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

HVDC convert and control method thereof

A high-voltage direct current transmission and control method technology, applied in the direction of converting DC power input to DC power output, converting AC power input to DC power output, control/regulation system, etc., can solve fault ride-through failure and converter commutation failure and other problems to achieve the effect of fault ride-through and avoid commutation failure

Active Publication Date: 2019-01-08
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the technical problems of how to overcome the commutation failure and fault ride-through failure of the converter

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
  • HVDC convert and control method thereof
  • HVDC convert and control method thereof
  • HVDC convert and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0063] See attached figure 1 , figure 1 The main structure of the HVDC converter in this embodiment is exemplarily shown. Such as figure 1 As shown, the HVDC converter in this embodiment mainly includes a first commutation circuit and a second commutation circuit. Specifically, the first commutation circuit may include multiple power sub-modules ( figure 1 The shown power sub-module PM-1 to power sub-module PM-K), the DC side ports of each power sub-module are connected in sequence to form the DC side port of the first commutation circuit ( figure 1 The shown terminal P and terminal N form the DC side port). The DC side port of the secon...

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 relates to the technical field of power electronics, in particular to a HVDC converter and a control method thereof, aiming at solving the technical problem of how to overcome the commutation failure and fault crossing failure of the converter. For this purpose, the invention provides a high-voltage direct-current transmission converter and a control method thereof. Specifically, theHVDC converter mainly comprises a first converter circuit formed by cascading a plurality of power sub-modules, The first converter circuit can output a multi-level AC pulse voltage, thereby drivingthe half-controlled power electronic device in the second converter circuit to be turned on or off actively or passively, and realizing fault crossing when a fault occurs on the high-voltage AC voltage source side. In this process, the commutation failure of HVDC converter can be effectively avoided without considering the voltage phase of HVAC voltage source side.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a high-voltage direct current transmission converter and a control method thereof. Background technique [0002] The HVDC converter (High Voltage Direct Current Converter, HVDC Converter) mainly includes a line commutated converter (Line Commutated Converter, LCC) based on a thyristor and a flexible converter based on a Voltage-Source Converter (VSC). DC converter. [0003] Specifically, the commutation / commutation control of the thyristor-based grid commutation converter mainly depends on the turn-on and turn-off of the thyristor, and the turn-off of the thyristor is mainly controlled by the peripheral circuit and the controllable quantity of the thyristor only includes triggering horn. Therefore, this kind of converter has the risk of commutation failure and also has the disadvantages of large harmonics and reactive current. Although the invention patent applicatio...

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): H02M7/521H02M3/155H02M3/135H02M1/06
CPCH02M1/06H02M3/135H02M3/155H02M7/521H02M1/007
Inventor 李子欣高范强徐飞赵聪李耀华王平
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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