Three-dimensional space-vector modulation algorithm for four-leg multilevel converters using abc coordinates

Franquelo, Leopoldo G.; Prats, Ma.A.M.; Portillo, R.; Galván, José Ignacio León; Perales, Manuel; Carrasco, J.M.; Dı́ez, Elena; Jiménez, José Luis Mora

doi:10.1109/tie.2006.870884

Cited by 120 publications

(53 citation statements)

References 15 publications

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“…However such strategies do not allow selection of variable vector switching sequences to manipulate the harmonic spectrum or the distribution of the switching power losses, which are important in MV or grid connected applications. A three dimensional modulation approach for 4-leg three-level NPC converters has been proposed in [21], where the modulation is implemented directly in the abc coordinate frame. Although this method is simple, efficient and achieves full utilization of the dc-link voltage, it has some inherent limitations due to the use of the abc coordinate frame.…”

Section: Introductionmentioning

confidence: 99%

A New Space-Vector-Modulation Algorithm for a Three-Level Four-Leg NPC Inverter

Rojas

Kennel

Cárdenas

et al. 2017

IEEE Trans. Energy Convers.

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Abstract-For power conversion systems interfaced to 4-wire supplies, four-leg converters have become a standard solution. A four-leg converter allows good compensation of zero-sequence harmonics and full utilization of the dc-link voltage. These are very important features when unbalanced and/or non-linear loads are connected to the system. This paper proposes a 3D-SVM algorithm and provides a comprehensive analysis of the algorithm implemented on a three-level, four-leg NPC converter. The algorithm allows a simple definition of the different switching patterns and enables balancing of the dc-link capacitor voltages using the redundancies of the converter states. A resonant controller is selected as the control strategy to validate the proposed SVM algorithm in a 6kW experimental rig.

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Section: Introductionmentioning

confidence: 99%

A New Space-Vector-Modulation Algorithm for a Three-Level Four-Leg NPC Inverter

Rojas

Kennel

Cárdenas

et al. 2017

IEEE Trans. Energy Convers.

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“…A three-dimensional algorithm in abc coordinates have been proposed in [21]. This algorithm makes full utilization of the dc-link voltage and can modulate a reference vector with a simple and fast algorithm.…”

mentioning

confidence: 99%

A Simplified Space-Vector Modulation Algorithm for Four-Leg NPC Converters

Rojas

Cárdenas

Kennel

et al. 2017

IEEE Trans. Power Electron.

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Abstract-To interface generation sources and loads to fourwire distribution networks is important to use power converters and modulation methods which provide high performance, flexibility and reliability. To achieve these goals, this paper proposes a simple and efficient Space Vector Modulation (SVM) algorithm in αβγ coordinates for Neutral Point Clamped (NPC) converters. The proposed SVM method reduces a three-dimensional (αβγ) search of the modulating vectors into a simple two-dimensional (αβ) problem. Moreover, the algorithm provides full utilisation of the dc-link voltage, full utilisation of the redundant vectors and it can be applied to any other four-leg converter topology. The proposed SVM has been successfully validated using a 6kW three-level four-leg NPC converter, achieving control over the voltages of the dc-link capacitors and simple definition of switching pattern for shaping frequency spectrum.

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“…In the four-leg inverter, as the sum of the three-phase voltage is not equal to zero, a three-dimensional SVM (3DSVM) must be adopted. Currently, the conventional 3DSVM algorithm is mainly based on the abc coordinate system [24][25] or αβo coordinate system [26][27].…”

Section: -The Tuned Frequency Cannot Vary Under the Different Harmonmentioning

confidence: 99%

Backstepping control of three-phase three-level four-leg shunt active power filter

Badra¹,

Barkat²,

Bouzidi³

2017

J. Fundam and Appl Sci.

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In this paper, backstepping control for three-level four-leg shunt active power filter (SAPF) system is proposed. The adopted filtering topology requires both a three-dimensional space vector modulation (3DSVM) for controlling the three-level four-leg inverter as well as DC voltage and filter currents control. The regulation of the DC voltage and filter currents is accomplished by backstepping controllers. The voltage-balancing control of two split DC capacitors of the three-level four-leg SAPF is achieved using three-level three-dimensional space vector modulation equipped by a balancing strategy based on the effective use of the redundant switching states of the inverter voltage vectors. The simulation results show the effectiveness of the proposed filtering system in terms of the compensation of the harmonics and the zero sequence current and the operation at unity power factor.

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Three-dimensional space-vector modulation algorithm for four-leg multilevel converters using abc coordinates

Cited by 120 publications

References 15 publications

A New Space-Vector-Modulation Algorithm for a Three-Level Four-Leg NPC Inverter

A New Space-Vector-Modulation Algorithm for a Three-Level Four-Leg NPC Inverter

A Simplified Space-Vector Modulation Algorithm for Four-Leg NPC Converters

Backstepping control of three-phase three-level four-leg shunt active power filter

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