Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1993-03-24
1995-05-23
Sterrett, Jeffrey L.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323282, 323285, 363 21, 363 97, G05F 1613, H02M 3335
Patent
active
054187095
ABSTRACT:
A pulse-width modulated DC-to-DC power converter including a first inductor, i.e. a transformer or an equivalent fixed inductor equal to the inductance of the secondary winding of the transformer, coupled across a source of DC input voltage via a transistor switch which is rendered alternately conductive (ON) and non-conductive (OFF) in accordance with a signal from a feedback control circuit. A first capacitor capacitively couples one side of the first inductor to a second inductor which is connected to a second capacitor which is coupled to the other side of the first inductor. A circuit load shunts the second capacitor. A semi-conductor diode is additionally coupled from a common circuit connection between the first capacitor and the second inductor to the other side of the first inductor. A current sense transformer generating a current feedback signal for the switch control circuit is directly coupled in series with the other side of the first inductor so that the first capacitor, the second inductor and the current sense transformer are connected in series through the first inductor. The inductance values of the first and second inductors, moreover, are made identical. Such a converter topology results in a simultaneous volt-second balance in the first inductance and ampere-second balance in the current sense transformer.
REFERENCES:
patent: 3573598 (1971-04-01), Clarke et al.
patent: 4184197 (1980-07-01), Cuk et al.
patent: 4257087 (1981-03-01), Cuk
patent: 4301497 (1981-11-01), Johari
patent: 4355352 (1982-10-01), Bloom et al.
patent: 4415959 (1983-11-01), Vinciurelli
patent: 4559590 (1985-12-01), Davidson
patent: 4654769 (1987-03-01), Middlebrook
patent: 4709316 (1987-11-01), Ngo et al.
patent: 4734839 (1988-05-01), Barthold
patent: 4809149 (1989-02-01), Burghard
patent: 4975819 (1990-12-01), Lannuzel
patent: 5164892 (1992-11-01), Kimbara
patent: 5287261 (1994-02-01), Ehsani
Rudolf P. Severns and Gordon E. Bloom; "Modern DC-to-DC Switchmode Power Conver Circuits"; Published in 1985; pp. 166, 168, and 169, FIG. 7.13.
Alan T. Lukemire; "Forback DC-to-DC Converters"; NASA Tech Brief Published Apr. 1992; pp. 32 and 33, FIGS. 1 and 2.
NASA Technical Support Package; "Forback DC-to-DC Converters" publicly available after publication of reference NASA Tech Brief (see first paragraph on title page); pp. 1 thru 5; Apr. 1992.
Marchant Robert D.
Miller Guy M.
Sterrett Jeffrey L.
The United States of America as represented by the Administrator
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