Reconfigurable converter device

Abstract

The invention discloses a reconfigurable converter device, which comprises AC buses, DC buses, a power module, a multichannel switching module, a converting assist module, a measurement control moduleand the like. Through switching of the multichannel switching module, various power-type power electronic devices in the power module can be connected with any phases of the AC buses and the DC busesand can dynamically adjust the system structure and the converting capacity of the whole converter device according to the running state of the converter device. The reconfigurable converter device is simple and feasible in technological means; the converting capacity and the converting system structure can be dynamically adjusted, the utilization rates of various converting branches of the powermodule can be improved and the overall converting capacity can be reduce by fully utilizing the time differences between the AC buses and the DC buses in the converting capacity, and when one converting branch exits due to a fault, the other converting branches can be input through the multichannel switching module to replace the exited converting branch, thereby improving the stability and the reliability of the overall device.

Description

technical field [0001] The invention relates to an AC / DC converter system in the field of power electronics, in particular to a reconfigurable converter device suitable for various AC / DC conversion converter systems. Background technique [0002] With the development of new energy sources such as wind energy, solar energy, tidal energy, and wave energy, the development of electromechanical equipment control, and AC and DC power transmission and transformation, power electronics technology has been widely used. These systems usually require AC and DC interaction. convert. [0003] At present, the structure of the converter system is fixed after design. In order to meet the extreme working conditions in the converter system during design, each power supply and load need to be equipped with a large converter capacity and the capacity is fixed, so that the converter system The cost increases, the flexibility decreases, and when the power device of the converter system fails, th...

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Problems solved by technology

[0003] At present, the structure of the converter system is fixed after design. In order to meet the extreme working conditions in the converter system during design, each power supply and load need to be equipped with a large converter capacity and the capacity is fixed, so that the converter system Increased cost, reduced flexibility, and when the power device of the converter system fails, the entire system needs to be shut down. Even if the redundant design is adopted, the performance of the system will be reduced and the cost will be greatly increased.

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