Voltage balancing of a five-level flying capacitor converter using optimum switching transitions

Amer M.Y.M. Ghias; Josep Pou; Mihai Ciobotaru; Vassilios G. Agelidis

doi:10.1109/IECON.2012.6389568

Voltage balancing of a five-level flying capacitor converter using optimum switching transitions

Amer M.Y.M. Ghias
, Josep Pou
, Mihai Ciobotaru
, Vassilios G. Agelidis

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

9 Citations (Scopus)

Abstract

The flying capacitor (FC) multilevel converter requires a capacitor voltage balancing mechanism for proper operation. This paper proposes a voltage balancing scheme for a five-level FC converter based on phase disposition pulse-width modulation (PD-PWM) using transitions that produce the minimum number of switching events. This strategy will be called optimal-transition voltage balancing (OTVB) scheme. Since multiple optimum switching transitions between two consecutive voltage levels may be available, such a redundancy is used to regulate the FC voltages at their desired levels. Those transitions that produce more switching events are avoided. The rest of transitions are evaluated by means of a cost function and the one that produces the minimum value is selected. Simulation results show a significant reduction of the average switching frequency as compared to the use of the optimal-state voltage balancing (OSVB) scheme, while maintaining the balance of the FC voltages. Moreover, the proposed PD-PWM voltage balancing strategy is robust to static and dynamic load conditions. © 2012 IEEE.

Original language	English
Title of host publication	Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Pages	5006-5012
DOIs	https://doi.org/10.1109/IECON.2012.6389568
Publication status	Published - 2012
Externally published	Yes
Event	38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012 - Montreal, QC, Canada Duration: 25 Oct 2012 → 28 Oct 2012

Publication series

Name	IECON Proceedings (Industrial Electronics Conference)

Conference

Conference	38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012
Place	Canada
City	Montreal, QC
Period	25/10/12 → 28/10/12

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work has been partially supported by the University of New South Wales, Australia Energy Research Institute and the school of Electrical engineering and Telecommunications. It has also been partially supported by the Ministerio de Educaci6n of Spain under Fellowship Grant PR20 11-0541.

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10.1109/IECON.2012.6389568

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Ghias, A. M. Y. M., Pou, J., Ciobotaru, M., & Agelidis, V. G. (2012). Voltage balancing of a five-level flying capacitor converter using optimum switching transitions. In Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society (pp. 5006-5012). Article 6389568 (IECON Proceedings (Industrial Electronics Conference)). https://doi.org/10.1109/IECON.2012.6389568

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title = "Voltage balancing of a five-level flying capacitor converter using optimum switching transitions",

abstract = "The flying capacitor (FC) multilevel converter requires a capacitor voltage balancing mechanism for proper operation. This paper proposes a voltage balancing scheme for a five-level FC converter based on phase disposition pulse-width modulation (PD-PWM) using transitions that produce the minimum number of switching events. This strategy will be called optimal-transition voltage balancing (OTVB) scheme. Since multiple optimum switching transitions between two consecutive voltage levels may be available, such a redundancy is used to regulate the FC voltages at their desired levels. Those transitions that produce more switching events are avoided. The rest of transitions are evaluated by means of a cost function and the one that produces the minimum value is selected. Simulation results show a significant reduction of the average switching frequency as compared to the use of the optimal-state voltage balancing (OSVB) scheme, while maintaining the balance of the FC voltages. Moreover, the proposed PD-PWM voltage balancing strategy is robust to static and dynamic load conditions. {\textcopyright} 2012 IEEE.",

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Ghias, AMYM, Pou, J, Ciobotaru, M & Agelidis, VG 2012, Voltage balancing of a five-level flying capacitor converter using optimum switching transitions. in Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society., 6389568, IECON Proceedings (Industrial Electronics Conference), pp. 5006-5012, 38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012, Montreal, QC, Canada, 25/10/12. https://doi.org/10.1109/IECON.2012.6389568

Voltage balancing of a five-level flying capacitor converter using optimum switching transitions. / Ghias, Amer M.Y.M.; Pou, Josep; Ciobotaru, Mihai et al.
Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. 2012. p. 5006-5012 6389568 (IECON Proceedings (Industrial Electronics Conference)).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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AU - Agelidis, Vassilios G.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2012

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N2 - The flying capacitor (FC) multilevel converter requires a capacitor voltage balancing mechanism for proper operation. This paper proposes a voltage balancing scheme for a five-level FC converter based on phase disposition pulse-width modulation (PD-PWM) using transitions that produce the minimum number of switching events. This strategy will be called optimal-transition voltage balancing (OTVB) scheme. Since multiple optimum switching transitions between two consecutive voltage levels may be available, such a redundancy is used to regulate the FC voltages at their desired levels. Those transitions that produce more switching events are avoided. The rest of transitions are evaluated by means of a cost function and the one that produces the minimum value is selected. Simulation results show a significant reduction of the average switching frequency as compared to the use of the optimal-state voltage balancing (OSVB) scheme, while maintaining the balance of the FC voltages. Moreover, the proposed PD-PWM voltage balancing strategy is robust to static and dynamic load conditions. © 2012 IEEE.

AB - The flying capacitor (FC) multilevel converter requires a capacitor voltage balancing mechanism for proper operation. This paper proposes a voltage balancing scheme for a five-level FC converter based on phase disposition pulse-width modulation (PD-PWM) using transitions that produce the minimum number of switching events. This strategy will be called optimal-transition voltage balancing (OTVB) scheme. Since multiple optimum switching transitions between two consecutive voltage levels may be available, such a redundancy is used to regulate the FC voltages at their desired levels. Those transitions that produce more switching events are avoided. The rest of transitions are evaluated by means of a cost function and the one that produces the minimum value is selected. Simulation results show a significant reduction of the average switching frequency as compared to the use of the optimal-state voltage balancing (OSVB) scheme, while maintaining the balance of the FC voltages. Moreover, the proposed PD-PWM voltage balancing strategy is robust to static and dynamic load conditions. © 2012 IEEE.

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T3 - IECON Proceedings (Industrial Electronics Conference)

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T2 - 38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012

Y2 - 25 October 2012 through 28 October 2012

ER -

Voltage balancing of a five-level flying capacitor converter using optimum switching transitions

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