A script on Woodward governor

Woodward governor

This electro-hydraulic type of governor is used on many machine eg. Steam turbine to run on a constant revolution per minute, diesel generator to run the alternator on a contant revolution per minute.

It has an output that is linked with the fuel pump for diesel generator and in steam turbine the output is linked with the valve

Maintenance of governor

Following are the point which is dealt with carefully

1. oil of governor is free of foreign particle
2. oil should be of same number that is used previously, eg. Viscosity must be matched
3. clean oil should be used to avoid the malfunctioning of governor.

Common feature incorporate in governor are following

1. speed droop
2. speed limit
3. load limit
4. compensator

speed droop is the time between the maximum load and no load

compensator is used to compensate the variable change for micro seconds.