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双级矩阵变换器输入功率因数可调的载波调制策略

DOI: 10.13334/j.0258-8013.pcsee.2015.01.022, PP. 177-184

Keywords: 双级矩阵变换器,载波调制,功率因数调节

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Abstract:

载波调制方法的出现简化了双级矩阵变换器的控制,使用传统载波调制方法时在高调制区时会产生窄脉冲,且设定输入功率因数角较大时会有安全隐患。先对传统载波调制方法的窄脉冲现象进行研究,通过对调制函数的修正一定程度上避免了窄脉冲的产生,并在此基础上解决输入功率因数角较大时直流母线可能出现负压的问题,从而输入功率因数角不再受传统调制方法下有关调节范围的限制。实验结果证明了所提方案的正确性及可行性。

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