Simulation method of full-bridge type power submodule
A technology of power sub-modules and simulation methods, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problem of high computational complexity, cannot meet the requirements of real-time simulation of modular multilevel converters, cannot Accurately reflect the transient process of modular multilevel converters and other issues
Pending Publication Date: 2016-11-23
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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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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[0077] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.
[0078] A simulation method of a full-bridge power sub-module provided by an embodiment of the present invention will be described below with reference to the accompanying drawings.
[0079] figure 1 It is a schematic flow chart of a simulation method of a full-bridge power sub-module in an embodiment of the present invention. As...
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The invention provides a simulation method of a full-bridge type power submodule. The method comprises the steps that a current conversion state of a full-bridge type power submodule model is determined; a transient-state operating characteristic index is calculated according to the current conversion state and a switching characteristic curve of a power switching device. Compared with the prior art, according to the simulation method of the full-bridge type power submodule, offline and online simulation reflecting the transient-state characteristic of the power switching device can be achieved, and the technical problem that in the prior art, a power switching device transient-state simulation model does not exist among real-time simulation models is solved.
Description
technical field [0001] The invention relates to the technical field of power electronics and simulation, in particular to a simulation method of a full-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, and its working reliability has an important impact 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 means of simulation at the theoretical level, so as to avoid unnecessary economic losses caused by technical theoretical design defects during the development process. [0003] The topology and control algorithm of modular multilevel converters are relatively complex, mainly including three topologies: Half Bridge Sub-Module (HBSM), Full Bridge Sub-Module (HBSM) , FBSM) and clamping double sub-...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 于弘洋陆振纲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