An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives
Modular multilevel converters (M2C) are considered an attractive solution for high power drive applications. However, energy balancing within the converter is complex to achieve, particularly when the machine is operating at low rotational speeds. In this paper, a new control system, based on cascad...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Institute of Electrical and Electronics Engineers
2017
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/43937/ |
| _version_ | 1848796800724500480 |
|---|---|
| author | Espinoza, Mauricio Cardenas, Roberto Diaz, Matias Clare, Jon C. |
| author_facet | Espinoza, Mauricio Cardenas, Roberto Diaz, Matias Clare, Jon C. |
| author_sort | Espinoza, Mauricio |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Modular multilevel converters (M2C) are considered an attractive solution for high power drive applications. However, energy balancing within the converter is complex to achieve, particularly when the machine is operating at low rotational speeds. In this paper, a new control system, based on cascaded control loops and a vector-power-voltage (vPV) model of the M2C, is proposed. The control system is implemented in a dq-synchronous frame rotating at ωe rad/s with the external loop regulating the capacitor voltages using proportional-integral (PI) controllers. The internal loop controls the converter currents using PI and resonant controllers. In addition, the control systems required to operate the machine at other points, i.e., at medium and high rotational speeds, are also discussed in this paper. Experimental results obtained with an M2C-based drive laboratory prototype with 18 power cells are presented in this paper. |
| first_indexed | 2025-11-14T19:53:45Z |
| format | Article |
| id | nottingham-43937 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:53:45Z |
| publishDate | 2017 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-439372020-05-04T18:43:30Z https://eprints.nottingham.ac.uk/43937/ An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives Espinoza, Mauricio Cardenas, Roberto Diaz, Matias Clare, Jon C. Modular multilevel converters (M2C) are considered an attractive solution for high power drive applications. However, energy balancing within the converter is complex to achieve, particularly when the machine is operating at low rotational speeds. In this paper, a new control system, based on cascaded control loops and a vector-power-voltage (vPV) model of the M2C, is proposed. The control system is implemented in a dq-synchronous frame rotating at ωe rad/s with the external loop regulating the capacitor voltages using proportional-integral (PI) controllers. The internal loop controls the converter currents using PI and resonant controllers. In addition, the control systems required to operate the machine at other points, i.e., at medium and high rotational speeds, are also discussed in this paper. Experimental results obtained with an M2C-based drive laboratory prototype with 18 power cells are presented in this paper. Institute of Electrical and Electronics Engineers 2017-04-30 Article PeerReviewed Espinoza, Mauricio, Cardenas, Roberto, Diaz, Matias and Clare, Jon C. (2017) An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives. IEEE Transactions on Industrial Electronics, 64 (4). pp. 2620-2630. ISSN 1557-9948 Modular multilevel converter Variable speed drives Low-frequency operation Voltage balancing http://ieeexplore.ieee.org/document/7781663/ doi:10.1109/TIE.2016.2637894 doi:10.1109/TIE.2016.2637894 |
| spellingShingle | Modular multilevel converter Variable speed drives Low-frequency operation Voltage balancing Espinoza, Mauricio Cardenas, Roberto Diaz, Matias Clare, Jon C. An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title | An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title_full | An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title_fullStr | An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title_full_unstemmed | An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title_short | An enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| title_sort | enhanced dq-based vector control system for modular multilevel converters feeding variable speed drives |
| topic | Modular multilevel converter Variable speed drives Low-frequency operation Voltage balancing |
| url | https://eprints.nottingham.ac.uk/43937/ https://eprints.nottingham.ac.uk/43937/ https://eprints.nottingham.ac.uk/43937/ |