Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1981-04-02
1982-08-31
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 98, H02M 3335, H02P 1322
Patent
active
043475582
ABSTRACT:
An AC to DC converter that utilizes a split capacitor, half bridge, DC to DC converter compensates for unequal voltages across each member of a split capacitor bank. A voltage balance control circuit senses any differences in voltages across the member capacitors and generates an error correcting signal for modifying steering signals to an inverter that is used to convert a DC signal from the half bridge DC to DC converter to a high frequency pulse width modulated AC signal by alternately placing each member of the split capacitor bank and consequently their stored energy across the output terminals of the inverter. The error signal causes the steering signals to connect the member capacitor with the larger sensed voltage across the output terminals for a relatively larger period of time than the capacitor with the lesser sensed voltage.
REFERENCES:
patent: 3840798 (1974-10-01), Burchall et al.
patent: 3859586 (1975-01-01), Wadlington
patent: 4011494 (1977-03-01), Saka
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4291366 (1981-09-01), Nelson
Elektron, Entwickl., (Germany), vol. 15, No. 10, pp. 46-52, Oct. 1980.
Electronics Industry, vol. 5, No. 4, pp. 25-29, Apr. 1979.
Beha Jr. William H.
Greenberg Howard R.
Hamman H. Fredrick
Robinson Richard K.
Rockwell International Corporation
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