李金科;金新民;吴学智;武文;荆龙;尹靖元;

• 1:国家能源主动配电网技术研发中心
• 2:北京电动车辆协同创新中心
• 3:中国科学院电工研究所

摘要(Abstract)：

故障子模块的切除运行会使模块化多电平变换器系统输出不平衡。分析了故障运行期间,由于相与相之间模块的不对称投入,相间环流将明显增大,不及时处理易造成输出过流、子模块过压等的情况。针对无冗余模块的子模块故障问题,使用调制波重组方式的故障穿越策略后,证明了相桥臂间仍不对称运行。然后,通过理论推导故障期间以及调制波重组后的环流状态,证明奇次谐波明显增加,并设计了基于二阶广义积分器的多谐波提取控制器,通过准比例谐振调节器完成对环流的抑制。最终,通过Matlab仿真以及10 k W样机平台完成控制策略的验证。

关键词(KeyWords)： 模块化多电平变流器;环流;子模块故障;调制波重组;多谐波滤波器

Abstract:

Keywords:

基金项目(Foundation): 国家能源应用技术研究及工程示范项目(NY20150302)~~

作者(Author): 李金科;金新民;吴学智;武文;荆龙;尹靖元;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.01.005

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