模块化多电平换流器的容错控制策略

发布时间：2018-03-24 02:38

本文选题：模块化多电平换流器　切入点：热备用　出处：《电网技术》2014年09期

【摘要】：为了分析模块化多电平换流器在子模块故障时系统的运行性能,建立了系统在热备用的模式下上、下桥臂不对称运行的数学模型,分析结果表明上、下桥臂不对称运行会增加故障桥臂环流中的基频成分,通过改变故障桥臂子模块的平均开关频率可抑制基频环流。分析了采取容错控制策略后系统性能及所允许的最大故障子模块数量。PSCAD/EMTDC仿真结果验证了所得结论正确性。
[Abstract]:In order to analyze the system performance of the modularized multilevel converter in the fault of sub-module, a mathematical model for the asymmetric operation of the system in the hot standby mode and the lower axle arm is established. The analysis results show that, Asymmetric operation of the lower arm increases the fundamental frequency component in the fault arm circulation. By changing the average switching frequency of the fault bridge arm module, the fundamental frequency circulation can be restrained. The system performance and the maximum allowable number of fault submodules. PSCAD / EMTDC simulation results verify the correctness of the conclusions.
【作者单位】：中国石油大学(华东)信息与控制工程学院;
【基金】：山东省自然科学基金(ZR2010EM011)
【分类号】：TM46

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