| 一种新型模块化多电平换流器调制策略研究 |
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| 引用本文： | 谭玉茹,苏建徽.一种新型模块化多电平换流器调制策略研究[J].电气传动,2012,42(3):27-30. |
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| 作者姓名： | 谭玉茹 苏建徽 |
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| 作者单位： | 合肥工业大学教育部光伏系统工程研究中心,安徽合肥,230009 |
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| 摘 要： | 介绍了适用于轻型直流输电系统(VSC-HVDC)的模块化多电平换流器(MMC)拓扑结构及原理,并提出一种适用于MMC的新型移相载波调制策略(CPS-SPWM)。基于MMC的能量均衡和电压平衡问题,还提出了和调制策略相协调的电容电压均衡控制方法,最后通过Matlab/Simulink搭建了MMC仿真模型,结果证明所提出的控制方法可以有效地平衡换流器子模块的电容电压,并且保证MMC外部输出良好的交流电压和电流。
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| 关 键 词： | 模块化多电平换流器 高压直流输电 电容电压均衡 移相载波PWM调制策略 |
Novel Modulation Scheme Research of Modular Multilevel Converter |
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| TAN Yu-ru
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SU Jian-hui.Novel Modulation Scheme Research of Modular Multilevel Converter[J].Electric Drive,2012,42(3):27-30. |
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| Authors: | TAN Yu-ru SU Jian-hui |
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| Affiliation: | (Research Center for Photovoltaic System Engineering Ministry of Education, Hefei University of Technology,Hefei 230009,Anhui,China) |
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| Abstract: | The principle and topology of modular multilevel converter(MMC) were proposed,which is a new multilevel converter suitable for VSC-HVDC.A novel carried phase shifted sinusoidal pulse width modulation(CPS-SPWM) scheme suitable for MMC in VSC-HVDC was presented.Based on the energy equipartition and voltage balance,a capacitor voltage-balancing strategy was presented with the topology of MMC and modulation.Simulation results based on Matlab/Simulink show that the control method can balance the capacitance voltage of submodule.It is also shown that it can ensure good AC voltage and current of MMC. |
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| Keywords: | modular multilevel converter high voltage direct current transmission capacitance voltage balancing carrier phase-shifted sinusoidal pulse width modulation technique |
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