Composition of regulators of given structure subject to meeting the engineering terms

This paper analyzes and extends the simple and efficient low-order controller design method proposed by O. N. Kiselev and B. T. Polyak in 1999 as applied to the stabilization of normal operating conditions of electric power systems. Within this approach, the complete set of feasible regulators of given structure is composed (or generated in a random way) and a desired controller is then chosen according to one or another performance index formulated in engineering terms. A robust version of the method is also analyzed and a generalization to higher-order controllers is discussed.