Unlock instant, AI-driven research and patent intelligence for your innovation.

Modular multi-level converter control system and control method

A modular multi-level control system technology, applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc., can solve the problem that the control module cannot be controlled by sub-modules and affects the reliability of the DC transmission system , Optical fiber communication does not have redundant configuration and other issues, to achieve the effect of improving reliability

Pending Publication Date: 2017-05-10
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
View PDF9 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing DC transmission system based on modular multilevel converters, there is no redundant configuration for optical fiber communication between the control module and each sub-module of the modular multilevel converter. When the optical fiber communication between a sub-module of the flat converter and the control module fails, the sub-module cannot communicate with the control module, resulting in the control module being unable to control the sub-module, thereby affecting the entire modular-based Reliability of DC Transmission System with Multilevel 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
  • Modular multi-level converter control system and control method
  • Modular multi-level converter control system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An embodiment of the present invention provides a modular multilevel converter control system, specifically, as figure 1 As shown, the modular multilevel converter control system includes: a modular multilevel converter 1 and a control module 2, the modular multilevel converter includes a plurality of sub-modules 11, and each sub-module 11 is connected to The control modules 2 are connected, and two adjacent sub-modules 11 are connected to each other. For example, two adjacent sub-modules 11 can be connected to each other through two unidirectional communication optical fibers.

[0025] It should be noted that in the modular multilevel converter control system provided by the embodiment of the present invention, the topology structure of the sub-module 11 in the modular multilevel converter 1 is not improved. The topology structure of the sub-modules 11 in the flat converter 1 may be an existing half-bridge structure, a full-bridge structure, or a clamp structure, etc.,...

Embodiment 2

[0039] An embodiment of the present invention provides a control method for a modular multilevel converter, using the modular multilevel converter control system provided in Embodiment 1 of the present invention to control the modular multilevel converter, specifically Specifically, the control method of the modular multi-level converter includes: when any sub-module in the modular multi-level converter fails to connect to the control module, the sub-module is a communication fault sub-module; The adjacent submodule of the submodule communicates with the communication failure submodule.

[0040] Exemplarily, as figure 1 As shown, when the connection between a certain sub-module 11 in the modular multilevel converter and the control module 2 fails, the control module 2 cannot directly transmit signals with the sub-module 11. At this time, The control module 2 can transmit signals with the sub-module 11 through the sub-module 11 adjacent to and connected to the sub-module 11 , ...

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 modular multi-level converter control system and control method and belongs to direct current transmission technical field. According to an existing modular multi-level converter-based direct-current transmission system, when optical fiber communication between a certain sub-module of a modular multi-level converter and a control module fails, the sub-module cannot communicate with the control module, and as a result, the control module cannot control the sub-module, and the invention aims to solve the problem. The modular multi-level converter control system includes a modular multi-level converter and a control module; the modular multi-level converter comprises a plurality of sub-modules; each of the sub-modules is connected with a control module in a direct-current power transmission system; and two adjacent sub-modules are connected with each other. The modular multi-level converter control system of the present invention is applied to controlling a modular multi-level converter.

Description

technical field [0001] The invention relates to the technical field of direct current transmission, in particular to a modular multilevel converter control system and control method. Background technique [0002] With the development of power electronics technology, DC transmission systems based on modular multilevel converters have developed rapidly. In the DC transmission system based on the modular multilevel converter, since the number of sub-modules included in the modular multilevel converter is large, it is necessary to control the modular multilevel converter through the control module Each sub-module is controlled. [0003] However, in the existing DC transmission system based on modular multilevel converters, there is no redundant configuration for optical fiber communication between the control module and each sub-module of the modular multilevel converter. When the optical fiber communication between a sub-module of the flat converter and the control module fai...

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): H02M7/483H02M1/092
CPCH02M1/092H02M7/483
Inventor 黄润鸿朱喆许树楷陈俊邹常跃周月宾
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com