Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1989-02-21
1991-05-07
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 56, 363134, H02M 3337
Patent
active
050141767
ABSTRACT:
A switching circuit which provides excess voltage and a circuit, responsive to the excess voltage, to direct energy related to the excess voltage back to a voltage source coupled to the switching circuit is described. The circuit responsive to the excess voltage includes a capacitor, an inductor, and a transistor to couple and decouple the capacitor and the inductor. The transistor couples the capacitor to the inductor to transfer energy related to excess voltage stored in the capacitor to the inductor for storage, and decouples the capacitor from the inductor to transfer energy stored in the inductor to the voltage source. The circuit also includes a comparator, responsive to the level of the excess voltage, to provide a control signal to the transistor to control the coupling and decoupling of the capacitor and the inductor.
REFERENCES:
patent: 4336587 (1982-06-01), Boettcher et al.
patent: 4438486 (1984-03-01), Ferraro
patent: 4564896 (1986-01-01), Akerson
patent: 4665475 (1987-05-01), Brandstatter
DC-DC Converter Circuit described and shown in Information Disclosure Statement dated Feb. 16, 1989.
"Pulse and Digital Circuits" Millman and Taub, McGraw-Hill Book Company, Inc., 1956, pp. 248 (Section 8-6) through 252 (note particularly FIG. 8-19).
"Silicon General Product Catalog" (1986), note particularly 94-101 and pp. 160-166.
V. Joseph Thottuvelil et al., "Small-Signal Modeling of a Push-Pull Current-Fed Converter", IEEE Power Electronics Specialists Conf., also known as "PESC '82 Record" (Jun. 14-17, 1982), pp. 224-239.
Kelleher, Jr. John J.
Shute Donald W.
Beha Jr. William H.
Maloney Denis G.
Raytheon Company
Sharkansky Richard M.
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