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Simulation method of half-bridge type power sub-module

A technology of power sub-module and simulation method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of high computational complexity, cannot accurately reflect the transient process of modular multilevel converters, and cannot Meet the requirements of real-time simulation of modular multilevel converters and other issues, and achieve the effect of simple algorithm

Pending Publication Date: 2016-12-07
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Application Information

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Problems solved by technology

However, the Hefner model and Kraus model, which are maturely used in offline simulation software SABER and SPICE, have high computational complexity and cannot meet the requirements for real-time simulation of modular multilevel converters. It cannot accurately reflect the transient process of the modular multilevel converter

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  • Simulation method of half-bridge type power sub-module
  • Simulation method of half-bridge type power sub-module
  • Simulation method of half-bridge type power sub-module

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Embodiment Construction

[0057] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] In the following, a simulation method of a half-bridge power submodule provided by an embodiment of the present invention will be described with reference to the accompanying drawings.

[0059] figure 1 This is a schematic flow diagram of a simulation method of a half-bridge power sub-module in an embodiment of the present invent...

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Abstract

The invention provides a simulation method of a half-bridge type power sub-module. The simulation method comprises the following steps: determining a commutation state of a half-bridge type power sub-module model; and calculating a transient state work characteristic index according to the commutation state and a switching characteristic curve of a power switching device. Compared with the prior art, the simulation method of the half-bridge type power sub-module, provided by the invention, can really reflect offline and online simulation of transient state characteristics of the power switching device and the technical problems of a transient state simulation model of a real-time simulation model powerless switching device are overcome.

Description

Technical field [0001] The invention relates to the field of power electronics and simulation technology, in particular to a simulation method of a half-bridge power sub-module. Background technique [0002] Modular Multilevel Converter (MMC) is the main equipment for AC-DC conversion in the field of high-voltage flexible direct current transmission. Its working reliability has an important influence on the stable operation of high-voltage flexible direct current transmission. Before the modular multilevel converter is put into actual operation, it is usually analyzed and verified by simulation at the theoretical level, so as to avoid unnecessary economic losses due to defects in the technical theory design during the development process. [0003] The topology and control algorithm of the modular multilevel converter are relatively complex, mainly including three topological structures: Half Bridge Sub-Module (HBSM), Full Bridge Sub-Module (Full Bridge Sub-Module) , FBSM) and Clam...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367G06F30/30
Inventor 陆振纲于弘洋刘宗烨祁欢欢刘海军宋洁莹彭傊尉志勇葛菁杨士慧闫卫国幺军蒋菱李国栋刘云霍现旭
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD