IS200ERDDH1ABB - IGBT Exciter Regulator/Dynamic Discharge Card

SPECIFICATIONS

Part No.: IS200ERDDH1ABB
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature Operating: -30 to 65 oC
Product Type: IGBT Exciter Regulator/Dynamic Discharge card
Availability: In Stock
Series: EX2100

Functional Description

IS200ERDDH1ABB is an IGBT Exciter Regulator/Dynamic Discharge card developed by GE. It is a part of EX2100 series. It manages the gate drive control mechanism for field excitation, ensuring the proper regulation of field currents within the system. The board facilitates dynamic discharge to regulate excessive DC link voltage, preventing potential overvoltages that could disrupt system stability. The ERDD's multifunctional capabilities in gate drive control, dynamic discharge, feedback monitoring, relay control, and its board identification features play a critical role in ensuring the proper functioning, stability, and reliability of the exciter regulator system within which it operates.

Bridge Feedback System

• Monitors critical parameters such as DC link voltage, output shunt current, output field voltage, bridge temperature, and IGBT gate drive status (including power supplies and desaturation conditions)
• Maintains optimal performance and prevent adverse conditions.

Control of Relays

• In simplex applications, it controls the de-excitation relay (K41), while in redundant applications, it manages the charging relay (K3), contributing to system reliability and functionality.

Connector Pin Signals and Interface

• The specific details of the connector pin signals are described in the dedicated section titled Application Data, providing a comprehensive understanding of the ERDD's interface mechanisms.
• It is a single-slot double-height (6U) form factor board, incorporating both P1 and P2 backplane connectors for integration. Its surface houses seven connectors facilitating connections with interfacing boards.

Board ID Device

• Embedded within the ERDD is a board ID device containing essential identification information such as the barcode serial number, board type, and hardware revision.
• This ID device interfaces with the M1 or M2/C control associated with the specific backplane slot, enabling communication and control functionalities.

Voltage Presence and Isolation

The ERDD encompasses both control and DC link voltages within its system architecture. Notably, there exists robust isolation between the control power and any circuit or component connected to the IGBT bridge, ensuring operational safety and preventing interference.

Power Sources and Circuits

Non-Isolated Control Circuits:

• Non-isolated ERDD control circuits draw power directly from the Exciter Power Supply Module (EPSM) input via the P1 and P2 backplane connectors.
• Power for IGBT gating is also sourced from the EPSM input, contributing to the functional operations of these circuits.

Dynamic Discharge (DD) Power Sources:

• DD functionality is powered from two distinct sources: the EPSM input and a dedicated redundant power source contained within the ERDD.
• The redundant power source is directly derived from the DC link bus, offering an additional power supply for enhanced system reliability.
• DD circuits autonomously monitor the DC link voltage and implement control actions when necessary, operating independently from the control processor.

Dynamic Discharge DC-DC Power Converter:

• One secondary winding from the transformers is utilized in the dynamic discharge DC-DC power conversion process, contributing to efficient power management and distribution.

Isolated Power Supplies

• The ERDD features six isolated power supplies that originate from the secondary windings of two transformers located on the board. These isolated power supplies serve specific functions within the ERDD circuitry, ensuring electrical isolation and enhancing operational reliability.

The WOC team is always available to help you with your EX2100 requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS200ERDDH1ABB?
It is an IGBT Exciter Regulator/Dynamic Discharge card developed by GE under the EX2100 series.

How is power distributed within the ERDD?
It manages control and DC link voltages, ensuring isolation between control power and IGBT bridge components. Non-isolated control circuits draw power from the Exciter Power Supply Module (EPSM) via P1 and P2 connectors.

What powers the Dynamic Discharge (DD) function?
DD is powered by the EPSM input and a redundant power source derived from the DC link bus within the ERDD. It autonomously monitors and controls the DC link voltage.

How many isolated power supplies are present in the ERDD?
Six isolated power supplies originate from secondary windings of two transformers on the ERDD, ensuring reliability and electrical isolation.