Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1983-03-02
1985-02-12
Shoop, William M.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
315232, 315253, 307 11, H02N 706
Patent
active
044995334
ABSTRACT:
A power supply apparatus is structured such that the output of an alternating current voltage source (1) is connected to the input of a rectifying circuit (2), a series connection of a first smoothing capacitor (3a), a diode (15) and a second smoothing capacitor (3b) is connected to the output of the rectifying circuit so that the rectifying direction of the diodes may be opposite to the rectifying direction of the rectifying circuit, a first load (4a) is connected in parallel with the series connection portion of the first smoothing capacitor and the diode, and a second load (4b) is connected in parallel with the series connection portion of the second smoothing capacitor and the diode. Accordingly, during a period in which a ripple voltage of the output from the rectifying circuit is high, the first and second smoothing capacitors are charged and a current flows into the first and second loads, and during a period in which a ripple voltage of the output from the rectifying circuit is low a current flows from the first smoothing capacitor through the diode to the first load and a current flows from the second smoothing capacitor through the diode to the second load, whereby a stabilized voltage of little ripple component can be supplied to the first and second loads.
REFERENCES:
patent: 3733541 (1973-05-01), Elms
patent: 3987356 (1976-10-01), Steigerwald
patent: 4193111 (1980-03-01), Wester
patent: 4412277 (1983-10-01), Mitchell
Jones Judson H.
Matsushita Electric & Works Ltd.
Shoop William M.
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