METHOD AND ARRANGEMENT FOR ADJUSTING OUTPUT OF MOTOR-GENERATOR

PROBLEM TO BE SOLVED: To provide a method and system for adjusting the output voltage of a motor-generator 106 of the reactor plant recirculation system of a boiling water reactor. SOLUTION: This method includes a step for detecting the output voltage of an AC generator, to transmit its output voltage signal relating to a voltage regulator circuit 100, a step for detecting a speed 116 of the AC generator to transmit its speed signal related to the voltage regulator circuit 100, a step for using a volt/hertz splitter network 200 which is electrically connected relating to an output voltage detection circuit 124 of the AC generator and to its speed detection device 116 so as to compare the output voltage signal of the AC generator with its speed signal, a step for using a lead compensation circuit 192 electrically connected, in series with the volt/hertz splitter network 200 so as to adjust the capacitive reactance of a voltage regulator, and a step for adjusting the current in a control winding 226 of a saturable reactor 228. COPYRIGHT: (C)2004,JPO