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A Bidirectional llc Resonant DC-DC Converter

A DC converter and resonant DC technology, which is applied in the direction of converting DC power input to DC power output, instruments, and adjusting electrical variables, etc., can solve the problem of overall circuit performance degradation and other problems

Active Publication Date: 2020-11-17
杭州芯云半导体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore when the reverse operation of the CLLC circuit, the circuit works in area 2, i.e. the current continuous mode, and the overall performance of the circuit decreases

Method used

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  • A Bidirectional llc Resonant DC-DC Converter
  • A Bidirectional llc Resonant DC-DC Converter
  • A Bidirectional llc Resonant DC-DC Converter

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with drawings and embodiments. For the convenience of description, in all the following embodiments, it is assumed that the amplitude variation range of the primary side DC voltage signal V1 is V1min˜V1max, and the secondary side DC voltage signal V2 remains unchanged.

[0054] refer to image 3 The schematic diagram of the first embodiment of the bidirectional LLC resonant DC-DC converter according to the present invention is shown, the bidirectional LLC resonant DC-DC converter includes: primary side resonant conversion network 301, transformer T, secondary side resonant conversion network 302 Further, the transformer T includes a primary winding Wp, a first secondary winding Ws1, and a second secondary winding Ws2.

[0055] Further, the primary side resonant conversion network 301 includes a primary side bridge arm 3001, a primary side filter capacitor Ci, a first resonant inductor Lr1 and a first ...

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Abstract

The application discloses a bidirectional LLC resonant DC-DC converter. The bidirectional LLC resonant DC-DC converter includes: a primary-side resonant conversion network, which converts the input primary-side DC voltage signal into a primary-side high-frequency AC signal when energy is transferred in the forward direction, and converts the input primary-side DC voltage signal into a primary-side high-frequency AC signal when energy is transferred in the reverse direction. The side high frequency AC signal is converted into the primary side DC voltage signal; the secondary side resonant conversion network converts the input secondary side DC voltage signal into the secondary side high frequency AC signal when the energy is transferred in the reverse direction, and when the energy is transferred in the forward direction. The secondary side high-frequency AC signal is converted into the secondary side DC voltage signal; the transformer contains at least one primary side winding and two secondary side windings. When the energy is transferred in the forward direction, only one secondary side winding participates in the energy transfer. Both secondary windings participate in energy transfer; the bidirectional LLC resonant DC-DC converter works in discontinuous mode during forward and reverse energy transfer, improving efficiency.

Description

technical field [0001] The invention belongs to a bidirectional DC-DC converter, specifically, a high-efficiency LLC resonant DC-DC converter, which is suitable for application fields such as energy storage and new energy generation. Background technique [0002] With the tightening of world energy resources and the aggravation of environmental pollution, the development and utilization of new energy has become an urgent problem for human beings to solve. For renewable energy, how to connect these new energies to the grid for power generation and transform them into electric energy that users can directly use is the main research direction in the field of distributed power generation. Since distributed energy itself does not have the function of energy storage, most of today's distributed power generation systems contain auxiliary storage systems, thus forming a hybrid power generation system with energy storage systems. [0003] For the auxiliary energy storage system, if ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353H02M1/0054Y02B70/10
Inventor 谢小高江帅董汉菁
Owner 杭州芯云半导体技术有限公司
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