宋平岗;周振邦;董辉;

• 1:华东交通大学电气与自动化工程学院

摘要(Abstract)：

针对牵引供电系统中存在的电能质量差、系统惯性小、短路比低等问题,模仿同步电机的工作特性提出了一种与虚拟惯性相结合的功率同步控制策略。对采用模块化多电平换流器结构的铁路功率调节器(modular multilevel converterrailway static power conditioner,MMC-RPC)使用该控制策略,能使MMC-RPC具有类似于同步电机转子的惯性,可为牵引网提供惯性支撑,提高其抗扰动能力;同时无锁相环(phase locked loop,PLL)的控制器设计规避了弱交流系统对传统锁相环的影响,提高了MMC的稳定性。建立了小信号数学模型,与矢量控制、直接功率控制的MMC-RPC进行仿真对比,所得出的控制性能与治理效果验证了上述控制策略的有效性与优越性。

关键词(KeyWords)： 模块化多电平换流器;铁路功率调节器;虚拟惯性;功率同步控制;小信号模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51367008)~~

作者(Author): 宋平岗;周振邦;董辉;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.0563

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