Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1986-11-14
1988-01-12
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
323222, 323282, 323299, 363 89, H02M 3156
Patent
active
047195525
ABSTRACT:
A circuit arrangement for producing a direct voltage from a sinusoidal input voltage comprising a filter for suppressing interference voltages, a rectifier, a switched mode power supply part and a pulse generator. The pulse generator produces from the rectified input signal switching pulses for the switched mode power supply part. The frequency of these pulses is varied so that it is a minimum at the maximum value of the rectified input voltage and is a maximum at the minimum value and is varied between the extreme values so that the second derivative of the frequency with respect to time is always zero or negative. A switching pulse is terminated when a signal proportional to the output current of the rectifier exceeds the difference between a signal proportional to the rectified input voltage and an integrated signal proportional to the output current of the rectifier.
REFERENCES:
patent: 4190882 (1980-02-01), Chevalier
patent: 4251752 (1981-02-01), Stolz
patent: 4481460 (1984-11-01), Kronig et al.
patent: 4562383 (1985-12-01), Kerscher et al.
patent: 4562527 (1985-12-01), Klamt
Marple, "Low-Distortion Three-Phase Power Regulator", IBM Tech. Discl. Bul., vol. 22, No. 3, p. 970, Aug. 1, 1979.
Albach Manfred
Wegener Fritz A.
Beha Jr. William H.
Franzblau Bernard
Mayer Robert T.
U.S. Philips Corporation
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