Model Predictive Control with Extrapolation Strategy for the Arm Current Commutation Control of Modular Multilevel Converter Operating in Quasi Two-Level Mode

Xiaonan Gao, Wei Tian, Zhenbin Zhang, Ralph Kennel

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

3 Zitate (Scopus)

Abstract

Modular multilevel converters (MMCs) have become an attractive topology for medium-voltage motor drive applications due to their modular construction and voltage scalability. The main drawback of using MMC to drive motors is the large voltage variation of submodule (SM) capacitors when the motor is running at a low speed with a large load torque condition. Operating in the quasi two-level mode of MMCs is an effective solution for such a problem. The arm current commutation control is the most important part for the operation of MMCs in the quasi two-level mode. This paper proposes a new current commutation method. The general idea is to use the delay control method to realize the arm current commutation. Therefore, the key point is to decide when to delay the operation of a submodule at each step during the commutation process. In this paper, the model predictive control (MPC) method with extrapolation technique has been used to determine whether to delay the SM at the present moment. Therefore, the waveforms of the two arms in the same phase may not be completely complementary throughout the whole commutation period. Due to such non-complementary PWMs, the currents between two arms can be exchanged.

OriginalspracheEnglisch
TitelICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia
Herausgeber (Verlag)Institute of Electrical and Electronics Engineers Inc.
Seiten160-165
Seitenumfang6
ISBN (elektronisch)9788957083130
PublikationsstatusVeröffentlicht - Mai 2019
Veranstaltung10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia - Busan, Südkorea
Dauer: 27 Mai 201930 Mai 2019

Publikationsreihe

NameICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia

Konferenz

Konferenz10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia
Land/GebietSüdkorea
OrtBusan
Zeitraum27/05/1930/05/19

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