DC Power source

Details DC Power source DC Power source

1978-12-27

1980-07-08

Shoop, William M.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363126, H02M 118

Patent

active

042120543

ABSTRACT:
A DC power source is provided with a rectifier circuit connected to an AC power source and a smoothing circuit, which is comprised of a DC reactor and a parallel capacitor, connected to the output terminal of the rectifier. A load is connected to the parallel capacitor. A diode is connected in a closed circuit including the parallel capacitor and the load, with such a polarity as to check discharging current discharged from the parallel capacitor. The diode forms the closed circuit, together with an auxiliary power source for applying through a reactor to the diode a voltage to make the diode conductive in forward direction. In short-circuiting accident of the load, a conducting circuit established between the auxiliary power source and the diode is shut off to block an excessive current flowing through the diode into a short-circuiting path between the parallel capacitor and the load.

REFERENCES:
patent: 3090017 (1963-05-01), Novic
patent: 3612973 (1971-10-01), Kuniyoshi
patent: 3986100 (1976-10-01), Beierholm et al.

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