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电网技术  2009 

基于多级注入式电流源变换器的STATCOM建模与控制

, PP. 108-112

Keywords: 多级注入,电流源变换器(CSC),线性化模型,静止同步补偿器(STATCOM)

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Abstract:

介绍一种新型的多级注入式电流源变换器,这种变换器主桥实现了零电流切换,消除开关损耗的同时降低了对吸收回路的要求,简化了变换器与交流系统的连接,在换向期间网侧不需要大容量的交流电容。建立了基于多级注入式电流源变换器的STATCOM的数学模型,对STATCOM的非线性数学模型进行局部线性化。通过分析给出了控制策略框图,利用PSCAD/EMTDC对所建模型进行仿真,结果表明,该结构的STATCOM具有良好的动态、稳态特性,并验证了所提出控制策略的可行性。

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