A multi-level full-bridge converter and a multi-level isolated bidirectional dc-dc converter

A technology of DC-DC and full-bridge converters, which is applied in the directions of adjusting electrical variables, converting DC power input to DC power output, and converting AC power input to DC power output, etc., which can solve the difficulties and applications of bidirectional DC-DC converters. Issues such as scope limitations

Active Publication Date: 2021-05-11
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0005] The invention provides a multi-level full-bridge converter and a multi-level isolated bidirectional DC-DC converter, which solves the problem that the full-bridge converter in the current DC-DC converter can only output two levels, so that the realization of High-voltage and large-capacity bidirectional DC-DC converters are difficult and technical problems are limited in application range

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  • A multi-level full-bridge converter and a multi-level isolated bidirectional dc-dc converter
  • A multi-level full-bridge converter and a multi-level isolated bidirectional dc-dc converter
  • A multi-level full-bridge converter and a multi-level isolated bidirectional dc-dc converter

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Embodiment Construction

[0033] The embodiment of the present invention provides a multi-level full-bridge converter and a multi-level isolated bidirectional DC-DC converter, which solves the problem that the full-bridge converter in the current DC-DC converter can only output two levels, It is a technical problem that makes it difficult to realize a high-voltage and large-capacity bidirectional DC-DC converter, and the application range is limited.

[0034]In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art w...

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Abstract

The invention discloses a multilevel full-bridge converter and a multilevel isolated bidirectional DC-DC converter. The multi-level full-bridge converter provided by the present invention uses a single-phase flying capacitor to clamp a three-level bridge arm, and a five-level output voltage state can be generated between two AC terminals, which is different from the traditional two-level bridge Compared with the full-bridge converter of the arm, the output voltage capability is doubled, and the output voltage level of the isolated bidirectional DC-DC converter is improved, which solves the problem that the full-bridge converter in the current DC-DC converter can only output Two levels make it difficult to realize a high-voltage and large-capacity bidirectional DC-DC converter, and the technical problem is that the application range is limited.

Description

technical field [0001] The invention relates to the field of power electronic power conversion, in particular to a multilevel full-bridge converter and a multilevel isolated bidirectional DC-DC converter. Background technique [0002] The modern transmission and distribution network has undergone many revolutionary changes, and the demand for DC transmission and distribution is increasing. More and more load centers rely on long-distance transmission of electricity. The DC transmission method has obvious advantages in long-distance power transmission or new energy generation access, and more and more DC-type distributed power grids are also included on the distribution side. Power sources, such as photovoltaic power generation, battery energy storage, etc. More and more loads need to use DC power supply. Such as data centers, LEDs, electric vehicles, etc. And a large number of consumer electronics, such as personal computers, mobile phones and tablet computers. The use o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02M3/335
CPCH02M3/33523H02M3/33584H02M3/33592H02M7/219H02M7/2195
Inventor 曾杰张弛赵伟钟国彬张威胡伊凡梅成林徐琪谢宁曾嵘余占清宋强姚大伟
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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