Half-bridge zero-voltage switched multi-resonant converters

Details Half-bridge zero-voltage switched multi-resonant converters Half-bridge zero-voltage switched multi-resonant converters

1988-09-27

1989-08-22

Salce, Patrick R.

Electric power conversion systems

Current conversion

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

363 98, 363132, H02M 3335

Patent

active

048601845

ABSTRACT:
A half-bridge zero-voltage-switched multi-resonant converter. The converter basically comprises a device for converting an input voltage signal to a DC output signal to be imposed across a load. The device includes input terminals for receiving the input signal and output terminals for imposing the DC output signal across the load. Serially connected first and second switching assemblies are connected in parallel across the input terminals. Each of the first and second switching assemblies includes a transistor switch, a diode and a capacitor all arranged in parallel. The device further includes a transformer having a primary winding and serially connected first and second secondary windings. A first rectifier in parallel with a first resonant capacitor is used to connect the first secondary winding across the output terminals. Circuitry is provided for connecting the primary winding of the transformer to the input terminals and to the serial connection between the first and second switching assemblies. In order to complete the zero-voltage-switched multi-resonant converter for off-line use, a resonant circuit is formed with the first and second resonant capacitors and the total inductance of the primary winding of the transformer.

REFERENCES:
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patent: 4648017 (1987-03-01), Nerone
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patent: 4695934 (1987-09-01), Steigerwald et al.
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patent: 4794506 (1988-12-01), Hino et al.
"Secondary Side Resonance For High Frequency Power Conversion", Liu et al, IEEE Applied Power Electronics Conference, 1986, pp. 83-89.
"Zero-Voltage Switching Technique In DC/DC Converters", Liu et al, IEEE Applied Power Electronics Conference, 1986, pp. 58-70.
"Zero-Voltage Switching Technique In High Frequency Off Line Converters", Jovanovic et al, IEEE Applied Power Electronics Conference, 1988, pp. 23-32.

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