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基于新型谐振控制器的辅助逆变器控制策略

, PP. 107-113

Keywords: 城市轨道交通,辅助变流器,中点电位偏移,不平衡负载,谐振控制器

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Abstract:

随着轨道交通在整个城市交通系统中的作用日益凸显,辅助逆变器的应用也越来越广。本文首先介绍辅助逆变器的几种常见结构,分析其各自优缺点。其次针对分裂电容式逆变器可能出现的中点电位偏移和不平衡负载问题,从本质上对其进行了探讨,提出了一种基于新型谐振控制器的解决方法并对这种控制器的特点和参数设计进行了详细分析。接着本文构建了基于S-Function的仿真模型,通过S-Function最大限度的模拟实际DSP系统的运算时序,验证控制策略的有效性。最后本文进行了中点电位偏移和不平衡负载实验,充分验证了新型谐振控制器在这两方面均具有优越的性能。

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