高压直流系统中模块化多电平变换器的可靠性改进

2016 Power Systems Computation Conference (PSCC) Pub Date : 2016-06-20 DOI:10.1109/PSCC.2016.7540942

Stefano Farnesi, M. Marchesoni, L. Vaccaro

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引用次数: 8

摘要

本文通过减小适用于故障的主要无源元件(即电容器电池)的电应力，提高了用于高压直流应用的模块化多电平变换器的可靠性。这种效果是通过注入适当的二次谐波循环电流获得的。重要的是要注意电池电流增量不会增加半导体损耗，但在某些情况下甚至可以减少这种损耗。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Reliability improvement of Modular Multilevel Converter in HVDC systems

In this paper the reliability of a Modular Multilevel Converter for HVDC applications is incremented, by decreasing the electrical stress of the main passive component suitable to fault, that is, the capacitor cell. This effect is obtained with the injection of a suitable cell second harmonic circulating current. It's important to note how the cell current increment does not increase the semiconductor losses, but in some circumstances can even decrease such losses.

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2016 Power Systems Computation Conference (PSCC)

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