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A Simulation Speed-Up Method of Modular DC/DC Converter

A modular and converter technology, which is applied in the fields of instruments, calculations, electrical digital data processing, etc., can solve the problem of slow simulation speed of the initial simulation model, and achieve the effect of reducing the running time

Active Publication Date: 2021-08-17
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the simulation speed of the initial simulation model of the modularized DC / DC converter is too slow, and a simulation speed-up model of the modularized DC / DC converter is provided

Method used

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  • A Simulation Speed-Up Method of Modular DC/DC Converter
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  • A Simulation Speed-Up Method of Modular DC/DC Converter

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Embodiment Construction

[0068] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0069] figure 1It is the most common topology of modular DC / DC converters. The connection methods of its sub-modules include series connection of the input side and series connection of the output side, series connection of the input side and parallel connection of the output side, parallel connection of the input side and series connection of the output side, parallel connection of the input side and output side parallel connection. Wait for four.

[0070] In addition, there is also a topological structure such as dividing all the submodules into multiple submodule groups and then performing series-parallel connection among the submodule groups, which is not shown in the figure.

[0071] Through series-parallel connection among sub-modules, the DC voltage gain and rated capacity of the modular DC / DC converter can be adjusted arbitrarily withi...

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Abstract

The invention discloses a simulation speed-up model of a modularized DC / DC converter. The modular DC / DC converter consists of N Two sub-modules (LLC resonant converter) are connected in series and parallel. The simulation speed-up model is composed of computer program modules and N The internal circuit of the sub-module is equivalent to four sets of discrete mathematical models and written into the computer program module by Fortran language. The invention is suitable for the occasion of performing electromagnetic transient simulation on a modularized DC / DC converter containing a large number of sub-modules. Compared with the initial simulation model, the running time can be greatly reduced, and the simulation accuracy is high.

Description

technical field [0001] The invention belongs to the field of power system modeling and simulation, and in particular relates to a simulation speed-up model of a modularized DC / DC converter. Background technique [0002] Usually, in order to meet the capacity and voltage requirements of the power system, the modular DC / DC converter may need to be composed of hundreds of sub-modules, which contain a large number of switching devices, and in order to reduce the volume and weight of the isolation transformer , the switching devices in the sub-module will work in the middle and high frequency state. [0003] When PSCAD / EMTDC performs electromagnetic transient simulation, it needs to invert the node admittance matrix of the simulated system first, and then solve the electrical quantity of each node. [0004] Since the modular DC / DC converter contains a large number of switching devices working in the medium and high frequency state, during the simulation process, PSCAD / EMTDC need...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/367
CPCG06F30/367
Inventor 尹瑞张保瑞任素龙王利杰
Owner STATE GRID HEBEI ELECTRIC POWER RES INST