矫正开关函数提高AC-AC矩阵变换器的可靠性  

Novel Remedial Control Approach of Switching Function for Improving Reliability of AC-AC Matrix Converter

作　　者：赵葵银[1] 杨青[1] 唐勇奇[1] 

机构地区：[1]湖南工程学院,湖南湘潭411101

出　　处：《四川电力技术》2008年第2期60-61,81,共3页Sichuan Electric Power Technology

基　　金：湖南省教育厅资助项目(05C570)

摘　　要：提出一种矫正开关函数的容错控制技术,以降低AC-AC矩阵变换器断相时的故障发生率,提高变换器的可靠性。通过较详细的数学分析断相故障发生后,用合适的输入电压序列的对称与非对称模式矩阵的构建合成新的开关函数矩阵,进一步合成故障情况下所需的输出波形,使矩阵变换器在缺相时依然能继续运行。仿真与实验结果验证该容错方案的可行性。A novel remedial approach of switching function for the fault - tolerant control is presented to reduce open - phase failures occurring in AC - AC matrix converters and to improve the reliability of AC - AC converter. By detailed mathematics analyses, switching function matrices, containing symmetric and anti - symmetric mode matrices with appropriate sequences of input voltages, are developed to synthesize the redefined output waveforms under the faults, so AC- AC matrix converter can continue its operation. The simulation and experimental results show the feasibility of the fault - tolerant scheme.

关 键 词：容错算法 开关函数 AC—AC矩阵变换器 断相故障 可靠性 序列 

分 类 号：TM762[电气工程—电力系统及自动化] TP277[自动化与计算机技术—检测技术与自动化装置]