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Equivalent simulation method of full-bridge sub-module

A technology of full-bridge sub-module and simulation method, which is applied in the field of effective simulation, can solve problems such as the complexity of full-bridge sub-module simulation model components, and achieve the effect of simple simulation model and improved simulation efficiency

Active Publication Date: 2017-02-15
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a full-bridge sub-module equivalent simulation method, which is used to solve the problem that the current full-bridge sub-module simulation model components are complicated

Method used

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  • Equivalent simulation method of full-bridge sub-module
  • Equivalent simulation method of full-bridge sub-module
  • Equivalent simulation method of full-bridge sub-module

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Embodiment Construction

[0048] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] An embodiment of a full bridge submodule equivalent simulation method of the present invention, comprising the following steps:

[0050] The establishment of the simulation circuit of the full bridge sub-module is as follows: figure 1 shown, including three controllable voltage sources U eq1 , U eq2 , U eq3 , a controlled resistor R eq and two diodes D 1 and D 2 , where the controllable voltage source U eq1 The positive pole of the corresponding to the positive pole of the full bridge sub-module simulation circuit, the controllable voltage source U eq1 The negative pole of the controlled resistor R eq Connect the controllable voltage source Ueq2 The positive pole and the controllable voltage source U eq3 positive pole of the controllable voltage source U eq2 The cathode of the diode D is connected 1 The negative pole of the...

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Abstract

The invention relates to an equivalent simulation method of a full-bridge sub-module. Simulation of a simulation circuit is achieved by obtaining operating parameters of the full-bridge sub-module and building the simulation circuit of the full-bridge sub-module. According to the method, thevenin equivalent processing is carried out on the full-bridge sub-module by regarding a switching device as a controlled resistor, and building of a full-bridge sub-module simulation model is achieved by using controlled voltage sources and the controlled resistor. Only three controlled voltage sources, one controlled resistor and two diodes are utilized by the simulation model; designed components are relatively few; the simulation model is simple; and improvement of the simulation efficiency of the simulation model is facilitated.

Description

technical field [0001] The invention belongs to the technical field of power system simulation, and in particular relates to an equivalent simulation method of a full-bridge sub-module. Background technique [0002] In 2003, German scholars first proposed the modular multilevel converter (MMC) topology. The bridge arms of this type of topology adopt the form of cascading basic operating units to avoid direct series connection of a large number of switching devices, and there is no consistent triggering problem. , so it has received extensive attention from academia and industry in recent years, and has been rapidly applied to engineering practice. [0003] The bridge arm of the MMC topology is composed of multiple sub-modules in series. The structure of the sub-modules can be divided into different types according to the needs of the application. At present, there are three types of half-bridge sub-modules, full-bridge sub-modules and clamping twin sub-modules. . Among the...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 周保荣吴金龙行登江王先为熊卿高岩冯勇亮
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD