Recent developments in generator voltage regulation

This paper discusses the fundamental requirements for stability in a generator voltage regulating system having several time delays. A new rheostatic type of voltage regulator element is described, together with a method of introducing antihunting means into the regulating system. In the appendices, a mathematical treatment gives the requirements for stability and adequate damping for several typical voltage regulating systems. It is shown that with certain systems, theoretically perfect regulation and also high damping are possible.