DISPOSITIF DE COMMANDE DE MACHINE SYNCHRONE A CHAMPS ENROULES

摘要

A synchronous machine control device includes a flux command generator, a magnetic flux estimator, a divider, a flux controller and gamma- and delta-axis armature current controllers. The flux command generator produces a flux command from the synchronous machine turning speed. The magnetic flux estimator calculates the magnitude and phase of armature flux linkage from armature currents and field current taking into consideration magnetic fluxes produced by permanent magnets. The divider produces an armature current command by dividing a torque command by the armature flux linkage. The flux controller determines a field current command based on an error of the magnitude of the armature flux linkage from the flux command. The gamma- and delta-axis armature current controllers control the synchronous machine such that both an error of an armature current in a direction perpendicular to the armature flux linkage direction from the armature current command and an armature current in the armature flux linkage direction become zeros.