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A kind of multi-resonant lcllc converter system and its control method

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

Active Publication Date: 2022-06-21
TSINGHUA UNIV +1
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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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  • A kind of multi-resonant lcllc converter system and its control method
  • A kind of multi-resonant lcllc converter system and its control method
  • A kind of multi-resonant lcllc converter system and its control method

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[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that w...

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Abstract

The present invention relates to a multi-resonance LCLLC converter system and its control method, which includes: an isolation transformer; a first converter arranged on the primary side of the isolation transformer; a main resonant branch arranged on the first converter Between the transformer and the isolation transformer; the auxiliary resonant branch is connected in parallel with the main resonant branch; the resonant current waveform is adjusted through the auxiliary resonant branch, and the effective value of the current is reduced and the switch is reduced under the same power transmission. conduction loss of the device; the second converter is arranged on the secondary side of the isolation transformer. The invention solves the problems in the prior art that a wide voltage gain range cannot be effectively realized and power transmission is limited due to factors such as topology, and the invention can be widely applied in the fields of power grids, electric vehicles, and energy storage.

Description

technical field [0001] The invention relates to the fields of power grids, electric vehicles and energy storage, in particular to a multi-resonance LLLLC converter system and a control method thereof. Background technique [0002] In power conversion fields 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, which can greatly reduce the switching loss, relieve the heat dissipation pressure, further increase the operating frequency of the converter, reduce the volume and weight of the converter, and improve its power density. Resonant isolated DC / DC converters often include high-frequency transformers to isolate the primary and secondary sides to ensure the insulation and safety requirements of the primary and secondary sides. Howe...

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Application Information

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Patent Type & Authority Patents(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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