Woodward 9905-096

Product Overview

The Woodward 9905-096 is an Automatic Generator Loading Control (AGLC) module designed to manage the loading and unloading sequences of engine-generator sets in power generation systems. As a member of Woodward’s AGLC series, the Woodward 9905-096 interfaces directly with Woodward electronic speed controls to provide smooth, automated transitions when bringing a generator online or taking it off the bus, preventing sudden mechanical or electrical surges that can stress engine components and disrupt power quality .

The Woodward 9905-096 serves a critical role in power management architectures where synchronized generators must share loads or transition power to a utility grid. It eliminates the need for manual operator intervention during the sensitive loading phase, ensuring that the prime mover is loaded at a controlled, linear rate that respects the engine’s thermal and mechanical limits . This capability is particularly valuable in cogeneration plants, peak-shaving facilities, and emergency backup systems where generators must come online smoothly without disturbing critical processes .

In practical field applications, the biggest challenge with paralleling generators is not synchronization itself but the “thump” when the breaker closes and immediately applies a large load to the generator, or the voltage dip when load is suddenly dumped back onto the bus. The Woodward 9905-096 solves this by providing true soft loading and unloading through controlled electronic ramps that gradually transfer power over seconds or minutes rather than milliseconds . The module tracks the existing load on the generator set and ramps the load up at a preset rate until the generator matches system frequency and voltage, ensuring bumpless transfers that protect both the engine and the electrical system .

Technical Specifications