Details
| Original language | English |
|---|---|
| Article number | 9288752 |
| Pages (from-to) | 7600-7611 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 36 |
| Issue number | 7 |
| Early online date | 9 Dec 2020 |
| Publication status | Published - Jul 2021 |
Abstract
Quasi-two-level PWM operation of modular multilevel converters enables very low module capacitance even at low machine speeds and high torques while the current distortion is tolerable. In this article, the application of nonlinear inductors together with this operation mode is investigated to further decrease the module capacitances. The requirements for the inductors are analytically derived and the design of the nonlinear inductors using a stepped air gap is demonstrated. The feasibility and the advantages of quasi-two-level PWM operation with nonlinear inductors are validated using simulations and a laboratory prototype.
Keywords
- Modular multilevel converter (MMC), nonlinear inductor, quasi-two-level
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Power Electronics, Vol. 36, No. 7, 9288752, 07.2021, p. 7600-7611.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quasi-Two-Level PWM-Operated Modular Multilevel Converter With Nonlinear Branch Inductors
AU - Kucka, Jakub
AU - Lin, Siqi
AU - Friebe, Jens
AU - Mertens, Axel
PY - 2021/7
Y1 - 2021/7
N2 - Quasi-two-level PWM operation of modular multilevel converters enables very low module capacitance even at low machine speeds and high torques while the current distortion is tolerable. In this article, the application of nonlinear inductors together with this operation mode is investigated to further decrease the module capacitances. The requirements for the inductors are analytically derived and the design of the nonlinear inductors using a stepped air gap is demonstrated. The feasibility and the advantages of quasi-two-level PWM operation with nonlinear inductors are validated using simulations and a laboratory prototype.
AB - Quasi-two-level PWM operation of modular multilevel converters enables very low module capacitance even at low machine speeds and high torques while the current distortion is tolerable. In this article, the application of nonlinear inductors together with this operation mode is investigated to further decrease the module capacitances. The requirements for the inductors are analytically derived and the design of the nonlinear inductors using a stepped air gap is demonstrated. The feasibility and the advantages of quasi-two-level PWM operation with nonlinear inductors are validated using simulations and a laboratory prototype.
KW - Modular multilevel converter (MMC)
KW - nonlinear inductor
KW - quasi-two-level
UR - http://www.scopus.com/inward/record.url?scp=85097935563&partnerID=8YFLogxK
U2 - 10.1109/tpel.2020.3042635
DO - 10.1109/tpel.2020.3042635
M3 - Article
AN - SCOPUS:85097935563
VL - 36
SP - 7600
EP - 7611
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 7
M1 - 9288752
ER -