High-voltage high-power DC-DC conversion device

A DC conversion and high-power technology, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, conversion of AC power input to DC power output, etc., can solve the problem of insufficient transmission capacity of withstand voltage DC-DC conversion devices , Accelerate the practical and marketization process of high-voltage DC-DC conversion devices, and achieve the effect of accelerating the practical and marketization process and realizing electrical isolation

Inactive Publication Date: 2013-12-04
NR ELECTRIC CO LTD +1
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a high-voltage and high-power DC-DC conversion device, which skillfully utilizes the existing power module series connection technology and low- and medium-frequency sine wave three-phase transformers, and solves the current high-voltage DC-DC conversion problem ve

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
  • High-voltage high-power DC-DC conversion device
  • High-voltage high-power DC-DC conversion device
  • High-voltage high-power DC-DC conversion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the present invention provides a high-voltage and high-power DC-DC conversion device, including a cascaded modular converter 1, a medium-low frequency sine wave three-phase transformer 2 and an input parallel modular converter 3, which will be introduced separately below.

[0042] The cascaded modular converter 1 includes three bridge arms with the same structure, and the upper and lower half bridge arms of each bridge arm respectively contain M (M is a natural number, and M≥2) half-bridge topology power modules SM and 1 reactor, the upper half bridge arm is connected in series with M positive SMs and 1 reactor from the beginning to the end, and the lower half bridge arm is connected in series with 1 reactor and M positive SMs from the beginning to the end. The two reactors of the upper and lower half brid...

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-voltage high-power DC-DC conversion device comprising a cascade modular converter, a medium- and low-frequency sinusoidal three-phase transformer and an input parallel modular converter. The cascade modular converter comprises three bridge arms the same in structure. Each of the upper and lower half bridge arm of each bridge arm comprises at least two half-bridge topology power modules and a reactor, wherein the power modules and the reactor are connected in series. The input end of the medium- and low-frequency sinusoidal three-phase transformer is respectively connected to contacts of the three bridge arms. The input parallel modular converter comprises a modular converter submodule or at least two mutually parallel modular converter submodules, and the input end of every modular converter submodule is connected to the output end of the medium- and low-frequency sinusoidal three-phase transformer. The high-voltage high-power DC-DC conversion device has the advantages that the problems of voltage withstanding, voltage sharing and insufficient transmission capacity in existing high-voltage side switching devices are solved well; the high-voltage high-power DC-DC conversion device is also significant to quickening the utilization and marketization process of high-voltage DC-DC conversion devices.

Description

technical field [0001] The invention relates to a high-voltage DC-DC power conversion and transmission device, in particular to a high-voltage and high-power DC-DC conversion device. Background technique [0002] High-voltage direct current transmission (HVDC) has the characteristics of large transmission power capacity, low loss, long transmission distance, and good stability, and has broad application prospects. In order to adapt to the direct application of high-voltage direct current transmission to electrical equipment in the future, it is necessary to have a DC transformer device with a function similar to that of an AC isolation transformer to convert high-voltage direct current into isolated low-voltage direct current that meets the requirements of electrical equipment. [0003] Since the withstand voltage of a single power semiconductor device is usually limited, a single power semiconductor device cannot be directly applied to high-voltage applications. In order t...

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): H02M3/28H02M3/335H02M7/219H02M1/12
CPCH02M3/33584H02M7/4835
Inventor 杨兵杨浩方太勋王宇石巍吕玮
Owner NR ELECTRIC CO LTD
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