NONLINEAR SPEED REGULATION CONTROL SYSTEM FOR ELECTRIC GOVERNOR

摘要

PURPOSE:To stabilize the speed feedback system in a generator and to provide an arbitrary single step graph-denoted nonlinear speed regulation by a method wherein the generator feedback system is provided with a single step graph-denoted nonlinear transfer function circuit that does not effect output changes in a preset frequency range and effects output changes outside the frequency range. CONSTITUTION:The rigidity recovery setter unit 7 feeds back to the speed control operator unit 8 the governor aperture signal theta whose quantity is determined by speed regulation. The nonlinear speed regulation setter unit 16 located in the generator speed feedback system outputs signals responding to adjustable gain when the generator frequency N stays within a range centering on the system reference frequency and outputs signals of a certain quantity when the frequency N goes beyond the preset frequency range. The speed feedback signal D outputted by the comparator unit 15 is compared in the comparator unit 3 with the signals respectively outputted by the speed setter unit 1 and the output setter unit 2.