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US 5,706,184 AGranted
Resonant converter with a resonant circuit employing the leakage inductance and distributed capacitance of a transformer
AssigneeNEC Corporation
InventorsTsuneo Mizuta, Kaoru Ishimoto
Life of this patent
Estimating the term…
Abstract
Secondary side leakage inductance and distributed capacity of a high voltage insulating transformer are constructively employed to function as the resonance coil and resonance condenser of a resonance converter. Increased efficiency is achieved by using a smoothing circuit of choke input construction so as not to reduce the impedance on the secondary side of the transformer.
Claims5
A resonance converter comprising:
- an insulating transformer, the secondary side of which is the high-voltage side of at least 1 KV;
- switching means for on/off control of electric power supplied to the primary side of said insulating transformer;
- smoothing-rectifying means for smoothing-rectifying induced electric power on the secondary side of said insulating transformer;
- and
- control means, coupled to said smoothing-rectifying means, for performing on/off control of said switching means in accordance with a direct current voltage supplied from said smoothing-rectifying means;
- and
- a resonance circuit wherein resonance is generated only by leakage inductance and distributed capacity on the secondary side of said insulating transformer.
4 more elements
A resonance converter comprising:
- an insulating transformer, the secondary side of which is the high-voltage side of at least 1 KV;
- switching means for on/off control of electric power supplied to the primary side of said insulating, transformer:
- smoothing-rectifying means for smoothing-rectifying induced electric power on the secondary side of said insulating transformer;
- and
- control means, coupled to said smoothing-rectifying means, for performing on/off control of said switching means in accordance with a direct current voltage supplied from said smoothing-rectifying means;
- and
- a resonance circuit wherein resonance is generated by leakage inductance and distributed capacity on the secondary side of said insulating transformer;
- wherein a condenser is connected in parallel with one of an input and an output of a rectifying portion of said smoothing-rectifying means for regulating the resonance frequency of said resonance circuit.
5 more elements
Dependencies are inferred from the claim text.