Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1987-09-03
1989-03-28
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324158MG, 318490, 318696, G01R 3100, G01R 3102
Patent
active
048167568
ABSTRACT:
Rectifiers mounted on the rotor of a brushless alternator are tested by applying an AC voltage to an exciter field winding of the brushless alternator. This applied voltage induces current in a rotor mounted exciter armature winding which is inductively coupled to the exciter field winding and produces current flow through the rectifiers. The magnitude of an even harmonic component of the exciter field winding current is measured and compared to a predetermined magnitude to obtain an indication of the operational status of at least one of the rectifiers. This comparison may be done manually or may be performed electronically in accordance with known techniques.
REFERENCES:
patent: 3210603 (1965-10-01), Calfee et al.
patent: 3226561 (1965-12-01), Taniai
patent: 3534226 (1970-10-01), Hyvarinen et al.
patent: 3534228 (1970-10-01), Hyvarinen et al.
patent: 3535589 (1970-10-01), Bourgeault
patent: 4164705 (1979-08-01), Whitney et al.
patent: 4348629 (1982-09-01), Sievers
patent: 4471308 (1984-09-01), Gable et al.
Eisenzopf Reinhard J.
Lenart R. P.
Nguyen Vinh P.
Westinghouse Electric Corp.
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