Resonant power converter with current sharing among multiple tra

Details Resonant power converter with current sharing among multiple tra Resonant power converter with current sharing among multiple tra

1988-01-04

1989-04-25

Salce, Patrick R.

Electric power conversion systems

Current conversion

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

363 67, 363132, H02M 3335

Patent

active

048253480

ABSTRACT:
A resonant power converter has a plurality of transformers, each having a primary winding and a secondary winding coupled thereto; the primary windings of all of the plurality of transformers are connected in series. The plurality of transformer secondary circuits are effectively connected in parallel, for current addition. a relatively small portion of the resonance capacitor is placed across each primary winding to insure a low impedance which causes the secondary-winding-connected rectifiers to commutatively switch substantially independently and share the entire output current substantially equally. A plurality of lower power transformers are thus utilized to replace a single high power transformer, so that leakage inductance is reduced and a higher operating frequency can be maintained.

REFERENCES:
patent: 4128866 (1978-12-01), Doerre
patent: 4204147 (1980-05-01), Larrabee
patent: 4347560 (1982-08-01), Seiersan
patent: 4591964 (1986-05-01), Kemstedt
patent: 4618919 (1986-10-01), Martin
patent: 4661897 (1987-04-01), Pitel
patent: 4685039 (1987-08-01), Inou et al.
patent: 4695933 (1987-09-01), Nguyen et al.
patent: 4717889 (1988-01-01), Engelmann
patent: 4761727 (1988-08-01), Kammiller

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