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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >A novel submodule capacitor voltage balancing scheme for hybrid cascaded multilevel converter by injection of zero sequence current
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A novel submodule capacitor voltage balancing scheme for hybrid cascaded multilevel converter by injection of zero sequence current

机译：注入零序电流的新型混合级联多电平变换器子模块电容器电压平衡方案

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Multilevel converters with fault tolerant capability are getting increased importance in the HVDC systems. This paper describes the working principle and submodule capacitor voltage balancing issues of the Hybrid Cascaded Multilevel converter (HCMC). The converter involves lesser number of sub-modules and provides excellent DC side fault tolerant capability in an HVDC system. The paper analyzes the submodule capacitor voltage balancing issues associated with this converter. A novel submodule capacitor voltage balancing scheme for the HCMC by the injection of zero sequence current is proposed in this paper. The efficacy of the proposed scheme is verified with the help of simulation study done in PSCAD/EMTDC.
机译：具有容错能力的多电平转换器在高压直流输电系统中正变得越来越重要。本文介绍了混合级联多电平转换器（HCMC）的工作原理和子模块电容器电压平衡问题。该转换器涉及较少数量的子模块，并在HVDC系统中提供了出色的DC侧容错能力。本文分析了与该转换器相关的子模块电容器电压平衡问题。提出了一种通过零序电流注入的HCMC子模块电容器电压平衡方案。借助PSCAD / EMTDC中进行的仿真研究，验证了所提方案的有效性。

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