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

Samir Kouro; Pablo Lezana; Mauricio Angulo; José Rodriguez

doi:10.1109/TPEL.2007.911834

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

Samir Kouro, Pablo Lezana, Mauricio Angulo, José Rodriguez

Engineering School

Research output: Contribution to journal › Article › peer-review

190 Citations (Scopus)

Abstract

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 feedforward 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.

Original language	English
Pages (from-to)	52-59
Number of pages	8
Journal	IEEE Transactions on Power Electronics
Volume	23
Issue number	1
DOIs	https://doi.org/10.1109/TPEL.2007.911834
Publication status	Published - Jan 2008

Keywords

DC-link ripple
Feedforward
Multicarrier PWM
Multilevel inverters

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TPEL.2007.911834

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abstract = "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 feedforward 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.",

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AU - Angulo, Mauricio

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Y1 - 2008/1

N2 - 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 feedforward 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.

AB - 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 feedforward 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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