A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters

Multi-level converters are widely used in various industrial applications. Among various space vector modulation (SVM) schemes, the multi-level SVM scheme based on two-level space vector pulse width modulation (SVPWM) is recognised as a simplified multi-level SVM scheme, which can reduce the computa...

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Main Authors: Chen Wei, Xibo Yuan, Yonglei Zhang, Xiaojie Wu
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/13/9/2143
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author Chen Wei
Xibo Yuan
Yonglei Zhang
Xiaojie Wu
author_facet Chen Wei
Xibo Yuan
Yonglei Zhang
Xiaojie Wu
author_sort Chen Wei
collection DOAJ
description Multi-level converters are widely used in various industrial applications. Among various space vector modulation (SVM) schemes, the multi-level SVM scheme based on two-level space vector pulse width modulation (SVPWM) is recognised as a simplified multi-level SVM scheme, which can reduce the computation complexity. However, this scheme is still complicated when the number of the voltage levels is large. This paper proposes a modified SVM scheme that can further simplify the multi-level SVM scheme based on two-level SVPWM. The proposed SVM scheme can directly determine the two-level hexagon where the reference voltage vector is located by calculating a simple formula. The whole modulation process can be completed by only three steps. Meanwhile, the proposed method is generic for any <i>n</i>-level converter without adding much calculation, which greatly simplifies the modulation process. Experimental results have been provided, which verify the effectiveness and generality of the proposed SVM scheme for two types of multi-level converters.
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spelling doaj.art-841beb026a6b4cb29aff1ba083365d1e2023-11-19T23:09:30ZengMDPI AGEnergies1996-10732020-04-01139214310.3390/en13092143A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level ConvertersChen Wei0Xibo Yuan1Yonglei Zhang2Xiaojie Wu3School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaMulti-level converters are widely used in various industrial applications. Among various space vector modulation (SVM) schemes, the multi-level SVM scheme based on two-level space vector pulse width modulation (SVPWM) is recognised as a simplified multi-level SVM scheme, which can reduce the computation complexity. However, this scheme is still complicated when the number of the voltage levels is large. This paper proposes a modified SVM scheme that can further simplify the multi-level SVM scheme based on two-level SVPWM. The proposed SVM scheme can directly determine the two-level hexagon where the reference voltage vector is located by calculating a simple formula. The whole modulation process can be completed by only three steps. Meanwhile, the proposed method is generic for any <i>n</i>-level converter without adding much calculation, which greatly simplifies the modulation process. Experimental results have been provided, which verify the effectiveness and generality of the proposed SVM scheme for two types of multi-level converters.https://www.mdpi.com/1996-1073/13/9/2143generalized zero vectormulti-level converterspace vector modulationtwo-level hexagon
spellingShingle Chen Wei
Xibo Yuan
Yonglei Zhang
Xiaojie Wu
A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
Energies
generalized zero vector
multi-level converter
space vector modulation
two-level hexagon
title A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
title_full A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
title_fullStr A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
title_full_unstemmed A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
title_short A Generic Multi-Level SVM Scheme Based on Two-Level SVM for <i>n</i>-Level Converters
title_sort generic multi level svm scheme based on two level svm for i n i level converters
topic generalized zero vector
multi-level converter
space vector modulation
two-level hexagon
url https://www.mdpi.com/1996-1073/13/9/2143
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