Three phase reversal detection system

Details Three phase reversal detection system Three phase reversal detection system

1992-02-13

1993-02-02

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324108, 324 7677, 361 76, 361 77, 361 85, G01R 2500, H02H 318, H02H 326

Patent

active

051840634

ABSTRACT:
A polyphase reversal detection and correction system which operates over a wide range of line frequencies and produces an automatic phase correction for maintaining proper phase sequence to a rotating device. The system includes a circuit arrangement for developing peak integrated signals by comparing the relation of various input phases, and developing an integrated reference phase signal. The input phase signals and the reference phase signals are compared to determine and correct the input phase sequence.

REFERENCES:
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patent: 3976919 (1976-08-01), Vandevier et al.
patent: 3999087 (1976-12-01), Compton
patent: 4121271 (1978-10-01), Tsai
patent: 4284939 (1981-08-01), Kawada et al.
patent: 4333119 (1982-06-01), Schoenmeyr
patent: 4636720 (1987-01-01), Farr
patent: 4802053 (1989-01-01), Wojtak et al.

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