Application Flatness Technique Based Feedback Linearization Techniques in electrical power system

چکیده مقاله

In one section of paper attention on the concept of flatness and its practical application to the design of an optimal transient controller for a synchronous machine. The differentia flatness scheme of  interest requires the generation of a flat output from which the feedback control law can easily be designed.Thus the computation of the flat output for  reduced  order model  of  the synchronous machine with simplified turbine dynamics is hereby presented. The transient behavior of a single machine equipped with  the so designed  nonlinear controllers  feeding an infinite bus  is illustrated  via simulation in  Matlab  environment. The results obtained for  transient disturbances on  the single machine infinite bus system  (SMIBS) are presented  and compared with other  control algorithms to demonstrate the effectiveness of the proposed scheme.in two section, This  paper proposes a new  method, called  the flatness-based adaptive control, for STATCOM voltage regulation. By this method, the nonlinear   STATCOM variables can be easily and exactly controlled by controlling flat output without solving differential equations. Further, the control gains  can dynamically self-adjust  during the voltage regulation after a disturbance. Thus, the performance from the flatness-based adaptive control will consistently match a desired  response, regardless of  the  change of operating conditions.

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