Analytical Expression for Line Voltage THD of Three-Phase Staircase Modulated Multilevel Inverters

被引:1
作者
Barbie, Eli [1 ,2 ]
Baimel, Dmitry [1 ]
Kuperman, Alon [2 ]
机构
[1] Shamoon Coll Engn, Dept Elect & Elect Engn, IL-8410802 Beer Sheva, Israel
[2] Ben Gurion Univ Negev, Sch Elect & Comp Engn, IL-8410501 Beer Sheva, Israel
关键词
multilevel inverters; staircase modulation; THD; optimization; line-voltage; TOTAL HARMONIC DISTORTION;
D O I
10.3390/electronics11030364
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this article, a simple closed-form analytical expression for the line-voltage total harmonic distortion (LTHD) of three-phase staircase-modulated (SCM) multilevel inverters (MLI) is proposed. The revealed expression is valid for any conventional MLI topology with arbitrary number and parity of voltage levels. The proposed formulation is presented as an analytic function of the number of voltage levels (N) and the phase switching angles (PSA); thus, it is suited to MLIs of equal voltage source supply and of any topology. This function may be employed for accurate LTHD calculation and optimization. The results are verified against LTHD calculations and optimizations, obtained numerically from previous works. Both processor in loop (PIL)- and controller + hardware in loop (C-HIL)-based real-time experimental validations are included as well. A downloadable file containing the Maple and MATLAB functions of the proposed expression are also provided.
引用
收藏
页数:15
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