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Simplified space vector modulation technique for seven-level cascaded H-bridge inverter

机译:七级串联H桥逆变器的简化空间矢量调制技术

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摘要

A simplified space vector modulation (SVM) technique is proposed for the seven-level cascaded H-bridge (CHB) inverter. It is based on decomposing the seven-level space vector hexagon into a number of two-level space vector hexagons. The presented technique significantly reduces the calculation time and efforts involved in the SVM of a seven-level inverter; without any loss in the output voltage magnitude or increase in the total harmonic distortion content. A further simplified technique is also presented in this study, which significantly reduces the complexity and effort involved in the seven-level SVM. Simulation results for the seven-level CHB inverter using the proposed techniques are presented. The results are compared with results using sinusoidal pulse-width modulation (PWM) and third harmonic injection PWM to prove the validity of the proposed techniques. The proposed technique is perfectly general and can be applied to all types of multilevel inverters and extended to higher level inverters.
机译:提出了一种针对七级级联H桥(CHB)逆变器的简化空间矢量调制(SVM)技术。它基于将七级空间矢量六边形分解为许多两级空间矢量六边形。所提出的技术大大减少了七电平逆变器的支持向量机的计算时间和工作量;不会造成输出电压幅值的任何损失或总谐波失真含量的增加。这项研究中还提出了进一步简化的技术,该技术大大降低了七级SVM涉及的复杂性和工作量。提出了使用该技术的七电平CHB逆变器的仿真结果。将结果与使用正弦脉冲宽度调制(PWM)和三次谐波注入PWM的结果进行比较,以证明所提出技术的有效性。所提出的技术是完全通用的,并且可以应用于所有类型的多电平逆变器,并且可以扩展到更高级别的逆变器。

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    《Power Electronics, IET》 |2014年第3期|604-613|共10页
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