Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1992-08-10
1994-11-22
Sterrett, Jeffrey
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323284, 323288, G05F 1613
Patent
active
053672470
ABSTRACT:
In critically continuous boost converters used to achieve high power factor and low input current harmonic distortion, a power FET is driven by a pulse generator whose on time is essentially constant over a single line cycle. Off time is terminated when current in the inductor falls to zero and the voltage on the side of the inductor not connected to the input voltage is less that the input voltage. A delay causes turn on to occur at the minimum of the voltage ring to minimize turn on switching losses. At voltages when the input voltage is less than one half of the output voltage part of the on time, turn on occurs with negative current flowing through the FET power switch and the inductor. Part of the turn on time is used to charge the inductor current back to zero before energy can begin to flow back into the output of the converter. A correction circuit is provided which extends the on time as a function of the input and output voltage to avoid dead time around the zero voltage crossover of the sinusoidal input voltage which when rectified provides the input voltage to the converter.
REFERENCES:
patent: 3215925 (1965-11-01), Rieke
patent: 3432740 (1969-03-01), Morgan
patent: 3461377 (1969-08-01), Reese
patent: 3523239 (1970-08-01), Heard
patent: 3530370 (1970-09-01), Yamachi et al.
patent: 3569817 (1971-03-01), Boehringer
patent: 3571697 (1971-03-01), Phillips
patent: 3618130 (1971-11-01), Garuts
patent: 3913002 (1975-10-01), Steigerwald et al.
patent: 4135236 (1979-01-01), Mann et al.
patent: 4193111 (1980-03-01), Wester
patent: 4245285 (1981-01-01), Weiss
patent: 4317076 (1982-02-01), Price
patent: 4339705 (1982-07-01), Kelley
patent: 4356440 (1982-10-01), Curtiss et al.
patent: 4384321 (1983-05-01), Rippel
patent: 4413224 (1983-11-01), Krupka et al.
patent: 4415959 (1983-11-01), Vinciarelli
patent: 4437146 (1984-03-01), Carpenter
patent: 4459539 (1984-07-01), Cordy
patent: 4524412 (1985-06-01), Eng
patent: 4533986 (1985-08-01), Jones
patent: 4536700 (1985-08-01), Bello et al.
patent: 4553082 (1985-11-01), Nesler
patent: 4563733 (1986-01-01), Schlenk
patent: 4620271 (1986-10-01), Musil
patent: 4677366 (1987-06-01), Wilkinson et al.
patent: 4683529 (1987-07-01), Bucher
patent: 4712169 (1987-12-01), Albach
patent: 4719552 (1988-01-01), Albach et al.
patent: 4727308 (1988-02-01), Huljak et al.
patent: 4792887 (1988-12-01), Bernitz et al.
patent: 4806842 (1989-02-01), Bittner
patent: 4862057 (1989-08-01), Contartese et al.
patent: 4940929 (1990-07-01), Williams
patent: 5028861 (1991-07-01), Pace et al.
patent: 5170333 (1992-12-01), Niwayama
IBM TDB vol. 22 No. 3 Aug. '78 pp. 970-971. "Low-Distortion Three-Phase Power Regulator".
IBM TDB vol. 25 No. 11B Apr. 83 pp. 6098-6100 Control Circuit for Switching Regulator.
A Line Interfaced Inverter with Active Control of the Output Current Waveform M. F. Schlecht, Student Member, IEEE pp. 234-241. Jul. 1980.
An AC to DC Converter with High Quality Input Waveforms pp. 63-75. M. J. Kocher and R. L. Steigerwald. Jun. 1982.
Novel Topological Alternatives to the Design of a Harmonic-Free, Utility/DC Interface pp. 206-216 M. R. Schlecht Jun. 1983.
Dynamic Power Factor Correction in Capacitor Input Off Line Converters pp. B3-1-B3-6. Jun. 1983.
A Simple but Accurate Analysis of Capacitor Input Rectifier Circuits pp. 36-38. J. H. Hendriks. Jul. 1985.
Sinusoidal Line Current Rectification with a 110 kHZ B-SIT Set Up Converter pp. 92-98. N. Mohan Jun. 1984.
Design of a 1 kW Power Factor Correction Circuit pp. 17-24. Power Electronics M. K. Nalbant and Jon Klein. Jul. 1990.
Active Harmonic Filtering for Line Rectifiers of Higher Output Power Michael Herfurth pp. 9-13. Dec. 1986.
Application Note TDA 4814--Integrated Circuit for Sinusoidal Line Current Consumption siemens Mar. 1986.
Blocher William S.
Cassidy Bruce M.
Groves, Jr. James O.
Malik Randhir S.
Newton Stephen F.
International Business Machines - Corporation
Steinberg William H.
Sterrett Jeffrey
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