Method of measuring unsaturated inductances of an equivalent cir

Details Method of measuring unsaturated inductances of an equivalent cir Method of measuring unsaturated inductances of an equivalent cir

1992-08-12

1994-05-03

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

G01R 3134

Patent

active

053090896

ABSTRACT:
A method of measuring unsaturated inductances of an equivalent circuit of a synchronous machine including measuring a no-load saturation characteristic of a synchronous machine; measuring a three-phase short-circuit characteristic of the synchronous machine; measuring currents and voltages of an armature and a field when an armature coil and a field coil are in a positional relationship wherein a magnetomotive force by flowing current to the armature coil of the synchronous machine becomes a direct-axis magnetomotive force and both when the field coil is in an open-circuit state and when the field coil is in a short-circuit state by direct-axis Dalton-Cameron method; and solving simultaneous equations concerning a direct-axis equivalent circuit of the synchronous machine by using results of the measuring the no-load saturation characteristic, the measuring the three-phase short-circuit characteristic and the measuring by the direct-axis Dalton-Cameron method, thereby obtaining impedances of respective elements constituting the direct-axis equivalent circuit.

REFERENCES:
patent: 4714878 (1987-12-01), Steinigeweg
patent: 4763058 (1988-08-01), Heining et al.
patent: 5202620 (1993-04-01), Kawamura

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