Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An interleaved parallel high-frequency isolated three-phase PWM rectifier

A high-frequency isolation and parallel technology, applied in the direction of converting AC power input to DC power output, instruments, high-efficiency power electronic conversion, etc. problems, to achieve the effect of improving efficiency, achieving electrical isolation, and reducing ripple

Inactive Publication Date: 2018-12-18
ZHEJIANG UNIV
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the traditional PWM rectifier, at high switching frequency, the switching loss of the switching tube will increase proportionally, the circuit efficiency will drop a lot, and the system will generate serious electromagnetic interference

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
  • An interleaved parallel high-frequency isolated three-phase PWM rectifier
  • An interleaved parallel high-frequency isolated three-phase PWM rectifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0029] figure 1 A schematic structural diagram of an isolated rectifier based on a three-phase interleaved parallel PFC circuit and LLC resonance provided for the embodiment. Such as figure 1 As shown, the isolated three-phase PWM rectifier provided in this embodiment includes a full-bridge LLC resonant circuit, wherein the primary side of the full-bridge LLC resonant circuit includes a three-phase interleaved parallel PFC circuit to form a full-bridge circuit structure, and the secondary side is a full-wave rectifier circuit structure. The specific structure is as fo...

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 provides an interleaved parallel high-frequency isolated three-phase PWM rectifier, comprising: an interleaved parallel three-phase PWM rectifier circuit; Three LLC resonant cavities, two ends of each resonant cavity are respectively connected to the midpoints of two bridge arms of each phase PWM rectifier circuit; Three high-frequency transformers, the primary side of each high-frequency transformer is connected with each LLC resonant cavity correspondingly; An output rectifier circuit is connected to the secondary side of the three high frequency transformers. The rectifier reduces the number of switching transistors, thereby improving the efficiency of the entire rectifier. The converter can make the input current well follow the input voltage and realize the function of power factor correction. By controlling the output voltage, the converter achieves stable DC voltage output. In addition, the converter has a high-frequency transformer, which can achieve electrical isolation.

Description

technical field [0001] The invention belongs to the field of power electronics, and in particular relates to an interleaved parallel high-frequency isolation type three-phase PWM rectifier. Background technique [0002] With growing concerns about the environment and energy costs, more renewable energy is being integrated into the grid in the form of distributed generation. Distributed power generation systems based on renewable energy are usually connected to energy storage systems and grids through power electronic converters. This kind of system structure has higher control flexibility through proper management and control, so as to meet the reliability and power quality requirements of the system. [0003] Three-phase AC / DC converters are widely used in motor drives, uninterruptible power supplies, etc., and can also be used as distributed grid interfaces for renewable energy generation such as solar energy, wind energy, and batteries. Distributed power generation has ...

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
IPC IPC(8): H02M7/219H02M3/335H02M1/14H02M1/42
CPCH02M1/14H02M1/4241H02M3/33523H02M3/33569H02M7/219H02M1/0058Y02B70/10
Inventor 邓焰李广地王昆张盈曦
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com