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Method for suppressing control conflicts in MMC distributed control system

A technology of distributed control and suppression control, which is applied in the direction of output power conversion device, electrical components, AC power input conversion to DC power output, etc., and can solve problems such as control conflicts in MMC distributed control systems

Active Publication Date: 2020-06-12
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Main purpose of the present invention is to provide the method for suppressing control conflict in MMC distributed control system, to solve the problem of MMC distributed control system control conflict in the prior art

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  • Method for suppressing control conflicts in MMC distributed control system
  • Method for suppressing control conflicts in MMC distributed control system
  • Method for suppressing control conflicts in MMC distributed control system

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Embodiment Construction

[0041] The present invention will be clearly and completely described below in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before the present invention is described in conjunction with the accompanying drawings, it should be pointed out that:

[0042] The technical solutions and technical features provided in each part of the present invention, including the following description, can be combined with each other under the condition of no conflict.

[0043] In addition, the embodiments of the present invention referred to in the following description are generally only some embodiments of the present invention, not all of them. Therefore, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] About terms and unit...

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Abstract

The invention discloses a method for suppressing control conflicts in an MMC distributed control system. The method comprises the steps of 1, establishing a simplified model of the MMC distributed control system; 2, determining the cause of control conflict according to the established MMC distributed control system simplified model; and 3, suppressing the control conflict according to the cause of the control conflict. The method is specified, and the control conflict can be suppressed and the stability of the MMC distributed control system can be enhanced by satisfying the finally obtained expression.

Description

technical field [0001] The invention relates to the technical field of medium and high voltage applications, in particular to a method for suppressing control conflicts in an MMC distributed control system. Background technique [0002] Currently, modular multilevel converters (MMCs) have become one of the most promising topologies in medium and high voltage applications (eg HVDC transmission, medium voltage motor drives). MMC has been widely used in industry because of its many advantages (such as flexibility, scalability, and high reliability). [0003] The MMC distributed control system is a "one master and multiple slaves" architecture, using the central controller (master controller) to realize current sampling and output power control; using sub-controllers (slave controllers) to realize capacitor voltage sampling, sub- The control of the module capacitor voltage and circulating current, and the modulation of the control signal of each sub-module; the information tran...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/483
CPCH02M7/483H02M7/4835
Inventor 杨顺风刘顺黄景春
Owner SOUTHWEST JIAOTONG UNIV