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

1994-03-02

1995-03-28

Nguyen, Vinh

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

G01R 3124

Patent

active

054020808

ABSTRACT:
Unsaturated inductances of an equivalent circuit of a synchronous machine are measured from the following steps: An armature resistance of a synchronous machine is measured. A time constant of an armature with damper under a quadrature-axis magnetomotive force is measured when an armature and a field are in a positional relationship wherein a magnetomotive force by flowing current to an armature coil of the synchronous machine becomes the quadrature-axis magnetomotive force. Also, a current and a voltage of the armature are measured when the armature and the field are in the positional relationship by a quadrature-axis Dalton-Cameron method. The measured values are then used for solving equations defining inductances of a quadrature-axis equivalent circuit of the synchronous machine.

REFERENCES:
patent: 4714878 (1987-12-01), Steinigeweg
patent: 4763058 (1988-08-01), Heining et al.
patent: 4945508 (1990-07-01), Benejean
patent: 5202620 (1993-04-01), Kawamura
"The Extended Slip Method for Measuring Synchronous Machine Constants", The Transactions of the Institute of Electrical Engineers of Japan, vol. 97-B, No. 5, May, 1977, pp. 287-293.
JEC-114 Synchronous Machine, published by the Institute of Electrical Engineers of Japan, 1979, pp. 72-89.
C"Part 4: Methods for Determining Synchronous Machine Quantities from Tests", IEC Standard Publication 34-4, Geneva, Switzerland, 1985.

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