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Sinusoidal Pulse-width Modulated Three-phase Multi-level Inverter Topology

机译：正弦脉宽调制三相多电平逆变器拓扑

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摘要

This article presents a sinusoidal pulse-width modulated three-phase multi-level inverter topology. In this configuration, the basic two-level, three-phase inverter is modified to synthesize higher voltage levels by the insertion of two auxiliary switches per phase leg. The multi-level inverter configuration generates output voltage levels similar to the corresponding well-known conventional diode-clamped flying capacitors and cascaded H-bridge inverters but with fewer power circuit components and more simplicity. For output voltage and frequency variations demanded by such applications as variable-speed drives, active power filters, photovoltaic power conversions, etc., the sinusoidal pulse-width modulation technique is employed in the generation of the gating signals for the proposed three-phase multi-level inverter. A balanced three-phase R-L load is applied at the inverter output terminals, and the inverter performance is compared with that of other sinusoidal pulse-width modulated conventional multi-level inverter configurations. The validity of the proposed multi-level inverter topology and the modulation scheme are verified through simulations and experiments.
机译：本文提出了一种正弦脉冲宽度调制的三相多电平逆变器拓扑。在此配置中，基本的两电平三相逆变器经过修改，可以通过在每个相脚插入两个辅助开关来合成更高的电压电平。多电平逆变器配置产生的输出电压电平类似于相应的众所周知的常规二极管钳位飞跨电容器和级联H桥逆变器，但具有更少的电源电路组件和更简单的设计。对于诸如变速驱动器，有源功率滤波器，光伏功率转换等应用所要求的输出电压和频率变化，正弦脉冲宽度调制技术用于提出的三相多相门控信号的生成中级逆变器。平衡的三相R-L负载施加在逆变器输出端子上，并将逆变器性能与其他正弦脉冲宽度调制的常规多电平逆变器配置进行比较。通过仿真和实验验证了所提出的多电平逆变器拓扑和调制方案的有效性。

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