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Modular unit based on modular multi-level voltage source converter

A voltage source converter, modular multi-level technology, applied in electrical components, magnetic field/electric field shielding, output power conversion devices, etc., to achieve the effect of flexible and adjustable number, avoiding excessive junction temperature and high voltage

Inactive Publication Date: 2011-09-21
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In power electronic equipment, converters with IGBT as the core are widely used in low-voltage systems, but the voltage level of IGBT can only reach several thousand volts, while the voltage level of the power grid may be tens of kilovolts or more

Method used

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  • Modular unit based on modular multi-level voltage source converter
  • Modular unit based on modular multi-level voltage source converter

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, two side supports 1 are located at both ends, several beams 3 are laid in the middle, and several independent sub-modules 2 are installed on the beams.

[0021] Several sub-modules of the module unit are connected in series in sequence, and the number of sub-modules in series is adjusted to meet the needs of different voltage levels; the module is equipped with a cooling water pipeline 5, which is used to ensure the safe operation of high-voltage and high-power power electronic devices and avoid excessive junction temperature. high lead to damage; the module unit is equipped with a communication line 4 to facilitate the communication between each sub-module and the superior controller; a plurality of shielding covers 6 with different shapes are arranged around the module unit to improve the electromagnetic environment around the module unit.

[0022] Several sub-modules of this modular unit are connected in series at one time, and the needs of...

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Abstract

The invention relates to a modular unit based on a modular multi-level voltage source converter, which is characterized by comprising two side supports (1), submodules (2), a transverse beam (3), a communication line (4), a cooling water pipeline (5) and a shielding cover (6); the two side supports (1) are positioned at two ends of the module unit; the transverse beam (3) is laid between the two side supports (1), and a plurality of independent submodules (2) are mounted on the transverse beam; the modular unit is easy to expand so as to obtain the converter with higher voltage and larger capacity; the modular unit is a basically independent module, and integrates the submodules, a cooling system, a communication system and a shielding system; and the modular unit is the basically independent module integrating the submodules, the cooling water pipeline, the communication line and the shielding cover, and is a complete expandable unit.

Description

technical field [0001] The invention relates to power electronic devices, in particular to a module unit of a converter. Background technique [0002] In power electronic equipment, IGBT-based converters are widely used in low-voltage systems. However, the voltage level of IGBT can only reach several thousand volts, while the voltage level of the power grid may be tens of kilovolts or more. In engineering applications, multi-level technology can be used to obtain high-voltage, large-capacity converters. That is to say, the basic independent modules manufactured by low-voltage power devices are expanded into larger module units in a certain way, and through the coordinated control of the control system, the commutation function of higher voltage level and higher power is realized. [0003] The core of the present invention is that the design of the converter module unit composed of several mutually independent basic functional units (referred to as sub-modules) can not only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H05K7/20H05K9/00
Inventor 潘艳李云鹏栾洪洲李强贺之渊
Owner CHINA ELECTRIC POWER RES INST
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