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Voltage and Current Analysis of Multi-step STATCOM Based on Three-Level Inverters

机译：基于三电平逆变器的多步STATCOM的电压和电流分析

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摘要

Assuming that STATCOM has no active power losses, the current and voltage analytical expressions of the three-level and dual three-point STATCOMs under the fundamental frequency modulation (FFM) control are presented by means of the theoretical analysis method. Meanwhile, the current and voltage waveforms of two STATCOMs are simulated with the help of Matlab/Simulink. The good agreement between theoretical analysis and simulation results verify that the proposed theoretical analysis method is valid and feasible, which can be extended to the analysis of similar power electronic circuits. The analytical and simulation results show at the same condition, the voltage and current harmonic contents of the dual three-level STATCOM can be effectively decreased compared with the three-level STATCOM, and the capacity of the dual three-level STATCOM can be increased.
机译：假设STATCOM没有有功功率损耗，通过理论分析方法，给出了在基频调制（FFM）控制下的三电平和双三点STATCOM的电流和电压解析表达式。同时，借助Matlab / Simulink模拟了两个STATCOM的电流和电压波形。理论分析与仿真结果吻合良好，证明了所提出的理论分析方法是正确可行的，可以推广到类似电力电子电路的分析中。分析和仿真结果表明，在相同条件下，与三电平STATCOM相比，双三电平STATCOM的电压和电流谐波含量可以有效降低，并且可以增加双三电平STATCOM的容量。

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