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1 Journal of Applied Computer Science

1 2002

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Identification and sensitivity analysis of synchronous machine d-axis parameters

100%

Niewierowicz T. , Escarela-Perez R. , Campero-Littlewood E.

tom Vol. 10, nr 1

91-103

A sensitivity analysis is performed to study the characteristics of the parameters of two-axis equivalent circuits (used in the modelling of solid rotor synchronous machines). The equivalent circuit parameters are determined by using a hybrid genetic algorithm, which also gives the right number of circuit damper branches that must be used to accurately reproduce the standstill frequency response of the synchronous machine. The sensitivity analysis clearly shows the relative importance of each parameter within the fitness Junction used in the identification process. Hence, it is observed that care must be taken in the identification process since the fitness function has very low sensitivity to some parameters. The results show that a sensitivity analysis of the circuit parameters could lead to a better understanding of the accepted two-axis equivalent circuits.