Procedure and apparatus for the measurement of the currents in a

Details Procedure and apparatus for the measurement of the currents in a Procedure and apparatus for the measurement of the currents in a

1989-11-06

1992-11-10

Nugyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With storage means for voltage or current

324158R, 324158MG, 318762, 363 37, G01R 3100, H02P 320

Patent

active

051631725

ABSTRACT:
A procedure and apparatus for the measurement of the currents in a frequency converter, provides that the phase currents of the frequency converter are measured by storing, in memory, signals corresponding to the current of the d.c. circuit of the converter and by producing a current value corresponding to the phase current from the previous and the momentary signals.

REFERENCES:
patent: 3732405 (1973-05-01), Stewart
patent: 4112359 (1978-09-01), Hyer
patent: 4314189 (1982-02-01), Okado et al.
patent: 4422040 (1983-12-01), Raider et al.
patent: 4527214 (1985-07-01), Hattori et al.
patent: 4685042 (1987-08-01), Severinsky
patent: 4697131 (1987-09-01), Schauder et al.
patent: 4713744 (1987-12-01), Coston
patent: 4788485 (1988-11-01), Kawagishi et al.
"Transtronic Current Sensor"; Petersen 1985 p. 1.
"LEM Module"; Liaison Electroniques Mechaniques S.A. Geneve 1985, pp. 4-17.

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