SVPWM technique with varying DC-link voltage for common mode voltage reduction in an indirect matrix converter
SVPWM technique with varying DC-link voltage for common mode voltage reduction in an indirect matrix converter
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DOI：
10.1109/ecce.2015.7309780
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发表时间：
2015-10
期刊：
影响因子：
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通讯作者：
Varsha Padhee;A. Sahoo;N. Mohan
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文献类型：
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作者：
Varsha Padhee;A. Sahoo;N. Mohan
本文讨论了应用于间接矩阵转换器 (IMC) 的改进空间矢量技术，该技术可降低共模电压并具有其他高级功能。控制矩阵转换器的传统间接空间矢量脉宽调制（SVPWM）方法涉及使用两个相邻的有源矢量和一个零矢量来用于转换器的整流级和反相级。通过适当选择空间矢量，矩阵转换器的整流级可以生成不同电平的虚拟直流母线电压。可以利用此功能使转换器在不同的调制指数范围内针对不同的机器速度进行操作。与传统调制相比，这会降低共模电压并改善输出电压的谐波频谱，而不会增加开关转换的数量。该算法的有效性通过 MATLAB/Simulink 中的仿真以及实验室原型机上的实验得到了证实。
This paper discusses a modified space vector technique applied to an indirect matrix converter (IMC) which results in the reduction of common mode voltages and other advanced features. The conventional indirect space vector pulse-width modulation (SVPWM) method of controlling matrix converters involves the usage of two adjacent active vectors and one zero vector for both rectifying and inverting stages of the converter. By suitable selection of space vectors, the rectifying stage of the matrix converter can generate different levels of virtual DC-link voltage. This capability can be exploited for operation of the converter in different ranges of modulation indices for varying machine speeds. This results in lower common mode voltage and improves the harmonic spectrum of the output voltage, without increasing the number of switching transitions as compared to conventional modulation. The effectiveness of the algorithm is substantiated by simulations in MATLAB/Simulink and experiments on a laboratory prototype.