PSMS Controls

Excitation System Services by PSMS Controls

Ensuring Optimal Generator Performance

The excitation system is a critical component for regulating a generator's terminal voltage within its operating range. It generates variable DC voltage and current to the rotating field, ensuring stable and efficient operation.

Types of Excitation Systems

Brushless Excitation Systems

Utilizes rotating exciter machines and an Automatic Voltage Regulator (AVR). Ensures effective voltage regulation without brushes.

Static Excitation Systems (SES)

Directly feeds the rotor using thyristor bridges via brushes. Designed for precise control of generator terminal voltage.

Digital Exciters

Modern turbine generator sets, especially those built after 1990, often include digital excitation systems. While these systems are technologically advanced, support challenges may arise due to:

OEM discontinuation of parts or services.

Lack of experienced OEM engineers.

High costs associated with OEM services.

Our Expertise

We specialize in General Electric (GE) Gas and Steam turbine excitation systems, including:

EX2000, EX2100, EX2100e.

Brushless and Static Excitation Systems.

Analog Exciters.

Analog Exciters

Analog exciters have a proven track record of reliability. However, as these systems age, plant operators face the decision to either maintain or upgrade them.

Upgrade with Precision

A cost-effective approach can involve retaining reliable rectifier bridges while replacing outdated analog controls. This strategy provides a balanced solution for modernizing your excitation system.