
TY  - JOUR
A1  - Shen, DWC 
T1  - Operational Impedance Matrices of <I>n</I>-Phase Partially Symmetrical Machines
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1951
VL  - 4
IS  - 4
SP  - 544
EP  - 559
KW  - 
UR  - https://doi.org/10.1071/CH9510544 
N2  - By an affine transformation of space with origin fixed, the hyper-space associated with an n-phase partially-symmetrical machine having multi-winding in the field system is partitioned into two orthogonal sub-spaces of n-2 and 2 dimensions respectively. The armature reaction and the saliency effect of the machine are found to depend only upon the interaction of two rotating axes on the 2-dimensional plane. The complex stationary axes in the n-2 dimensional sub-space do not react on the field system and hence are named the zero armature-reaction axes. This supports a conclusion that, barring single-phase machines, the transient and steady-state performance characteristics of machines of any number of phases under balanced load conditions are essentially the same.   For transient solutions, the cases of suddenly-applied voltages and sudden short- circuits are considered. The correlation between the machine parameters as obtained in the present analysis with those obtained by the two-reaction method is established. 
ER  -

