Comparative research of harmonic suppression algorithm of the three-level NPC converter
The three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter. There are many modulation strategies of the three-level NPC converter, among them, selective harmonic eliminat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-10-01
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| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8846 |
| _version_ | 1819182731276320768 |
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| author | Li Ning Gao Tong Zhang Hui Yang Ping |
| author_facet | Li Ning Gao Tong Zhang Hui Yang Ping |
| author_sort | Li Ning |
| collection | DOAJ |
| description | The three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter. There are many modulation strategies of the three-level NPC converter, among them, selective harmonic elimination PWM (SHEPWM) and selective harmonic mitigation PWM (SHMPWM) strategies are very useful technologies since they have the characteristics of low harmonics elimination or reduction. Nevertheless, the SHEPWM and the SHMPWM strategies have the disadvantages in solving non-linear transcendental equations. Here, non-linear transcendental equations solution of the SHEPWM and SHMPWM strategies are researched and compared. First, the homotopy algorithm is applied to the SHEPWM strategy. In the solution process, the initial value is obtained by the gravity centre coincidence method, and the numerical solution obtained by the homotopy algorithm is solved by the Newton iteration method to obtain the true solution. Second, the non-linear transcendental equations of the SHMPWM technique are established and optimised. Finally, simulation models of the three-level NPC converter using SPWM, SHEPWM, and SHMPWM strategies are built in MATLAB. The comparison and analysis of the three strategies are carried out to verify the effectiveness and superiority of SHEPWM and SHMPWM algorithms in harmonic suppression. |
| first_indexed | 2024-12-22T22:50:47Z |
| format | Article |
| id | doaj.art-bd5a2dce2eef418d9511b6f74330595f |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-22T22:50:47Z |
| publishDate | 2018-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-bd5a2dce2eef418d9511b6f74330595f2022-12-21T18:09:57ZengWileyThe Journal of Engineering2051-33052018-10-0110.1049/joe.2018.8846JOE.2018.8846Comparative research of harmonic suppression algorithm of the three-level NPC converterLi Ning0Gao Tong1Zhang Hui2Yang Ping3School of Automation and Information Engineering, Xi'an University of TechnologySchool of Automation and Information Engineering, Xi'an University of TechnologySchool of Automation and Information Engineering, Xi'an University of TechnologyGuangdong Key Laboratory of Clean Energy TechnologyThe three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter. There are many modulation strategies of the three-level NPC converter, among them, selective harmonic elimination PWM (SHEPWM) and selective harmonic mitigation PWM (SHMPWM) strategies are very useful technologies since they have the characteristics of low harmonics elimination or reduction. Nevertheless, the SHEPWM and the SHMPWM strategies have the disadvantages in solving non-linear transcendental equations. Here, non-linear transcendental equations solution of the SHEPWM and SHMPWM strategies are researched and compared. First, the homotopy algorithm is applied to the SHEPWM strategy. In the solution process, the initial value is obtained by the gravity centre coincidence method, and the numerical solution obtained by the homotopy algorithm is solved by the Newton iteration method to obtain the true solution. Second, the non-linear transcendental equations of the SHMPWM technique are established and optimised. Finally, simulation models of the three-level NPC converter using SPWM, SHEPWM, and SHMPWM strategies are built in MATLAB. The comparison and analysis of the three strategies are carried out to verify the effectiveness and superiority of SHEPWM and SHMPWM algorithms in harmonic suppression.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8846iterative methodspower electronicsPWM power convertorsharmonics suppressionNewton methodpulse width modulationPWM invertorsnonlinear equationsselective harmonic elimination pulse width modulationselective harmonic mitigation pulse width modulation strategiesSHMPWM strategiesnonlinear transcendental equations solutionSHEPWM strategythree-level NPC convertermodulation strategy |
| spellingShingle | Li Ning Gao Tong Zhang Hui Yang Ping Comparative research of harmonic suppression algorithm of the three-level NPC converter The Journal of Engineering iterative methods power electronics PWM power convertors harmonics suppression Newton method pulse width modulation PWM invertors nonlinear equations selective harmonic elimination pulse width modulation selective harmonic mitigation pulse width modulation strategies SHMPWM strategies nonlinear transcendental equations solution SHEPWM strategy three-level NPC converter modulation strategy |
| title | Comparative research of harmonic suppression algorithm of the three-level NPC converter |
| title_full | Comparative research of harmonic suppression algorithm of the three-level NPC converter |
| title_fullStr | Comparative research of harmonic suppression algorithm of the three-level NPC converter |
| title_full_unstemmed | Comparative research of harmonic suppression algorithm of the three-level NPC converter |
| title_short | Comparative research of harmonic suppression algorithm of the three-level NPC converter |
| title_sort | comparative research of harmonic suppression algorithm of the three level npc converter |
| topic | iterative methods power electronics PWM power convertors harmonics suppression Newton method pulse width modulation PWM invertors nonlinear equations selective harmonic elimination pulse width modulation selective harmonic mitigation pulse width modulation strategies SHMPWM strategies nonlinear transcendental equations solution SHEPWM strategy three-level NPC converter modulation strategy |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8846 |
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