Abstract
This paper describes an adaptive bilinear control method for the design of a single-machine infinite-bus (SMIB) power system stabiliser (PSS). It is first shown that a bilinear model, which describes the nonlinear relationship between the electric power output of the generator and the excitation control input, inherently tracks the changes in the system operating point. This bilinear model uses a minimum set of measurable feedback signals, and is linear in its parameters. By incorporating the nonlinearities of the power system into the design of the control law, an adaptive bilinear PSS based on the bilinear model provides better damping performance than that of a corresponding adaptive linear device discussed in the literature.
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