Regulated AC-DC converter having saturation inductance in resona

Details Regulated AC-DC converter having saturation inductance in resona Regulated AC-DC converter having saturation inductance in resona

1982-11-03

1985-06-25

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 37, 363 98, H02P 1322

Patent

active

045257744

ABSTRACT:
A switching power source device, in which a DC voltage obtained by rectifying an AC voltage is converted by switching elements into an AC voltage, which is subjected to voltage conversion by a transformer and rectified by a rectifier circuit to output a DC voltage therefrom. In one embodiment, a resonance capacitor and a saturable transformer form a series resonant circuit, and switching elements are subjected to frequency modulation control. In another embodiment, an inductor connected in parallel with a non-saturable transformer, and a capacitor connected in series to the same transformer, form a series resonant circuit, and the switching elements are subjected to frequency modulation control. In each embodiment, the series resonant circuit is subjected to frequency modulation control, and the electric currents from the switching elements do not rise and fall suddenly. Accordingly, switching losses and noise can be minimized, and the output voltages can be controlled easily.

REFERENCES:
patent: 3596165 (1971-07-01), Andrews
"Frequency-Controlled Voltage Regulator", NASA Tech. Briefs, vol. 5, No. 2, p. 156, (Summer 1980).
"The Supply Specifier Has a Basic Choice", Electronics, pp. 108-114, Jun. 16, 1981.

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