The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage
The modular multilevel converter (MMC) based on half-bridge modules is a power converter topology suitable for high-power medium-voltage variable-speed drives. However, the voltage of its flying capacitors is negatively affected when low frequencies appear at the AC port. This paper analyzes the inf...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/13/2791 |
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| author | Mauricio Espinoza Matias Diaz Enrique Espina Andrés Mora Arturo Letelier Felipe Donoso Roberto Cárdenas |
| author_facet | Mauricio Espinoza Matias Diaz Enrique Espina Andrés Mora Arturo Letelier Felipe Donoso Roberto Cárdenas |
| author_sort | Mauricio Espinoza |
| collection | DOAJ |
| description | The modular multilevel converter (MMC) based on half-bridge modules is a power converter topology suitable for high-power medium-voltage variable-speed drives. However, the voltage of its flying capacitors is negatively affected when low frequencies appear at the AC port. This paper analyzes the influence of using a variable DC port voltage in a machine-side MMC by implementing a closed-loop approach, ensuring a constant voltage fluctuation in the capacitors of the MMC during the whole operating range. The effectiveness of the proposed control scheme is demonstrated through simulation studies and experimental validation tests conducted using a 7.5 kW experimental prototype composed of an induction machine fed by an MMC with 18 half-bridge cells. |
| first_indexed | 2024-03-11T01:44:00Z |
| format | Article |
| id | doaj.art-6a0fd40943e9457fa3f54fb6e91118dc |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T01:44:00Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-6a0fd40943e9457fa3f54fb6e91118dc2023-11-18T16:23:29ZengMDPI AGElectronics2079-92922023-06-011213279110.3390/electronics12132791The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link VoltageMauricio Espinoza0Matias Diaz1Enrique Espina2Andrés Mora3Arturo Letelier4Felipe Donoso5Roberto Cárdenas6School of Electrical Engineering, Universidad de Costa Rica, San José 11501-2060, Costa RicaDepartment of Electrical Engineering, Universidad de Santiago de Chile, Avenida Ecuador 3519, Santiago 9170124, ChileDepartment of Electrical Engineering, Universidad de Santiago de Chile, Avenida Ecuador 3519, Santiago 9170124, ChileDepartment of Electrical Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso 234000, ChileDepartment of Electrical Engineering, Universidad de Chile, Santiago 8370451, ChileDepartment of Electrical Engineering, Universidad de Chile, Santiago 8370451, ChileDepartment of Electrical Engineering, Universidad de Chile, Santiago 8370451, ChileThe modular multilevel converter (MMC) based on half-bridge modules is a power converter topology suitable for high-power medium-voltage variable-speed drives. However, the voltage of its flying capacitors is negatively affected when low frequencies appear at the AC port. This paper analyzes the influence of using a variable DC port voltage in a machine-side MMC by implementing a closed-loop approach, ensuring a constant voltage fluctuation in the capacitors of the MMC during the whole operating range. The effectiveness of the proposed control scheme is demonstrated through simulation studies and experimental validation tests conducted using a 7.5 kW experimental prototype composed of an induction machine fed by an MMC with 18 half-bridge cells.https://www.mdpi.com/2079-9292/12/13/2791modular multilevel convertermachine drivedynamic modeling |
| spellingShingle | Mauricio Espinoza Matias Diaz Enrique Espina Andrés Mora Arturo Letelier Felipe Donoso Roberto Cárdenas The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage Electronics modular multilevel converter machine drive dynamic modeling |
| title | The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage |
| title_full | The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage |
| title_fullStr | The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage |
| title_full_unstemmed | The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage |
| title_short | The Closed-Loop Control of the Half-Bridge-Based MMC Drive with Variable DC-Link Voltage |
| title_sort | closed loop control of the half bridge based mmc drive with variable dc link voltage |
| topic | modular multilevel converter machine drive dynamic modeling |
| url | https://www.mdpi.com/2079-9292/12/13/2791 |
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