IS200EPSMG1AED - Exciter Power Supply Module

SPECIFICATIONS:

Part Number: IS200EPSMG1AED
Manufacturer: General Electric
Series: EX2100
Number of trip solenoids: 3
Trip Solenoid Rating: 125 V dc
Product Type: Exciter Power Supply Module
Technology: Surface Mount
Common Mode Voltage Range: ±5 V
Dimensions: 17.8 cm wide x 33.02 cm
Operating temperature: 0 to 60 °C
No.of Analog Voltage Inputs: 6
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEI-100462A

FUNCTIONAL DESCRIPTION:

IS200EPSMG1AED is an Emergency Trip Terminal Board manufactured and designed by General Electric as part of the EX2100 Series used in GE Excitation Control Systems. The Exciter Power Supply Module (EPSM) is used in the EX2100 Excitation Control System and the EX2100 Regulator Control. EPSM Group 1 modules (EPSMG1) are used in the excitation control system and EPSM Group 2 modules (EPSMG2) are used in the regulator control. EPSMG2 includes an Exciter Regulator Power Supply Daughter board (EPSD) mounted to it. The EPSM is comprised of 2 major sections, a buck regulator and a push-pull inverter. The buck-regulator converts the input voltage to a 50 V DC intermediate voltage. This intermediate voltage is then applied to a push-pull inverter to create the required multiple output voltages. The transformer used in the push-pull inverter provides high-voltage isolation between the input voltage source and the output supplied to the control system.

EX2100 EXCITATION CONTROL SYSTEM APPLICATION:

EPSMG1 converts 125 V dc from the power distribution module (PDM) into the voltages required for the EX2100 excitation control. Three independent EPSMG1s supply power to each of the controllers M1, M2, and C. They are mounted in the Exciter Power Backplane (EPBP) located below the Exciter Backplane (EBKP) in the control cabinet. Connectors P1 and P2 carry power from the EPSMG1 to EPBP for cables to EBKP and other boards. The EPSMG1 supplies +5 V dc, ±15 V dc, and +24 V dc to the control assembly backplane. Power is also supplied to external modules as follows:

• ±24 V dc to power the fans, de-excitation module, crowbar module, ground detector module, and field voltage/current module.
• Isolated +70 V dc for contact wetting to the terminal boards.

EX2100 REGULATOR CONTROL APPLICATION:

EPSMG1 converts the dc link bus voltage into the voltages required for the EX2100 regulator control. In simplex systems, one EPSMG2 is mounted in the Exciter Regulator Backplane (ERBP). In redundant systems, one EPSMG2 is mounted in ERBP (M1) and a second EPSMG2 is mounted in the Exciter Regulator Redundant Backplane (ERRB, M2/C). The EPSD that is mounted on EPSMG2 modifies the power input path to allow EPSMG2 to accept higher voltages by increasing the creep and clearance. It also provides a fuse between the regulator power source (DC link) and the buck regulator.

• ±24 V dc (P24B/N24B) to power fans, relays, and the dc feedback board.
• Isolated +70 V dc (P70) for contact-wetting on the terminal board, dynamic discharge board, and redundant relay board.
• Isolated 20 V ac (AC17) to power the IGBT gate and dynamic discharge board.
• ±55 V dc (P55/N55) to the ground detector circuits on the options card.

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FREQUENTLY ASKED QUESTIONS:

What is an Exciter Power Supply Module?

An Exciter Power Supply Module is a critical component in power generation and turbine control systems, providing the necessary electrical power to the exciter system, which, in turn, supplies excitation to the generator's rotor. It ensures the stability and efficient functioning of the electrical system in turbines.

What does the Exciter Power Supply Module do?

The primary function of the Exciter Power Supply Module is to regulate the voltage supplied to the exciter, which in turn controls the excitation levels of the generator’s rotor. This ensures the generator operates smoothly, maintaining system stability and voltage regulation.

What types of systems use an Exciter Power Supply Module?

Exciter Power Supply Modules are typically found in turbine control systems, and used in steam turbines, gas turbines, and hydroelectric power plants. They are integral to systems that require precise voltage control and stable power output.