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电网技术  2015 

基于模块化多电平的铁路功率调节器直接功率控制策略

DOI: 10.13335/j.1000-3673.pst.2015.09.021, PP. 2511-2518

Keywords: 铁路功率调节器,模块化多电平换流器,单相,V/v牵引变,负序

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Abstract:

为解决铁路供电负序问题,同时兼顾无功补偿与谐波治理,由2个单相模块化多电平换流器(modularmultilevelconverter,MMC)背靠背连接构造铁路功率调节器(MMC-RPC),并直接接入牵引网。较传统RPC而言,取消了降压变压器,提高了直流电压,减小了直流端电流。针对铁路供电,分析单相系统的电压与功率间的数学模型,设计了一种无需系统角频率和电感参数的直接功率控制策略(directpowercontrol,DPC)。以V/v牵引变为例,在Matlab/Simulink中搭建仿真模型,仿真结果验证了所提策略的有效性。

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