It is shown that the two components of the transient armature currents of a salient-pole synchronous machine usually described as undirectional and of double frequency are both alternating and that the sum of their frequencies is twice the angular velocity. The usual assumption is, however, well justified at rated speed.
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References
1.
ConcordiaC., Synchronous Machines, J. Wiley p. 58 (1951).
2.
AdkinsB., The General Theory of Electrical Machines, Chapman and Hall, pp. 151, 152 (1957).
3.
HancockN. N., Matrix Analysis of Electrical Machinery (2nd Ed.), Pergamon Press, p. 234 (1974).
