An integrated converter and machine control system for MMC-based high power drives
The Modular Multilevel Converter (MMC) is a promising topology for high power drive applications. However, large voltage fluctuations are produced in the floating capacitors when the machine is operating with high stator currents at low rotational speed. To compensate these oscillations, relatively...
| Main Authors: | , , , , , , |
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| Format: | Article |
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Institute of Electrical and Electronics Engineers
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50284/ |
| _version_ | 1848798209088946176 |
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| author | Espinoza, Mauricio Cardenas, Roberto Clare, Jon C. Soto-Sanchez, Diego Diaz, Matias Espina, Enrique Hackl, Christoph |
| author_facet | Espinoza, Mauricio Cardenas, Roberto Clare, Jon C. Soto-Sanchez, Diego Diaz, Matias Espina, Enrique Hackl, Christoph |
| author_sort | Espinoza, Mauricio |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The Modular Multilevel Converter (MMC) is a promising topology for high power drive applications. However, large voltage fluctuations are produced in the floating capacitors when the machine is operating with high stator currents at low rotational speed. To compensate these oscillations, relatively large mitigation currents are required to keep the capacitor voltages within an acceptable range.
In this paper, a new integrated control scheme is discussed to regulate the voltage fluctuations. The strategy is based on closed-loop vector-control of the voltage fluctuations, maintaining them inside a pre-defined threshold. The proposed control system is also augmented using flux weakening operation of the machine at low rotational speeds. An experimental prototype composed of eighteen power cells, feeding a vector-controlled induction machine in the whole speed range, is used to validate the effectiveness and feasibility of the proposed control strategies. |
| first_indexed | 2025-11-14T20:16:08Z |
| format | Article |
| id | nottingham-50284 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:16:08Z |
| publishDate | 2018 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-502842020-05-04T19:30:55Z https://eprints.nottingham.ac.uk/50284/ An integrated converter and machine control system for MMC-based high power drives Espinoza, Mauricio Cardenas, Roberto Clare, Jon C. Soto-Sanchez, Diego Diaz, Matias Espina, Enrique Hackl, Christoph The Modular Multilevel Converter (MMC) is a promising topology for high power drive applications. However, large voltage fluctuations are produced in the floating capacitors when the machine is operating with high stator currents at low rotational speed. To compensate these oscillations, relatively large mitigation currents are required to keep the capacitor voltages within an acceptable range. In this paper, a new integrated control scheme is discussed to regulate the voltage fluctuations. The strategy is based on closed-loop vector-control of the voltage fluctuations, maintaining them inside a pre-defined threshold. The proposed control system is also augmented using flux weakening operation of the machine at low rotational speeds. An experimental prototype composed of eighteen power cells, feeding a vector-controlled induction machine in the whole speed range, is used to validate the effectiveness and feasibility of the proposed control strategies. Institute of Electrical and Electronics Engineers 2018-02-05 Article PeerReviewed Espinoza, Mauricio, Cardenas, Roberto, Clare, Jon C., Soto-Sanchez, Diego, Diaz, Matias, Espina, Enrique and Hackl, Christoph (2018) An integrated converter and machine control system for MMC-based high power drives. IEEE Transactions on Industrial Electronics . ISSN 1557-9948 Modular Multilevel Converter variable speed drive voltage balancing flux-weakening operation http://ieeexplore.ieee.org/document/8281073/ doi:10.1109/TIE.2018.2801839 doi:10.1109/TIE.2018.2801839 |
| spellingShingle | Modular Multilevel Converter variable speed drive voltage balancing flux-weakening operation Espinoza, Mauricio Cardenas, Roberto Clare, Jon C. Soto-Sanchez, Diego Diaz, Matias Espina, Enrique Hackl, Christoph An integrated converter and machine control system for MMC-based high power drives |
| title | An integrated converter and machine control system for MMC-based high power drives |
| title_full | An integrated converter and machine control system for MMC-based high power drives |
| title_fullStr | An integrated converter and machine control system for MMC-based high power drives |
| title_full_unstemmed | An integrated converter and machine control system for MMC-based high power drives |
| title_short | An integrated converter and machine control system for MMC-based high power drives |
| title_sort | integrated converter and machine control system for mmc-based high power drives |
| topic | Modular Multilevel Converter variable speed drive voltage balancing flux-weakening operation |
| url | https://eprints.nottingham.ac.uk/50284/ https://eprints.nottingham.ac.uk/50284/ https://eprints.nottingham.ac.uk/50284/ |