Single stage power factor corrected converter having isolated ou

Details Single stage power factor corrected converter having isolated ou Single stage power factor corrected converter having isolated ou

1991-06-17

1992-09-08

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 37, 363 40, 363 97, 323207, H02M 3335

Patent

active

051463962

ABSTRACT:
A power converter is operative to reduce harmonics at an AC input by controlling its power switching so that a current waveform in a switched inductor is substantially identical to a rectified version of the input AC voltage waveform. The voltage spikes induced by the switching of the inductor into circuitry that includes the leakage inductance of a power transformer are subdued by circuitry that absorbs the initial voltage spike temporarily and then delivers that energy to the output load of the converter.

REFERENCES:
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patent: 4594649 (1986-06-01), Rhoads et al.
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patent: 4736284 (1988-04-01), Yamagishi et al.
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patent: 4975819 (1990-12-01), Lannuzel
patent: 5047911 (1991-09-01), Sperzel et al.
"High Power Factor Preregulators for Off-Line Power Supplies" by Lloyd Dixon, p. 7-1, Jun. 10, 1991.
"High Power Factor Switching Preregulator Design Optimization" by Lloyd Dixon, pp. 12-1, 12-8, 12-9, 12-10 (incomplete), Jun. 10, 1991.

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