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Melt-blown cloth electret power supply based on full-control rectifier bridge and half-bridge LLC resonance circuit

A resonant circuit, fully controlled rectification technology, applied in the direction of high-efficiency power electronic conversion, electrical components, regulating electrical variables, etc., can solve the problems of harmonic pollution of the power grid, low effective value of the output voltage of the uncontrolled rectifier bridge, etc., to reduce pollution, The effect of reducing the difficulty of design and production and running well

Inactive Publication Date: 2021-04-30
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the melt-blown fabric electret power supply, the main structure of the pre-stage rectification part of the commonly used power topology is an uncontrolled rectifier bridge. Although its structure is simple and easy to control, the effective value of the output voltage of the uncontrolled rectifier bridge is low. Power grid has large harmonic pollution

Method used

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  • Melt-blown cloth electret power supply based on full-control rectifier bridge and half-bridge LLC resonance circuit
  • Melt-blown cloth electret power supply based on full-control rectifier bridge and half-bridge LLC resonance circuit
  • Melt-blown cloth electret power supply based on full-control rectifier bridge and half-bridge LLC resonance circuit

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Embodiment Construction

[0028]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicati...

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Abstract

The invention relates to the technical field of melt-blown cloth electret power supplies, in particular to a melt-blown cloth electret power supply based on a full-control rectifier bridge and a half-bridge LLC resonance circuit, which comprises a power grid alternating-current voltage Vac, a full-control rectifier bridge circuit, a first direct-current capacitor C1, a second direct-current capacitor C2, a first voltage-sharing resistor R1, a second voltage-sharing resistor R2, a half-bridge LLC resonance circuit and a high-voltage pack. The power grid alternating-current voltage Vac is connected with the input end of the full-control rectifier bridge circuit, the output end of the full-control rectifier bridge circuit is connected with the input end of the half-bridge LLC resonance circuit, and the output end of the half-bridge LLC resonance circuit is connected with the high-voltage pack. The loss of a power electronic device running in a high output power state for a long time can be reduced, the step-up transformation ratio of a flyback transformer is reduced, the design difficulty of the flyback transformer is reduced, and the reliability of the power supply is improved; the conversion efficiency of the rectification link is improved, the utilization rate of electric energy is improved, the effect of improving the production efficiency is achieved, and therefore the economic benefits of the melt-blown electret power supply are improved.

Description

technical field [0001] The present invention relates to the technical field of electret power supply for meltblown cloth, in particular to a kind of electret power supply for meltblown cloth based on a full-control rectifier bridge and a half-bridge LLC resonant circuit. Background technique [0002] At present, in the melt-blown fabric electret power supply, the main structure of the pre-stage rectification part of the commonly used power topology is an uncontrolled rectifier bridge. Although its structure is simple and easy to control, the effective value of the output voltage of the uncontrolled rectifier bridge is low. The power grid has large harmonic pollution. [0003] For this reason, the present invention proposes a melt-blown cloth electret power supply based on a fully-controlled rectifier bridge and a half-bridge LLC resonant circuit, and realizes control of the output voltage through bipolar PWM modulation and double closed-loop (PI+PR) control methods , effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M3/335H02M1/14H02M1/12
CPCH02M1/12H02M1/14H02M3/33569H02M7/219Y02B70/10
Inventor 张雷崔瑾郑一专周玲玲吴典姚子豪杨德健任磊
Owner NANTONG UNIVERSITY
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