A high-reliability dual-transistor push-pull llc resonant converter

A resonant converter, reliable technology, applied in the field of power electronic converters, isolated DC-DC power conversion, can solve the problems of low conversion efficiency, soft switching of rectifier diodes, reverse recovery, etc., to achieve conversion efficiency High, easy to high frequency, low voltage stress effect

Inactive Publication Date: 2017-10-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rectifier diode on the secondary side of the dual-tube push-pull converter cannot realize soft switching, and there is a problem of reverse recovery, and the conversion efficiency is relatively low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high-reliability dual-transistor push-pull llc resonant converter
  • A high-reliability dual-transistor push-pull llc resonant converter
  • A high-reliability dual-transistor push-pull llc resonant converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The technical solution of the present invention will be described in detail in conjunction with the accompanying drawings.

[0026] as attached Figure 4 Shown, described a kind of high reliability two-transistor push-pull LLC resonant converter is by input source (U in ), primary circuit (10), transformer (T), secondary LLC resonant circuit (20), secondary rectifier circuit (30) and output load (R o ), wherein the primary side circuit (10) consists of the primary side first switching tube (S P1 ), the second primary switching tube (S P2 ), the third switching tube on the primary side (S P3 ), the fourth switching tube on the primary side (S P4 ), the primary freewheeling diode (D P1 ), the second freewheeling diode on the primary side (D P2 ), the transformer (T) consists of two primary windings (N P1 , N P2 ) and a secondary winding (N S ), the secondary side LLC resonant circuit (20) consists of the first resonant inductance (L r1 ), the second resonant ind...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a high-reliability double-tube push-pull LLC resonant converter and belongs to the technical field of power electronic converters. The high-reliability double-tube push-pull LLC resonant converter is composed of an input source, a primary circuit, a transformer, a secondary LLC resonant circuit, a secondary rectifying circuit and an output load. On the basis of an original double-tube push-pull converter, two inductors connected in series in the primary circuit are removed, and the LLC resonant circuit is embedded into the secondary structure of the LLC resonant converter so that the reliability of the converter can be obviously improved, the voltage stress of a primary switching tube is reduced, soft switching of all power semiconductor devices is achieved, the efficiency and the power density of the converter are improved, and the requirements of high-reliability and high-voltage input conversion occasions are met.

Description

technical field [0001] The invention relates to a high-reliability dual-tube push-pull LLC resonant converter, which belongs to the technical field of power electronic converters, in particular to the technical field of isolated DC-DC power conversion. Background technique [0002] Switching power supply is widely used in various fields of national production due to its remarkable advantages such as high efficiency, small size and light weight. The rapid development of technical fields such as aviation, aerospace, and new energy power generation has put forward higher requirements for the performance of the converter. How to improve the efficiency, power density and reliability of the converter has always been a key issue in this technical field. [0003] In recent years, traditional LLC resonant converters, such as figure 1 As shown, it has been widely used due to its high efficiency, high power density, and low cost. It can realize soft switching of all power semiconduc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/337
CPCY02P80/10
Inventor 孙文进金翔胡海兵邢岩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap