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Intelligent Approach for Control Techniques Based on Complex Converter Structures.

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Title: Intelligent Approach for Control Techniques Based on Complex Converter Structures.
Authors: Kitmo1 (AUTHOR), Choudhury, Subhashree2 (AUTHOR), Khan, Akhlaque Ahmad3 (AUTHOR), Das, Sima4 (AUTHOR), Elnaggar, Mohamed F.5,6 (AUTHOR)
Source: International Journal of Energy Research. 12/12/2023, p1-13. 13p.
Subjects: Intelligent control systems, High voltages, Absolute value, Voltage control, Mathematical models, Pulse width modulation
Abstract: Hybrid frequency control strategies are used to eliminate the problem of current inversion in multilevel cascaded asymmetrical H-bridge inverters. Unfortunately, this technique results in unbalanced power at the inverter output. The improved hybrid PWM modulation strategy helps to regulate power balances within a reasonable range at high and low voltages, by adjusting the conduction angle of the cells in high frequencies. However, as the conduction angle of a high-voltage cell increases, the fundamental amplitude of the inverter output voltage decreases, since waveforms with absolute values greater than 2 E cannot be perfectly modulated. Based on mathematical models of the conduction time for each level synthesis method, a new modulation strategy is proposed to solve the problems associated with the two strategies mentioned above. This new high-frequency modulation strategy adopts a combination of pulse-width modulation (PWM) and step modulation to combine control of the high-voltage and low-voltage units. At given intervals, the control voltage signals of the low-voltage unit are exchanged. Finally, the power of each unit is balanced and the basic amplitude of the inverter output voltage is not affected. Finally, the MATLAB/Simulink simulation model and experimental platform verify the feasibility of this strategy. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Energy Research 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: 174293165
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Label: Title
  Group: Ti
  Data: Intelligent Approach for Control Techniques Based on Complex Converter Structures.
– Name: Author
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  Data: <searchLink fieldCode="AR" term="%22Kitmo%22">Kitmo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choudhury%2C+Subhashree%22">Choudhury, Subhashree</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khan%2C+Akhlaque+Ahmad%22">Khan, Akhlaque Ahmad</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Das%2C+Sima%22">Das, Sima</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Elnaggar%2C+Mohamed+F%2E%22">Elnaggar, Mohamed F.</searchLink><relatesTo>5,6</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Energy+Research%22">International Journal of Energy Research</searchLink>. 12/12/2023, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Intelligent+control+systems%22">Intelligent control systems</searchLink><br /><searchLink fieldCode="DE" term="%22High+voltages%22">High voltages</searchLink><br /><searchLink fieldCode="DE" term="%22Absolute+value%22">Absolute value</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage+control%22">Voltage control</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Pulse+width+modulation%22">Pulse width modulation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Hybrid frequency control strategies are used to eliminate the problem of current inversion in multilevel cascaded asymmetrical H-bridge inverters. Unfortunately, this technique results in unbalanced power at the inverter output. The improved hybrid PWM modulation strategy helps to regulate power balances within a reasonable range at high and low voltages, by adjusting the conduction angle of the cells in high frequencies. However, as the conduction angle of a high-voltage cell increases, the fundamental amplitude of the inverter output voltage decreases, since waveforms with absolute values greater than 2 E cannot be perfectly modulated. Based on mathematical models of the conduction time for each level synthesis method, a new modulation strategy is proposed to solve the problems associated with the two strategies mentioned above. This new high-frequency modulation strategy adopts a combination of pulse-width modulation (PWM) and step modulation to combine control of the high-voltage and low-voltage units. At given intervals, the control voltage signals of the low-voltage unit are exchanged. Finally, the power of each unit is balanced and the basic amplitude of the inverter output voltage is not affected. Finally, the MATLAB/Simulink simulation model and experimental platform verify the feasibility of this strategy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Energy Research 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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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1155/2023/6770322
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 1
    Subjects:
      – SubjectFull: Intelligent control systems
        Type: general
      – SubjectFull: High voltages
        Type: general
      – SubjectFull: Absolute value
        Type: general
      – SubjectFull: Voltage control
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Pulse width modulation
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      – TitleFull: Intelligent Approach for Control Techniques Based on Complex Converter Structures.
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            NameFull: Kitmo
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            NameFull: Choudhury, Subhashree
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            NameFull: Khan, Akhlaque Ahmad
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            NameFull: Das, Sima
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          Name:
            NameFull: Elnaggar, Mohamed F.
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            – D: 12
              M: 12
              Text: 12/12/2023
              Type: published
              Y: 2023
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            – TitleFull: International Journal of Energy Research
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