Multicarrier PWM with DC-link ripple feedforward compensation for multilevel inverters

被引：160

作者：

Kouro, Samir ^{[1
]}

Lezana, Pablo ^{[1
]}

Angulo, Mauricio ^{[1
]}

Rodriguez, Jose ^{[1
]}

机构：

[1] Univ Tecn Federico Santa Maria, Dept Elect Engn, Valparaiso, Chile

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2008年 / 23卷 / 01期

关键词：

DC-link ripple; feedforward; multicarrier PWM; multilevel inverters;

D O I：

10.1109/TPEL.2007.911834

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

Like most power converter topologies, multilevel inverters are controlled with modulation techniques that are conceptually based on nonlinear waveform synthesis assuming constant dc-link voltages. However, real applications have load and supply dependent dc-links that usually present important low frequency ripple, which is also modulated and transmitted to the load, generating undesirable low frequency voltage and current distortion. This paper introduces a simple but effective dc-link ripple feed-forward strategy into traditional carrier-based modulation techniques. The dc-link ripples are measured and used to modify the carriers or the reference directly in the modulation stage. Simulation and experimental results show the accuracy of the proposed method, eliminating low order harmonics in the load current.

引用

页码：52 / 59

页数：8

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