Resonant converter and current processing method

A technology of resonant converter and resonant circuit, which is applied in the field of communication to achieve the effect of ensuring efficiency and power density and simplifying the control method

Inactive Publication Date: 2018-03-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 te

Method used

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  • Resonant converter and current processing method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0024] Example 1

[0025] In this embodiment, a resonant converter is provided. The resonant converter is composed of two or more resonant units, and the driving signals between the resonant units are staggered by a certain angle to achieve the effect of reducing ripple current. The resonant converter not only has high efficiency, but also can realize current sharing and power balance among the resonant units.

[0026] figure 2 Is a structural diagram of a resonant converter according to an embodiment of the present invention, such as figure 2 As shown, the resonant converter includes more than two resonant units, and each resonant unit includes: a bridge inverter circuit, a resonant circuit, a transformer, a rectifier circuit, and a filter circuit; the input terminal of the bridge inverter circuit and the input of DC voltage The output end of the bridge inverter circuit is connected to the input end of the resonant circuit (for example, the two ends of the bridge inverter circui...

Example Embodiment

[0042] Example 2

[0043] In this embodiment, a current processing method is also provided, Image 6 Is a flowchart of a current processing method according to an embodiment of the present invention, such as Image 6 As shown, the method includes:

[0044] In step S602, the second input terminals of the transformer primary sides of the two or more resonant units of the resonant converter are polygonally connected or star-shaped and the connection points of the transformer primary sides of the two or more resonant units are in a floating state. The current amplitudes of the transformer primary sides of the two or more resonant units are equal, and the two or more resonant units are staggered by a predetermined angle.

[0045] Through the above steps, since the second input terminals of the transformer primary sides of two or more resonant units are triangular connection or star connection, and the transformer primary sides of more than two resonant units are in a floating state, it ...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/14
CPCH02M1/14H02M3/33569H02M3/335Y02B70/10
Inventor 李丹
Owner ZTE CORP
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