High efficiency voltage converter

Details High efficiency voltage converter High efficiency voltage converter

1991-07-19

1993-08-10

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363 98, 363132, H02M 3335

Patent

active

052355012

ABSTRACT:
A full bridge DC to DC converter which provides zero voltage switching (ZVS) for one leg of the bridge and zero current switching (ZCS) for the other leg of the bridge is described. ZVS is achieved with parallel capacitors, while ZCS is achieved by using the reverse breakdown characteristics of the various diode and switching devices. This technique provides a significant reduction in the switching losses of the switching devices, which allows for higher power and frequency combinations.

REFERENCES:
patent: 4864483 (1989-09-01), Divan
patent: 4953068 (1990-08-01), Henze
patent: 4965710 (1990-10-01), Pelly et al.
patent: 5077651 (1991-12-01), Kobayashi et al.
patent: 5132888 (1992-07-01), Lo et al.
patent: 5140510 (1992-08-01), Myers
"A DC to DC PWM Series Resonant Converter Operated at Resonant Frequency", Vandelac et al., Aug. 1988, IEEE Transactions on Industrial Electronics, vol. 35, No. 3, p. 456.
"Constant Frequency Clamped-Mode Resonant Converters", Lee et al., Oct. 1988, IEEE Transactions on Industrial Electronics, vol. 3, No. 4, p. 460.

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