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
Roberto Cardenas email@example.com
Jon C. Clare firstname.lastname@example.org
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.
|Journal Article Type||Article|
|Journal||IEEE Transactions on Industrial Electronics|
|Publisher||Institute of Electrical and Electronics Engineers|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Espinoza, M., Cardenas, R., Clare, J. C., Soto-Sanchez, D., Diaz, M., Espina, E., & Hackl, C. (in press). An integrated converter and machine control system for MMC-based high power drives. IEEE Transactions on Industrial Electronics, doi:10.1109/TIE.2018.2801839|
|Keywords||Modular Multilevel Converter, variable
speed drive, voltage balancing, flux-weakening operation
|Copyright Statement||Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf|
|Additional Information||M. Espinoza et al., "An Integrated Converter and Machine Control System for MMC-Based High Power Drives," in IEEE Transactions on Industrial Electronics, vol. PP, no. 99, pp. 1-1. doi: 10.1109/TIE.2018.2801839
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An Integrated Converter and Machine Control System for MMC-Based High Power Drives.pdf
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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