Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Starting method of flexible DC transmission system

A technology of flexible direct current transmission and power transmission system, which is applied in the field of flexible power transmission and distribution, and can solve problems such as large inrush currents

Active Publication Date: 2016-06-22
TBEA SUNOASIS +2
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for starting a flexible direct current transmission system to solve the problem of large inrush current generated when the converter is unlocked in a flexible direct current transmission system including a diode clamp module

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
  • Starting method of flexible DC transmission system
  • Starting method of flexible DC transmission system
  • Starting method of flexible DC transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The present invention makes the uncontrolled rectification and charging characteristics of the diode clamping module (DCSM) the same as that of the half-bridge module (HBSM) by rationally utilizing the guiding IGBT in the diode clamping module, thereby achieving higher DC bus voltage to reduce the large inrush current generated when the converter is unlocked.

[0044] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. 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.

[0045] The following combination figure 1 , 2 , 3, 4 describe the principle of the present invention in detail.

[0046]...

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 a method for starting a flexible direct current transmission system, which is applied to a flexible direct current transmission system including a diode clamp module. The flexible DC transmission system of the clamp module, and uncontrolled rectification charging; in the second charging stage, the leading IGBT of the converter connected to the grid is turned on, the converter on the rectification side is unlocked, and the converter on the inverter side is unlocked converter, so that the charging voltage of the converter of the diode clamp module can reach the charging voltage of the converter of the half-bridge module, thus solving the shock when the converter is unlocked caused by the low charging voltage of the flexible direct current transmission system of the D-MMC module For the problem of large current, the flexible direct current transmission system is started by this method, and both the alternating current impact and the direct current impact are relatively small.

Description

technical field [0001] The invention relates to the technical field of flexible power transmission and distribution, in particular to a method for starting a flexible DC power transmission system including a diode clamp module. Background technique [0002] Compared with the traditional voltage source converter, the modular multilevel converter (ModularMultileverConverter, MMC) has the advantages of good scalability, small harmonics, low switching frequency, and less requirements for consistent triggering of devices, and is especially suitable for DC transmission application occasions. [0003] In order to reduce the loss and the number of components, the early MMC used the cascaded form of half-bridge submodules, but the MMC in the cascaded form of half-bridge submodules cannot effectively block the DC fault. Therefore, the improved diode clamp module (DiodeClampSubmodule, DCSM) based MMC (called D-MMC) was thus created. In addition to retaining the general advantages of ...

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 Applications(China)
IPC IPC(8): H02J3/36H02M1/36
CPCY02E60/60
Inventor 李战龙侯丹刘伟增黎小林许树楷陈名秦健冯建云
Owner TBEA SUNOASIS
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
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