A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters
Multiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulse-width modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable numb...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9376850/ |
| _version_ | 1818479348354646016 |
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| author | Charles Ikechukwu Odeh Arkadiusz Lewicki Marcin Morawiec |
| author_facet | Charles Ikechukwu Odeh Arkadiusz Lewicki Marcin Morawiec |
| author_sort | Charles Ikechukwu Odeh |
| collection | DOAJ |
| description | Multiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulse-width modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable number of output voltage levels from CHB MLI is needed, commensurate high number of carrier signals in either classical level- or phase-shifted SPWM scheme for this inverter is inevitable. High-quality output waveforms from CHB MLI system demands precise synchronization of these multi-carrier signals. Sampling issues, memory constraints and computational delays pose difficulties in achieving this synchronization for real-time digital implementation. This study presents a PWM template for CHB MLI. The developed control concept generates adequate modulation templates for CHB inverter wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. These templates can be used on CHB inverter of any level with no further control modification. Nearly even distribution of switching pulses, equal sharing of the overall real power among the constituting power switches and enhanced output voltage quality were achieved with the proposed modulation. For a 3-phase, 7-level CHB, simulation and experimental results, for an R-L load, were presented. |
| first_indexed | 2024-12-10T11:09:24Z |
| format | Article |
| id | doaj.art-1ff4b5e973fb4d42af01c86fd119f217 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-10T11:09:24Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1ff4b5e973fb4d42af01c86fd119f2172022-12-22T01:51:28ZengIEEEIEEE Access2169-35362021-01-019421824219110.1109/ACCESS.2021.30657439376850A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel InvertersCharles Ikechukwu Odeh0https://orcid.org/0000-0003-0704-5669Arkadiusz Lewicki1Marcin Morawiec2Department of Electrical Engineering, University of Nigeria, Nsukka, NigeriaFaculty of Electrical and Control Engineering, Gdańsk University of Technology, Gdańsk, PolandFaculty of Electrical and Control Engineering, Gdańsk University of Technology, Gdańsk, PolandMultiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulse-width modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable number of output voltage levels from CHB MLI is needed, commensurate high number of carrier signals in either classical level- or phase-shifted SPWM scheme for this inverter is inevitable. High-quality output waveforms from CHB MLI system demands precise synchronization of these multi-carrier signals. Sampling issues, memory constraints and computational delays pose difficulties in achieving this synchronization for real-time digital implementation. This study presents a PWM template for CHB MLI. The developed control concept generates adequate modulation templates for CHB inverter wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. These templates can be used on CHB inverter of any level with no further control modification. Nearly even distribution of switching pulses, equal sharing of the overall real power among the constituting power switches and enhanced output voltage quality were achieved with the proposed modulation. For a 3-phase, 7-level CHB, simulation and experimental results, for an R-L load, were presented.https://ieeexplore.ieee.org/document/9376850/Cascaded H-bridge invertersinusoidal pulse-width modulationtotal harmonic distortion |
| spellingShingle | Charles Ikechukwu Odeh Arkadiusz Lewicki Marcin Morawiec A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters IEEE Access Cascaded H-bridge inverter sinusoidal pulse-width modulation total harmonic distortion |
| title | A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters |
| title_full | A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters |
| title_fullStr | A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters |
| title_full_unstemmed | A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters |
| title_short | A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters |
| title_sort | single carrier based pulse width modulation template for cascaded h bridge multilevel inverters |
| topic | Cascaded H-bridge inverter sinusoidal pulse-width modulation total harmonic distortion |
| url | https://ieeexplore.ieee.org/document/9376850/ |
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