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Bidirectional resonant converter

A technology of resonant converters and transformers, used in instruments, converting DC power input to DC power output, adjusting electrical variables, etc., can solve the problem of inability to achieve soft switching characteristics, reduce core loss and winding loss, and eliminate three times. Effects of harmonic currents

Inactive Publication Date: 2019-11-01
GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The current three-phase resonant converter has no resonant element on the secondary side, and cannot achieve soft switching characteristics during reverse operation

Method used

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Embodiment Construction

[0016] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0017] Such as figure 1 An embodiment shown: a bidirectional resonant converter, including a first three-phase full-bridge circuit connected in sequence, a first resonant circuit, a second resonant circuit and a second three-phase full-bridge circuit, the first The output end of the three-phase full-bridge circuit is connected to the input end of the first resonant circuit, and the first resonant circuit is connected to the second resonant circuit through the transformer subunit between the two, and the output end of the second resonant circuit Connect to the input of the second three-phase full-bridge circuit.

[0018] The first three-phase full-bridge circuit...

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Abstract

The invention discloses a bidirectional resonant converter. The bidirectional resonant converter comprises a first three-phase full-bridge circuit, a first resonance circuit, a second resonance circuit and a second three-phase full-bridge circuit which are connected in sequence. The output end of the first three-phase full-bridge circuit is connected with the input end of the first resonance circuit. The first resonance circuit and the second resonance circuit are connected through a transformer subunit between the first resonance circuit and the second resonance circuit. The transformer subunit comprises a primary winding and a secondary winding. The output end of the second resonance circuit is connected with the input end of the second three-phase full-bridge circuit. A resonance element is added to the secondary side of the transformer. The full-range soft switching characteristic during forward and reverse energy transmission can be achieved.

Description

technical field [0001] The invention discloses a bidirectional resonant converter and relates to the technical field of power electronics. Background technique [0002] The traditional single-phase resonant converter has limited power conversion capability due to the influence of current stress on the components. Compared with the single-phase design, the three-phase design has the advantages of high power density and low current per phase. The secondary side of the current three-phase resonant converter does not have a resonant element, so it is impossible to achieve soft switching characteristics during reverse operation. Contents of the invention [0003] The present invention aims at the defects in the above-mentioned background technology, and provides a bidirectional resonant converter. A resonant element is added to the secondary side of the transformer, which can realize full-range soft switching characteristics during forward and reverse energy transmission. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33584Y02B70/10
Inventor 黄秋燕段建华郑隽一杨志
Owner GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.
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