“…The problem of synthesizing control laws for the coordinates of a synchronous generator under conditions of parametric and coordinate disturbances can be solved by several methods of the theory of automatic control [8,9], [10,11], [12,13], [14,15], [16,17], [18,19], [20,21]: a) Relay control methods with variable structure ensure the operation of controllers in relay mode. This feature causes the appearance of specific sliding modes of operation.…”