Apparatus and method for testing the performance of electrical m

Details Apparatus and method for testing the performance of electrical m Apparatus and method for testing the performance of electrical m

1979-10-19

1982-09-14

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

322 99, G01R 3500

Patent

active

043488927

ABSTRACT:
This invention relates to an apparatus for determining the power angle in electrical AC machines. The invention includes means for determining the synchronous rotating magnetic field of the AC machine and means for determining the angular velocity of the machine's rotor. The value of the angular velocity of the machine's rotor is subtracted from the value of the synchronous rotating magnetic field. The difference between the synchronous rotating magnetic field of the machine and the value of the angular velocity of the machine's rotor is multipled by a predetermined constant to produce an accurate measure of the power angle of the machine being tested.

REFERENCES:
patent: 1935292 (1933-11-01), Griscom et al.
patent: 3525026 (1970-08-01), Ahamed
patent: 4091662 (1978-05-01), Emanuel
Jansch, H. G. et al., "A fast response . . . synchronous machines", from Journal of Physics E (G.B.), vol. 4, No. 1, Jan. '71, pp. 43-45.

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