Suppression of magnetic vibration and noise of two-pole turbine generators

The constant striving for improvement in over-all economy in the generation of electric power by steam has resulted in the last three or four years in a rather rapid increase in the capacity of steam turbine generators built to operate at 3,600 rpm. One of the factors contributing to this growth was the progress made in the use of high-pressure and high-temperature steam which led to the application of a number of such turbines for superposition on existing comparatively low-pressure steam plants, as well as for straight through condensing operation. The operating experience with such recently developed 3,600-rpm generators ranging in capacity up to 66,667 kva has been unusually good. The troubles which have been experienced, either mechanical or electrical, have not been of a serious nature.