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- Joost Rommes, Nelson Martins
- IEEE Transactions on Power Systems
- 2006

This paper describes a new algorithm to compute the dominant poles of a high-order scalar transfer function. The algorithm, called the subspace accelerated dominant pole algorithm (SADPA), is moreâ€¦ (More)

- F. Gomes de Freitas, Joost Rommes, Nelson Martins
- IEEE Transactions on Power Systems
- 2008

This paper presents an efficient linear system reduction method that computes approximations to the controllability and observability gramians of large sparse power system descriptor models. Theâ€¦ (More)

- Joost Rommes, Nelson Martins, Francisco Damasceno Freitas
- IEEE Transactions on Power Systems
- 2010

Knowledge of the rightmost eigenvalues of system matrices is essential in power system small-signal stability analysis. Accurate and efficient computation of the rightmost eigenvalues, however, is aâ€¦ (More)

- Nelson Martins, L.T.G. Lima
- Conference Papers Power Industry Computerâ€¦
- 1989

The authors present efficient algorithms for the solution of two important problems in the area of damping control of electromechanical oscillations in large-scale systems. The proposed algorithmsâ€¦ (More)

- Joost Rommes, Nelson Martins
- IEEE Transactions on Power Systems
- 2008

This paper describes a new algorithm, named the sensitive pole algorithm, for the automatic computation of the eigenvalues (poles) most sensitive to parameter changes in large-scale system matrices.â€¦ (More)

- Nelson Martins
- IEEE Power Engineering Review
- 1986

Frequency response and eigenvalue techniques are fundamental tools in the analysis of small signal stability of multimachine power systems. This paper describes two highly efficient algorithms whichâ€¦ (More)

- Joost Rommes, Nelson Martins
- SIAM J. Scientific Computing
- 2008

A new algorithm for the computation of dominant poles of transfer functions of largescale second-order dynamical systems is presented: the quadratic dominant pole algorithm (QDPA). The algorithmâ€¦ (More)

- Sergio L. Varricchio, Nelson Martins, L. T. G. Lima
- IEEE Power Engineering Review
- 2002

This paper describes a Newton-Raphson method that accurately shifts a set of electrical network poles and transfer function zeros to more suitable locations in the complex plane to improve theâ€¦ (More)

- F. Gomes de Freitas, Nelson Martins, S. L. Varricchio, Joost Rommes, F. C. Veliz
- IEEE Transactions on Power Systems
- 2011

This paper compares the computational performances of four model order reduction methods applied to large-scale electric power RLC networks transfer functions with many resonant peaks. Two of theseâ€¦ (More)

- Fernando Javier De Marco, Nelson Martins, Julio Cesar Rezende Ferraz
- IEEE Transactions on Power Systems
- 2013

This paper describes a computational technique for the phase shaping of the power system stabilizer in a power plant that will improve its contribution to the satisfactory damping of the generatorâ€¦ (More)