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Analytical evaluation of output current ripple amplitude in three-phase three-level inverters.

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Title: Analytical evaluation of output current ripple amplitude in three-phase three-level inverters.
Authors: Grandi, Gabriele1 gabriele.grandi@unibo.it, Loncarski, Jelena2, Dordevic, Obrad3
Source: IET Power Electronics (Wiley-Blackwell). 2014, Vol. 7 Issue 9, p2258-2268. 11p. 2 Diagrams, 2 Charts, 9 Graphs.
Subjects: Electric currents, Ripple (Computer network protocol), Electromagnetic interference, Pulse width modulation inverters, Direct currents
Abstract: Nowadays, three-phase multilevel inverters are widely employed in medium and high-power applications, increasing the power ratings, improving the output voltage quality and reducing the conducted electromagnetic interferences. Despite of numerous pulse-width modulation (PWM) techniques have been developed for multilevel inverters, a detailed analysis of the output current ripple amplitude has not been reported yet. In this study, the peak-to-peak current ripple distribution over a fundamental period is analysed in details specifically for three-level three-phase voltage source inverters for both motor-load and grid-connected applications. In particular, the peak-to-peak amplitude of the current ripple is determined analytically as a function of the modulation index. The centred PWM strategy is considered in all the developments, implemented either by carrier-based or space vector (SV) PWM methods. With this modulation, the dc bus utilisation is maximised in a simple and effective way, and a nearly-optimal behaviour is obtained to minimise the current ripple rms. The results obtained in different cases and sub-cases identified in the proposed analytical approach are verified by experimental tests with reference to threephase three-level neutral-point clamped configuration. [ABSTRACT FROM AUTHOR]
Copyright of IET Power Electronics (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 98422469
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PubTypeId: academicJournal
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  Label: Title
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  Data: Analytical evaluation of output current ripple amplitude in three-phase three-level inverters.
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  Data: <searchLink fieldCode="AR" term="%22Grandi%2C+Gabriele%22">Grandi, Gabriele</searchLink><relatesTo>1</relatesTo><i> gabriele.grandi@unibo.it</i><br /><searchLink fieldCode="AR" term="%22Loncarski%2C+Jelena%22">Loncarski, Jelena</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Dordevic%2C+Obrad%22">Dordevic, Obrad</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22IET+Power+Electronics+%28Wiley-Blackwell%29%22">IET Power Electronics (Wiley-Blackwell)</searchLink>. 2014, Vol. 7 Issue 9, p2258-2268. 11p. 2 Diagrams, 2 Charts, 9 Graphs.
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  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Electric+currents%22">Electric currents</searchLink><br /><searchLink fieldCode="DE" term="%22Ripple+%28Computer+network+protocol%29%22">Ripple (Computer network protocol)</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+interference%22">Electromagnetic interference</searchLink><br /><searchLink fieldCode="DE" term="%22Pulse+width+modulation+inverters%22">Pulse width modulation inverters</searchLink><br /><searchLink fieldCode="DE" term="%22Direct+currents%22">Direct currents</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Nowadays, three-phase multilevel inverters are widely employed in medium and high-power applications, increasing the power ratings, improving the output voltage quality and reducing the conducted electromagnetic interferences. Despite of numerous pulse-width modulation (PWM) techniques have been developed for multilevel inverters, a detailed analysis of the output current ripple amplitude has not been reported yet. In this study, the peak-to-peak current ripple distribution over a fundamental period is analysed in details specifically for three-level three-phase voltage source inverters for both motor-load and grid-connected applications. In particular, the peak-to-peak amplitude of the current ripple is determined analytically as a function of the modulation index. The centred PWM strategy is considered in all the developments, implemented either by carrier-based or space vector (SV) PWM methods. With this modulation, the dc bus utilisation is maximised in a simple and effective way, and a nearly-optimal behaviour is obtained to minimise the current ripple rms. The results obtained in different cases and sub-cases identified in the proposed analytical approach are verified by experimental tests with reference to threephase three-level neutral-point clamped configuration. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IET Power Electronics (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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    Identifiers:
      – Type: doi
        Value: 10.1049/iet-pel.2013.0837
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 2258
    Subjects:
      – SubjectFull: Electric currents
        Type: general
      – SubjectFull: Ripple (Computer network protocol)
        Type: general
      – SubjectFull: Electromagnetic interference
        Type: general
      – SubjectFull: Pulse width modulation inverters
        Type: general
      – SubjectFull: Direct currents
        Type: general
    Titles:
      – TitleFull: Analytical evaluation of output current ripple amplitude in three-phase three-level inverters.
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            NameFull: Grandi, Gabriele
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            NameFull: Loncarski, Jelena
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            NameFull: Dordevic, Obrad
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            – D: 01
              M: 09
              Text: 2014
              Type: published
              Y: 2014
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              Value: 7
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              Value: 9
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            – TitleFull: IET Power Electronics (Wiley-Blackwell)
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