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电网技术  2014 

一种改进的MMC换流阀运行试验装置及其控制策略

DOI: 10.13335/j.1000-3673.pst.2014.09.046, PP. 2611-2616

Keywords: MMC换流阀,运行试验,改进电路拓扑,控制策略,PSCAD/EMTDC

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Abstract:

从降低试验装置成本的角度对相关文献提出的模块化多电平换流器(modularmultilevelconverter,MMC)换流阀运行试验装置进行改进;根据改进拓扑阐述试验装置电流、电容电压控制原理,并设计电流闭环控制算法和考虑试验装置内部损耗的子模块电容电压闭环控制算法。PSCAD/EMTDC仿真结果表明所提试验电路及控制策略能等效模拟实际运行工况MMC各种电气应力,具有可行性。

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