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Autor:
C.L. DeMarco
Publikováno v:
IEEE Control Systems. 21:40-51
We consider a special structure of dynamic system model that admits a very tractable inclusion of element failure phenomena, for which a global system Lyapunov function can be constructed. This class includes Hamiltonian systems as a special case, wi
Publikováno v:
IEEE Transactions on Power Systems. 10:1986-1993
This paper explores synchrony, a generalization of the concept of slow-coherency, and outlines how it can form the basis for efficient construction of dynamic equivalents by aggregation. The paper describes a novel approach for selecting the inter-ar
Autor:
C.L. Demarco, R.X. Qian
Publikováno v:
IEEE Transactions on Automatic Control. 37:848-852
An approach to guaranteeing the stability of a polytope of matrices is proposed. Previous results in the literature have made the obvious connection between various robust stability problems and a test for positivity of a multivariable polynomial. Su
Publikováno v:
IEEE Transactions on Industry Applications. 28:96-104
A rotor time constant estimation technique for the purpose of updating the control gains of an induction motor field-oriented controller is described. An extended Kalman filter is employed to estimate the inverse rotor time constant online only using
Autor:
C.L. DeMarco
Publikováno v:
2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309).
Summary form only given. One of the key tenets underlying FERC orders 888 and 889, and more generally underlying the move toward competitive markets, has been the presumption that open access requires widespread availability of data on the transmissi
Autor:
C.L. DeMarco
Publikováno v:
IEEE Power Engineering Society Summer Meeting.
Summary form only given, as follows. One of the premises underlying the move toward competitive markets has been the presumption that it requires "open access" to the transmission network, with widespread availability of data on the capabilities of t
Publikováno v:
2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309).
Autor:
C.L. DeMarco
Publikováno v:
1988., IEEE International Symposium on Circuits and Systems.
The author describes a method of constructing Lyapunov functions for systems that satisfy certain assumptions on their structure. He introduces the term quasigradient to identify systems which have the desired structure, and shows by several examples
Autor:
D.M. Divan, C.L. DeMarco
Publikováno v:
1988., IEEE International Symposium on Circuits and Systems.
The authors introduce a physically based objective function for determining optimal discrete pulse modulation waveforms in power electronics applications. Using this objective function, it is demonstrated that the problem of selecting an optimal wave