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dc.contributor.supervisor Annakkage, Udaya (Electrical and Computer Engineering) Gole, Aniruddha (Electrical and Computer Engineering) en_US
dc.contributor.author Kshatriya, Niraj
dc.date.accessioned 2011-09-02T18:00:15Z
dc.date.available 2011-09-02T18:00:15Z
dc.date.issued 2010-03
dc.identifier.citation Kshatriya, N.; Annakkage, U.D.; Hughes, F.M.; Gole, A.M.; , "Optimized Partial Eigenstructure Assignment-Based Design of a Combined PSS and Active Damping Controller for a DFIG," Power Systems, IEEE Transactions on , vol.25, no.2, pp.866-876, May 2010 en_US
dc.identifier.uri http://hdl.handle.net/1993/4838
dc.description.abstract In this thesis the eigenstructure (eigenvalues and eigenvectors) assignment technique based algorithm has been developed for the design of controllers for power system applications. The application of the algorithm is demonstrated by designing power system stabilizers (PSSs) that are extensively used to address the small-signal rotor angle stability problems in power systems. In the eigenstructure assignment technique, the critical eigenvalues can be relocated as well as their associated eigenvectors can be modified. This method is superior and yield better dynamical performance compared to the widely used frequency domain design method, in which only the critical eigenvalues are relocated and no attempt is made to modify the eigenvectors. The reviewed published research has demonstrated successful application of the eigenstructure assignment technique in the design of controllers for small control systems. However, the application of this technique in the design of controllers for power systems has not been investigated rigorously. In contrast to a small system, a power system has a very large number state variables compared to the combined number of system inputs and outputs. Therefore, the eigenstructure assignment technique that has been successfully applied in the design of controllers for small systems could not be applied as is in the design of power system controllers. This thesis proposes a novel approach to the application of the eigenstructure assignment technique in the design of power system controllers. In this new approach, a multi-objective nonlinear optimization problem (MONLOP) is formulated by quantifying different design objectives as a function of free parametric vectors. Then the MONLOP is solved for the free parametric vectors using a nonlinear optimization technique. Finally, the solution of the controller parameters is obtained using the solved free parametric vectors. The superiority of the proposed method over the conventional frequency domain method is demonstrated by designing controllers for three different systems and validating the controllers through nonlinear transient simulations. One of the cases includes design of a PSS for the Manitoba Hydro system having about 29,000 states variables, which demonstrates the applicability of the proposed algorithm for a practical real-world system. en_US
dc.publisher IEEE Transactions on Power System en_US
dc.subject eigenstructure en_US
dc.subject eigenanalysis en_US
dc.subject small signal stability en_US
dc.subject controller design en_US
dc.title Power System Controller Design by Optimal Eigenstructure Assignment en_US
dc.degree.discipline Electrical and Computer Engineering en_US
dc.contributor.examiningcommittee Fernando, Ioni (Electrical and Computer Engineering) Popplewell, Neil (Mechanical and Manufacturing Engineering) Martins, Nelson (CEPEL Research, Rio de Janeiro Brazil) en_US
dc.degree.level Doctor of Philosophy (Ph.D.) en_US
dc.description.note October 2011 en_US


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