Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM

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

doi:10.1109/PECon.2012.6450221

Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM

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

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

9 Citations (Scopus)

Abstract

In flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages at the desired values is required. This paper proposes a new closed-loop voltage balancing method for multilevel FC converters using PS-PWM. The proposed method balances the voltages of the FCs by modifying the duty cycle of each switch of the FC converter using a proportional (P) controller. The crossed effect between FC currents and duty cycles is considered and is used for FC voltage balancing. The Simulation results verify that the proposed voltage balancing method is very robust to different operating conditions, such as load transients and non-linear loads.

Original language	English
Title of host publication	PECon 2012
Subtitle of host publication	2012 IEEE International Conference on Power and Energy
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	274-279
Number of pages	6
ISBN (Electronic)	9781467350198
DOIs	https://doi.org/10.1109/PECon.2012.6450221
Publication status	Published - 2012
Externally published	Yes
Event	2012 IEEE International Conference on Power and Energy, PECon - 2012 - Kota Kinabalu, Malaysia Duration: 2 Dec 2012 → 5 Dec 2012

Other

Other	2012 IEEE International Conference on Power and Energy, PECon - 2012
Country/Territory	Malaysia
City	Kota Kinabalu
Period	2/12/12 → 5/12/12

Keywords

Capacitor voltage balancing
Flying capacitor (FC) converter
Multilevel converter
Phase-shifted pulse width modulation (PS-PWM)

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10.1109/PECon.2012.6450221

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874480763&doi=10.1109%2fPECon.2012.6450221&partnerID=40&md5=5596913aa600846dc09e6d5d05c73af1

Cite this

@inproceedings{63a0c969879f47a3bf754d09ba631af9,

title = "Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM",

abstract = "In flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages at the desired values is required. This paper proposes a new closed-loop voltage balancing method for multilevel FC converters using PS-PWM. The proposed method balances the voltages of the FCs by modifying the duty cycle of each switch of the FC converter using a proportional (P) controller. The crossed effect between FC currents and duty cycles is considered and is used for FC voltage balancing. The Simulation results verify that the proposed voltage balancing method is very robust to different operating conditions, such as load transients and non-linear loads.",

keywords = "Capacitor voltage balancing, Flying capacitor (FC) converter, Multilevel converter, Phase-shifted pulse width modulation (PS-PWM)",

author = "Ghias, {Amer M. Y. M.} and Josep Pou and Mihai Ciobotaru and Agelidis, {Vassilios G.}",

year = "2012",

doi = "10.1109/PECon.2012.6450221",

language = "English",

pages = "274--279",

booktitle = "PECon 2012",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "2012 IEEE International Conference on Power and Energy, PECon - 2012 ; Conference date: 02-12-2012 Through 05-12-2012",

}

Ghias, AMYM, Pou, J, Ciobotaru, M & Agelidis, VG 2012, Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM. in PECon 2012: 2012 IEEE International Conference on Power and Energy. Institute of Electrical and Electronics Engineers (IEEE), pp. 274-279, 2012 IEEE International Conference on Power and Energy, PECon - 2012, Kota Kinabalu, Malaysia, 2/12/12. https://doi.org/10.1109/PECon.2012.6450221

Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM. / Ghias, Amer M. Y. M.; Pou, Josep; Ciobotaru, Mihai et al.
PECon 2012: 2012 IEEE International Conference on Power and Energy. Institute of Electrical and Electronics Engineers (IEEE), 2012. p. 274-279.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM

AU - Ghias, Amer M. Y. M.

AU - Pou, Josep

AU - Ciobotaru, Mihai

AU - Agelidis, Vassilios G.

PY - 2012

Y1 - 2012

N2 - In flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages at the desired values is required. This paper proposes a new closed-loop voltage balancing method for multilevel FC converters using PS-PWM. The proposed method balances the voltages of the FCs by modifying the duty cycle of each switch of the FC converter using a proportional (P) controller. The crossed effect between FC currents and duty cycles is considered and is used for FC voltage balancing. The Simulation results verify that the proposed voltage balancing method is very robust to different operating conditions, such as load transients and non-linear loads.

AB - In flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages at the desired values is required. This paper proposes a new closed-loop voltage balancing method for multilevel FC converters using PS-PWM. The proposed method balances the voltages of the FCs by modifying the duty cycle of each switch of the FC converter using a proportional (P) controller. The crossed effect between FC currents and duty cycles is considered and is used for FC voltage balancing. The Simulation results verify that the proposed voltage balancing method is very robust to different operating conditions, such as load transients and non-linear loads.

KW - Capacitor voltage balancing

KW - Flying capacitor (FC) converter

KW - Multilevel converter

KW - Phase-shifted pulse width modulation (PS-PWM)

U2 - 10.1109/PECon.2012.6450221

DO - 10.1109/PECon.2012.6450221

M3 - Conference proceeding contribution

SP - 274

EP - 279

BT - PECon 2012

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 2012 IEEE International Conference on Power and Energy, PECon - 2012

Y2 - 2 December 2012 through 5 December 2012

ER -

Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM

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