Gain and stability adjustments tailor the governor’s response to the specific engine. EPG controllers with switch-selected dynamics allow stable operation at no load and brisk response when the unit is heavily loaded.The EPG is designed for precise speed control of diesel, gas, gasoline engines, and gas turbines. The governor is especially suited to prime movers without a mechanical drive or hydraulic oil supply for the governor and which have low-mass, low-friction fuel linkages. Controls are built with dynamics designed for specific engine applications.
Units with start fuel limit can prevent startup overspeed
and excessive startup smoke. The start fuel limit is automatically removed when the engine nears selected speed. The EPG is compatible with a full line of Woodward accessories providing for various levels of precision control of electrical generation or other processes. Custom installation kits for a number of engines are available from Woodward. An EPG system with position feedback from the actuator provides start-fuel limiting, actuator compensation, droop, and added stiffness. A stronger 5.4 J (4 ft-lb) 4012/24 EPG system is described in Product Specification 82043.
Generator Load Sensor
The Load Sensor is used with the isochronous speed control to provide droop or isochronous load-sharing capabilities. It allows the use of the SPM-A Synchronizer, Process and Import/Export Control, AGLC, or APTL (see Product Specification 82314). The single-phase droop speed control can load share in droop. The isochronous speed control can load share through the use of an accessory load sensor. If accessories are required with a droop system, use the isochronous speed control with a load sensor to provide droop.