高压直流输电系统模块化多电平变换器子模块故障时输出电压电平控制算法

2016 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE) Pub Date : 2016-12-01 DOI:10.1109/WIECON-ECE.2016.8009101

M. Alim, M. Khan, M. A. Munjer, S. Kabir

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引用次数: 1

摘要

提出了一种自动跟踪子模块故障的新算法，并在子模块故障的基础上减少了高压直流输电系统中模块化多电平变换器(MMC)的电平数和输出电压。采用载波和信号(参考)幅度控制正弦脉宽调制(CSMC-SPWM)技术产生MMC变换器的门脉。这种CSMC-SPWM技术用于在正常状态下运行变换器，并为故障子模块(SM)产生脉冲，以绕过非故障子模块的供电电压，降低运行水平和变换器输出电压，从而使变换器在大量子模块故障期间保持运行状态。仿真结果表明，MMC在任何工作水平下都能很好地工作，并且在输出电压较低的情况下，逆变器的任何相位都能完全消除故障SMs。

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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Output voltage and level control algorithm during submodule fault of modular multilevel converter for HVDC transmission system

This paper presents a new algorithm which automatically tracks submodule fault and on the basis of submodule fault reduces the number of level and output voltage of modular multilevel converter (MMC) in high-voltage DC transmission system. Carrier and Signal (reference) Magnitude Control Sinusoidal Pulse Width Modulation (CSMC-SPWM) technique is used to generate gate pulses of the MMC converter. This CSMC-SPWM technique is used for running the converter under normal condition and also generates pulses for the faulty Sub-Modules (SM) to bypass the supply voltage to un-faulty SMs and decrease the level of operation as well as converter output voltage so the converter remains in operating conditions during the large number of submodule fault. The simulation results show that MMC operates well to any level of operation and faulty SMs are completely removed from any phase of the inverter with lower output voltage.

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来源期刊

2016 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)

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