Resonant converter and current processing method

Abstract

The invention provides a resonant converter and a current processing method. The resonant converter comprises more than two resonant units, wherein each resonant unit comprises a bridge-type inversioncircuit, a resonant circuit, a transformer, a rectification circuit and a filtering circuit, an input end of the bridge-type inversion circuit is connected with an input end of a DC voltage, an output end of the bridge-type inversion circuit is connected with an input end of the resonant circuit, an output end of the resonant circuit is connected with a first end of a primary side of the transformer, a first output end of a secondary side of the transformer is connected with an input end of the rectification circuit, an output end of the rectification circuit is connected with the filtering circuit, second input ends of primary sides of the transformers of more than two resonant units are connected in a triangular or star mode, and a connection point of the primary sides of the transformers of more than two resonant units is in a suspension state.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a resonant converter and a current processing method. Background technique [0002] Resonant converters are more and more widely used in DC-DC conversion circuits due to their advantages of high efficiency and high power density, especially multi-phase interleaved resonant converters. On the basis of inheriting the high efficiency advantages of single-phase resonant converters , and effectively reduces the ripple current, which solves the problem of too many filter capacitors and too large volume when the resonant converter is applied in medium and high power applications. [0003] figure 1 is a multi-phase resonant converter in the related art, such as figure 1 As shown, the existing multi-phase interleaved resonant converter circuit generally connects the input terminal and the output terminal in parallel, and the switching tube drive signals of each phase circuit are stagg...

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Problems solved by technology

[0004] Embodiments of the present invention provide a resonant converter and a current processing method to at least solve the problem of the direct parallel connection of the input terminal and the output terminal of the resonant converter in the related art, resulting in the need to adopt a more complicated control method to ensure the uniformity between the phase circuits. Problems with flow and power balance

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