Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories
In power electronics, the modular multilevel converter (MMC) is an easily scalable topology with an high output voltage quality. It is suitable for the transmission of large amounts of electrical power over long distances, which supports the realization of the ongoing energy transition. State-of-the...
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| Format: | Article |
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IEEE
2021-01-01
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| Series: | IEEE Open Journal of Power Electronics |
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| Online Access: | https://ieeexplore.ieee.org/document/9376609/ |
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| author | Dennis Braeckle Patrick Himmelmann Lutz Groll Veit Hagenmeyer Marc Hiller |
| author_facet | Dennis Braeckle Patrick Himmelmann Lutz Groll Veit Hagenmeyer Marc Hiller |
| author_sort | Dennis Braeckle |
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| description | In power electronics, the modular multilevel converter (MMC) is an easily scalable topology with an high output voltage quality. It is suitable for the transmission of large amounts of electrical power over long distances, which supports the realization of the ongoing energy transition. State-of-the-art methods require a comparatively large total cell capacitance in the system for energy pulsations during operation. In the present paper, in order to minimize this total capacitance, first a new method is developed to model the system, and second, by help of this model, optimal current trajectories are calculated. These currents are used for control to reduce the energy pulsation over the complete operating range, and thus, to better utilize the hardware. The new method independent on the Clarke transformations is implemented on a laboratory scale setup, and measurement results are presented which validate the new method. Furthermore, the new method is compared to the state-of-the-art method of the compensation of the 2nd harmonic and outperforms the latter significantly. This applies to the entire operating range for different power factors. A total reduction of up to 44% of the energy pulsations is achieved. |
| format | Article |
| id | doaj-art-c442e3648ed74cd0968f217904b3ff68 |
| institution | Kabale University |
| issn | 2644-1314 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj-art-c442e3648ed74cd0968f217904b3ff682025-01-16T00:02:25ZengIEEEIEEE Open Journal of Power Electronics2644-13142021-01-01217118610.1109/OJPEL.2021.30651159376609Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current TrajectoriesDennis Braeckle0https://orcid.org/0000-0003-4145-153XPatrick Himmelmann1https://orcid.org/0000-0002-4165-6773Lutz Groll2https://orcid.org/0000-0003-3433-1425Veit Hagenmeyer3https://orcid.org/0000-0002-3572-9083Marc Hiller4https://orcid.org/0000-0002-0196-9644Institute of Electrical Engineering – Karlsruhe Institute of Technology, Karslruhe, GermanyInstitute of Electrical Engineering – Karlsruhe Institute of Technology, Karslruhe, GermanyInstitute for Automation and Applied Informatics – Karlsruhe Institute of Technology, Karslruhe, GermanyInstitute for Automation and Applied Informatics – Karlsruhe Institute of Technology, Karslruhe, GermanyInstitute of Electrical Engineering – Karlsruhe Institute of Technology, Karslruhe, GermanyIn power electronics, the modular multilevel converter (MMC) is an easily scalable topology with an high output voltage quality. It is suitable for the transmission of large amounts of electrical power over long distances, which supports the realization of the ongoing energy transition. State-of-the-art methods require a comparatively large total cell capacitance in the system for energy pulsations during operation. In the present paper, in order to minimize this total capacitance, first a new method is developed to model the system, and second, by help of this model, optimal current trajectories are calculated. These currents are used for control to reduce the energy pulsation over the complete operating range, and thus, to better utilize the hardware. The new method independent on the Clarke transformations is implemented on a laboratory scale setup, and measurement results are presented which validate the new method. Furthermore, the new method is compared to the state-of-the-art method of the compensation of the 2nd harmonic and outperforms the latter significantly. This applies to the entire operating range for different power factors. A total reduction of up to 44% of the energy pulsations is achieved.https://ieeexplore.ieee.org/document/9376609/Control systemmodular multilevel converters (MMC)optimal controlsystems modelingtrajectory optimization |
| spellingShingle | Dennis Braeckle Patrick Himmelmann Lutz Groll Veit Hagenmeyer Marc Hiller Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories IEEE Open Journal of Power Electronics Control system modular multilevel converters (MMC) optimal control systems modeling trajectory optimization |
| title | Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories |
| title_full | Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories |
| title_fullStr | Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories |
| title_full_unstemmed | Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories |
| title_short | Energy Pulsation Reduction in Modular Multilevel Converters Using Optimized Current Trajectories |
| title_sort | energy pulsation reduction in modular multilevel converters using optimized current trajectories |
| topic | Control system modular multilevel converters (MMC) optimal control systems modeling trajectory optimization |
| url | https://ieeexplore.ieee.org/document/9376609/ |
| work_keys_str_mv | AT dennisbraeckle energypulsationreductioninmodularmultilevelconvertersusingoptimizedcurrenttrajectories AT patrickhimmelmann energypulsationreductioninmodularmultilevelconvertersusingoptimizedcurrenttrajectories AT lutzgroll energypulsationreductioninmodularmultilevelconvertersusingoptimizedcurrenttrajectories AT veithagenmeyer energypulsationreductioninmodularmultilevelconvertersusingoptimizedcurrenttrajectories AT marchiller energypulsationreductioninmodularmultilevelconvertersusingoptimizedcurrenttrajectories |