Controllable HFAC /DC (High Frequency Alternating Current/Direct Current) converter based on LCL-T resonant network

A resonant network and converter technology, applied in the field of controllable HFAC/DC converters, can solve the problems of the resonant rectifier being sensitive to input voltage fluctuations, difficult to achieve constant output voltage, without controllable means, etc., and achieve low input current distortion rate. , to achieve the effect of controllability and excellent performance

Inactive Publication Date: 2015-05-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used resonant converters often do not contain controllable means. Resonant rectifiers are often sensitive to input voltage fluctuations, and it is difficult to achieve a constant output voltage. Difficulty of application

Method used

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  • Controllable HFAC /DC (High Frequency Alternating Current/Direct Current) converter based on LCL-T resonant network
  • Controllable HFAC /DC (High Frequency Alternating Current/Direct Current) converter based on LCL-T resonant network
  • Controllable HFAC /DC (High Frequency Alternating Current/Direct Current) converter based on LCL-T resonant network

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Embodiment

[0021] Such as figure 1 Shown is a schematic structural diagram of a controllable HFAC / DC converter based on an LCL-T resonant network; the controllable HFAC / DC converter based on an LCL-T resonant network consists of an LCL-T resonant network X and a voltage control unit Y and rectifier bridge unit Z; LCL-T resonant network X is composed of the first inductor L 1 , the second inductance L 2 and resonant capacitor Cs, in which the inductance and capacitance resonate at the frequency of the input high-frequency AC voltage source; the voltage control unit Y consists of two first switch tubes S connected in reverse series 1 and the second switch tube S 2 composition, the first switching tube S 1 The drain of the first diode VD with the s1 The positive connection of the first switch tube S 1 source of the first diode VD s1 The cathode connection of the second switch tube S 2 the drain of the second diode VD s2 The cathode connection of the second switch tube S 2 source an...

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Abstract

The invention discloses a controllable HFAC / DC (High Frequency Alternating Current / Direct Current) converter based on an LCL-T resonant network. The controllable HFAC / DC converter comprises an LCL-T resonant network X, a voltage control unit Y and a rectifying bridge circuit Z which are connected in sequence, wherein the voltage control unit Y comprises a first switch tube S1, a second switch tube S2, a first diode VDs1 and a second diode VDs2; the first switch tube S1 and the second switch tube S2 are connected in series reversely; the drain electrode of the first switch tube S1 is connected with the anode of the first diode VDs1; the source electrode of the first switch tube S1 is connected with the cathode of the first diode VDs1; the drain electrode of the second switch tube S2 is connected with the cathode of the first diode VDs1; the source electrode of the first switch tube S1 is connected with the anode of the first diode VDs1. The controllable HFAC / DC converter has the advantages of simple principle, easiness in implementation and the like.

Description

technical field [0001] The invention relates to a high-frequency alternating current power distribution (HFAC PDS) technology, in particular to a controllable HFAC / DC converter based on an LCL-T resonant network. Background technique [0002] Compared with the DC PDS method, the high-frequency AC power distribution (HFAC PDS) method has the advantages of convenient voltage conversion and high power density. It can be applied to computers and communication equipment with low power and short-distance transmission. It is applied in the fields of electric vehicles and microgrids with medium power and long distance transmission. The HFAC / DC converter is responsible for converting high-frequency alternating current into direct current to supply the load. At present, the commonly used resonant converters often do not contain controllable means. Resonant rectifiers are often sensitive to input voltage fluctuations, and it is difficult to achieve a constant output voltage. Difficul...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02M7/12
CPCH02M7/12
Inventor刘俊峰曾君李学胜孙伟华
OwnerSOUTH CHINA UNIV OF TECH