D.C. voltage converter including a pulse width controlled semico

Details D.C. voltage converter including a pulse width controlled semico D.C. voltage converter including a pulse width controlled semico

1983-09-29

1985-12-17

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 56, 363 97, H02M 3335

Patent

active

045595917

ABSTRACT:
A d.c. voltage converter having alternating energy intake and energy discharge phases. The converter includes a power transformer having a core and at least primary, secondary and tertiary windings associated with the core. A primary circuit including a pulse width controlled semiconductor switch connected in series with the primary winding conducts an energy intake current during the energy intake phase of the converter. A secondary circuit including a smoothing capacitor and at least one rectifier element connecting the smoothing capacitor to the secondary winding conducts an energy discharge current during the energy discharge phase on the converter. Circuit means are provided for connecting the tertiary winding to the smoothing capacitor so that, following the energy discharge phase of the converter, excess energy of the smoothing capacitor in the form of an energy feedback current is fed back into the core until the start of the next energy intake phase of the converter.

REFERENCES:
patent: 4268898 (1981-05-01), Brown
patent: 4306282 (1981-12-01), Heinicke
patent: 4455596 (1984-06-01), Baker
Joachim Wustenhube, "Schaltnetzteile" [Switching Network Components] published by Expert Verlag 1979, p. 410.

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