ABSTRACT
The human knowledge, in the form of IF-THEN rules, available to a control designer can be classified as plant knowledge and/or control experience. The former describes the plant behavior and the latter represents the required control actions in different operating conditions of the plant. In indirect adaptive fuzzy controller (IAFC), plant knowledge is used to construct a suitable fuzzy system. This fuzzy system is then used to model the unknown plant toward designing an adaptive fuzzy logic controller. Based on the indirect adaptive fuzzy logic controller (IAFLC) strategy this chapter develops a load frequency control (LFC) scheme for a multi-area power system. The chapter introduces an additional control signal to the control law (10.14) in order to reduce the tracking error in an H∞ sense. An indirect adaptive fuzzy logic LFC scheme will be designed for each area of an interconnected power system. The overall system is assumed to have unknown parameters and subject to constant load disturbances.
