航空用WBG多电平变换器的电压和电流平衡控制

D. Tran, M. Nguyen
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引用次数: 0

摘要

飞电容多电平变换器的电压平衡是设计和使用飞电容多电平变换器的难点之一,特别是对于高开关频率的宽带隙半导体元件(SiC和GaN)。本文的目的是分析一种串并联多电平变换器在移相PWM (PS-PWM)下工作时的电压-电流平衡特性。在不同的暂态条件下,开环PS-PWM的自然平衡可能不够鲁棒和有效。因此,本文提出了一种采用电压电流平衡算法的闭环PS-PWM控制方法。此外,还给出了电压和电流闭环控制的P和PI控制器的计算。给出了一个三相七电平串并联变换器的仿真结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Voltage and current balancing control of WBG multilevel converters for aeronautic applications
Voltage balancing of flying capacitor multilevel converter (FCMC) is one of difficult criterion for the design and using FCMC, particularity with high switching frequency of Wide Band Gap semi-conductor component (SiC and GaN). The aim of this paper is to analyze the voltage-current balancing characteristic of a series-parallel multilevel converter when it is operated under Phase-Shifted PWM (PS-PWM). The natural balancing of open-loop PS-PWM may not be robust and efficiency to keep the converter stable under different transient conditions. Therefore, the paper proposes a closed-loop PS-PWM control method using a voltage and current balancing algorithm. Furthermore, calculations of P and PI controllers are presented for closed-loop control of voltage and current. Simulation results from a three-phase seven-level series-parallel converter are presented.
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