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A New LCCL Resonant Converter

A resonant converter, a new type of technology, used in output power conversion devices, conversion of DC power input to DC power output, instruments, etc., can solve the problem of frequency improvement, limited power semiconductor design and manufacturing technology, electromagnetic radiation and noise. , can not meet the requirements and other problems, to achieve the effect of small loss, high working frequency and high working efficiency

Active Publication Date: 2018-09-18
亚信感知技术(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the increase in frequency is limited by power semiconductor design and manufacturing technology
When the switching frequency is increased to a certain level, the traditional hard switching converter will have the following disadvantages: 1) The switching loss increases significantly; 2) The switching stress increases; 3) The electromagnetic radiation and noise are large
Therefore, LCC will not meet the requirements of such equipment

Method used

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  • A New LCCL Resonant Converter
  • A New LCCL Resonant Converter
  • A New LCCL Resonant Converter

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The novel LCCL resonant converter of this embodiment includes an inverter 1, a resonant cavity, a rectifier 6 and a filter capacitor 7. The output terminal of the inverter 1 is connected to the input terminal of the rectifier 6 through the resonant cavity, and the two outputs of the rectifier 6 Terminals are connected to both ends of the filter capacitor 7, the filter capacitor 7 is connected in parallel with the external load 8, and it is characterized in that the resonant cavity is an LCCL resonant cavity, and the LCCL resonant cavity includes a series resonant inductor 2, a series resonant capacitor 3, and a parallel resonant capacitor 4 and an additional inductance 5, one end of the series resonant inductor 2 is connected to an output end of the inverter, the other end of the series resonant inductor 2 is connected to one end of the series resonant capacitor 3, and the other end of the series resonant capacitor 3 is simultaneously connected to the parallel resonant ca...

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Abstract

The invention relates to a novel LCCL resonant converter which comprises an inverter, a resonant cavity, a rectifier and a filter capacitor. The output end of the inverter is connected with the input end of the rectifier through the resonant cavity. Two output ends of the rectifier are connected with two ends of the filter capacitor. The filter capacitor is connected in parallel with an external load. The novel LCCL resonant converter is characterized in that the resonant cavity is an LCCL resonant cavity; the LCCL resonant cavity comprises a series resonant inductor, a series resonant capacitor, a parallel resonant capacitor and an additional inductor; one end of the series resonant inductor is connected with an output end of the inverter; the other end of the series resonant inductor is connected with one end of the series resonant capacitor; the other end of the series resonant capacitor is connected with one end of the parallel resonant capacitor and one end of the additional inductor; the other end of the parallel resonant capacitor is connected with the other output end of the inverter and the input end of the rectifier at the same time; and the other end of the additional inductor is connected with the other input end of the rectifier.

Description

technical field [0001] The invention belongs to the technical field of DC-DC converters, in particular to a novel LCCL resonant converter. Background technique [0002] With the increase of switching power supply frequency, the power supply will have smaller size and higher power density. Therefore, high frequency is already the development direction of switching power supply technology. However, the increase in frequency is limited by power semiconductor design and manufacturing technology. When the switching frequency is increased to a certain level, the traditional hard-switching converter will have the following disadvantages: 1) The switching loss increases significantly; 2) The switching stress increases; 3) The electromagnetic radiation and noise are large. In order to improve the performance of high-frequency converters, a soft-switching technology is proposed, that is, power devices commutate in a zero-voltage switching (ZVS) or zero-current switching (ZCS) manner...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/338H02M1/14
CPCH02M1/14H02M3/338Y02B70/10
Inventor 杨晓光祁鹏刘朝航徐林亮刘伟民
Owner 亚信感知技术(天津)有限公司
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