Details
| Original language | English |
|---|---|
| Article number | 8908812 |
| Pages (from-to) | 6842-6853 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 35 |
| Issue number | 7 |
| Publication status | Published - Jul 2020 |
Abstract
Quasi-Two-Level PWM Operation of modular multilevel converters enables a significantly smaller amount of installed module capacitance, even with low output frequencies required for machine drives. This article presents an implementation of this operation mode with an improved current control that leads to fast and precise current transitions. The proposed current control combines a deadbeat controller with a simple hysteresis controller that uses a predictive estimation of branch currents, which are both implemented using an FPGA. The enhanced performance of the proposed control is demonstrated by a comparison to the original one. Experimental results on a laboratory prototype prove the feasibility of Quasi-Two-Level PWM Operation as a machine drive and validate the advantage of reduced overvoltages with long machine cables in comparison to those of conventional two-level inverters.
Keywords
- Modular multilevel converter (MMC), pulse-width modulation (PWM), quasi-two-level, reduced capacitance
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Power Electronics, Vol. 35, No. 7, 8908812, 07.2020, p. 6842-6853.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Improved Current Control for a Quasi-Two-Level PWM-Operated Modular Multilevel Converter
AU - Kucka, Jakub
AU - Mertens, Axel
N1 - Funding Information: This work was supported by Deutsche Forschungsgeme-inschaft (German Research Foundation) Project 324166923. This article is based on work published in [1] at ECCE’2018 conference. Recommended for publication by Associate Editor Prof. M. Saeedifard. (Corresponding author: Jakub Kucka.) The authors are with the Institute for Drive Systems and Power Electronics, Leibniz University Hannover, 30167 Hannover, Germany (e-mail: jakub.kucka@ial.uni-hannover.de; mertens@ial.uni-hannover.de).
PY - 2020/7
Y1 - 2020/7
N2 - Quasi-Two-Level PWM Operation of modular multilevel converters enables a significantly smaller amount of installed module capacitance, even with low output frequencies required for machine drives. This article presents an implementation of this operation mode with an improved current control that leads to fast and precise current transitions. The proposed current control combines a deadbeat controller with a simple hysteresis controller that uses a predictive estimation of branch currents, which are both implemented using an FPGA. The enhanced performance of the proposed control is demonstrated by a comparison to the original one. Experimental results on a laboratory prototype prove the feasibility of Quasi-Two-Level PWM Operation as a machine drive and validate the advantage of reduced overvoltages with long machine cables in comparison to those of conventional two-level inverters.
AB - Quasi-Two-Level PWM Operation of modular multilevel converters enables a significantly smaller amount of installed module capacitance, even with low output frequencies required for machine drives. This article presents an implementation of this operation mode with an improved current control that leads to fast and precise current transitions. The proposed current control combines a deadbeat controller with a simple hysteresis controller that uses a predictive estimation of branch currents, which are both implemented using an FPGA. The enhanced performance of the proposed control is demonstrated by a comparison to the original one. Experimental results on a laboratory prototype prove the feasibility of Quasi-Two-Level PWM Operation as a machine drive and validate the advantage of reduced overvoltages with long machine cables in comparison to those of conventional two-level inverters.
KW - Modular multilevel converter (MMC)
KW - pulse-width modulation (PWM)
KW - quasi-two-level
KW - reduced capacitance
UR - http://www.scopus.com/inward/record.url?scp=85082301655&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2019.2954992
DO - 10.1109/TPEL.2019.2954992
M3 - Article
AN - SCOPUS:85082301655
VL - 35
SP - 6842
EP - 6853
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 7
M1 - 8908812
ER -