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Multi-resonance LCLLC converter system and control method thereof

A control method and converter technology, applied in control/regulation systems, conversion of DC power input to DC power output, instruments, etc., can solve the problem of wide voltage gain range, limited power transmission, resonant isolated DC/DC converter, etc. problem, to achieve the effect of simplifying the design difficulty, reducing the effective value, and reducing the conduction loss

Active Publication Date: 2021-10-08
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Aiming at the resonant isolated DC / DC converter with wide voltage gain range and limited power transmission in the above-mentioned prior art due to factors such as topology, the purpose of the present invention is to provide a multi-resonant LCLLC converter system and its control method

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  • Multi-resonance LCLLC converter system and control method thereof
  • Multi-resonance LCLLC converter system and control method thereof
  • Multi-resonance LCLLC converter system and control method thereof

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0032] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "compr...

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Abstract

The invention relates to a multi-resonance LCLLC converter system and a control method thereof. The multi-resonance LCLLC converter system comprises an isolation transformer; a first converter arranged on a primary side of the isolation transformer; a main resonance branch circuit arranged between the first converter and the isolation transformer; an auxiliary resonance branch circuit connected with the main resonance branch in parallel; wherein waveforms of a resonance current are adjusted by the auxiliary resonance branch circuit, an effective value of the current is reduced under the same transmission power, and the conduction loss of a switching device is reduced; and a second converter arranged on a secondary side of the isolation transformer. The multi-resonance LCLLC converter system and the control method thereof solve the problems that in the prior art, a wide voltage gain range cannot be effectively achieved due to factors such as topology, and power transmission is limited, and can be widely applied to the power grid field, the electric automobile field and the energy storage field.

Description

technical field [0001] The invention relates to the fields of power grids, electric vehicles and energy storage, in particular to a multi-resonance LCLLC converter system and a control method thereof. Background technique [0002] In the field of power conversion such as power grids, electric vehicle charging, and energy storage power stations, resonant isolated DC / DC converters are often used to achieve efficient power conversion and meet the needs of safe potential isolation. [0003] The resonant isolated DC / DC converter has a good soft switching effect, can greatly reduce switching loss, relieve heat dissipation pressure, further increase the operating frequency of the converter, reduce the volume and weight of the converter, and increase its power density. A resonant isolated DC / DC converter often includes a high-frequency transformer to isolate the primary and secondary sides to ensure the insulation and safety requirements of the primary and secondary sides. However,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33576Y02B70/10
Inventor 赵楠郑泽东李驰张志学陈涛苏亮亮
Owner TSINGHUA UNIV
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