Wound field synchronous machine control device

Details Wound field synchronous machine control device Wound field synchronous machine control device

2006-01-10

2006-01-10

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S700000, C318S704000, C318S712000

Reexamination Certificate

active

06984959

ABSTRACT:
A synchronous machine control device includes a flux command generator, a magnetic flux estimator, a divider, a flux controller and γ- and δ-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 γ- and δ-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.

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“High-performance Variable Speed Control of Synchronous Motor”, Hiroshi Osawa, et al., The Transactions of the Institute of Electrical Engineers of Japan on Industry Applications, vol. 107-D, No. 2, Feb. 1987, pp. 175-182.

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