It is well known that Re It*GI represents the mean torque of an a.c. machine in terms of complex matrices. The significance of Im It*GI is considered and it is shown that no corresponding generalisation can be made.
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References
1.
HancockN. N.Matrix Analysis of Electrical Machinery, 2nd Ed., pp. 157–161, Pergamon (1974).
2.
Ibid. Exercise 32, pp. 330 and 338 (in which the negative sign has been omitted).
