS power system stabilizer, advanced redundant diagnosis, suitable for small and medium capacity generator sets; cannot be directly exchanged with UUD148AE02 (R0002), terminals and firmware are incompatible, replacement requires re-downloading excitation parameters and matching firmware.

3BHB010088R0001 Integrated Thyristor Power Component
Core Electrical Specifications
Device Type: Disc Pressed Large Power SCR Thyristor (with built-in gate drive and trigger board)
Rated Parameters: Withstand Voltage 1600V, Rated On-state Current 100A, Surge Peak Current 2000A, On-state Drop 1.2V
Insulation Voltage: 4500V AC, Working Temperature – 40℃~+125℃, Press-fit Installation for Air Cooling / Water Cooling Heat Sink
Single Unit Net Weight approximately 3kg, Three-phase Rectifier Bridge is usually configured with 3 units of this type to form a fully controlled rectifier bridge.
Core Functions
Receive the gate trigger signal issued by UUD148AE01 to complete AC rectification, output adjustable DC excitation current to supply the rotor winding of the generator.
Integrated Hardware Overheat and Overcurrent Protection, in case of faults, quickly block the trigger pulse to avoid power device breakdown and burnout; Supports multi-module parallel intelligent current sharing to ensure three-phase excitation balance and stability.

Upstream and Downstream Hardware Link of the Excitation System
Main Control CPU: 3BHE023584R2665 (PPD113) → Calculation and Voltage Regulation Control Algorithm
High-speed I/O Acquisition: 3BHE014135R0011 (UAD149A0011) → On-site DI/DO, Analog Quantity Acquisition
Pulse Signal Conditioning Board: UUD148AE01 (3BHE014185R0001) → Signal Conversion + Trigger Pulse Output
Power Execution Unit: 3BHB010088R0001 Thyristor Component → Rectifier Voltage Regulation Output Excitation Current
IV. Typical Application Scenarios
Synchronous Generator Self-Excitation Static Excitation System for Thermal Power, Hydropower, and Gas Self-Provided Power Plants; SVG Reactive Power Compensation for Wind Power, Metallurgical Large Power Rectifier Power Supply, Ship Station Excitation Voltage Regulation Equipment.