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首页> 外文会议>2013 International Conference on Circuits, Power and Computing Technologies >Comparative study on various bipolar hybrid carrier PWM strategies for three phase five level cascaded inverter
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Comparative study on various bipolar hybrid carrier PWM strategies for three phase five level cascaded inverter

机译：三相五电平级联逆变器各种双极性混合载波PWM策略的比较研究

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摘要

This work presents the comparison of hybrid carrier Pulse Width Modulation (PWM) techniques for the chosen three phase Cascaded Multi Level Inverter (CMLI). In this paper, a CMLI is controlled with Sinusoidal PWM technique with Alternative Phase Opposition and Disposition and Carrier Overlapping (APOD + CO), Alternative Phase Opposition and Disposition and Phase Shift (APOD + PS), Alternative Phase Opposition and Disposition and Variable Frequency (APOD + VF), CO + VF, CO + PS, Phase Disposition and Variable Frequency (PD + VF), PS + PD, PS + VF , APOD + PD and CO + PD and the variation of Total Harmonic Distortion (THD) in the outputs is observed for various modulation indices ma. Simulation is performed using MATLAB-SIMULINK. It is seen that sinusoidal reference with PS+PD provides output with relatively low distortion. CO+VF PWM strategy is found to perform better since it provides relatively higher fundamental RMS output voltage and relatively lower stress on the devices.
机译：这项工作介绍了针对所选的三相级联多电平逆变器（CMLI）的混合载波脉冲宽度调制（PWM）技术的比较。本文采用正弦PWM技术控制CMLI，该技术具有相移和相移与载波重叠（APOD + CO），相移和相移与相移（APOD + PS），相移和相移以及可变频率（ APOD + VF），CO + VF，CO + PS，相位和可变频率（PD + VF），PS + PD，PS + VF，APOD + PD和CO + PD以及总谐波失真（THD）的变化观察到各种调制指数m a 的输出。使用MATLAB-SIMULINK进行仿真。可以看出，采用PS + PD的正弦基准电压提供了相对较低失真的输出。发现CO + VF PWM策略性能更好，因为它提供了相对较高的基本RMS输出电压和相对较低的器件应力。

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