Finite-Set Model Predictive Control for Eight-Switch Three-Phase NPC Converter with DC-Link Voltages Fluctuation Suppression

DOI

10.2991/cmsa-18.2018.20How to use a DOI?

Keywords

finite-set model predictive control; eight-switch three-level neutral point clamped converter; cost function

Abstract

The three-level neutral point clamped converter (NPC) is one of the most promising topologies for medium-voltage high-power applications. However, the system stability is challenged by the DC-link capacitor voltages fluctuation especially in the presence of fault tolerant operation condition. To solve this, a novel finite-set model predictive control (FS-MPC) for eight-switch three-phase NPC converter (ESTP-NPC) in balanced grids is proposed for fault tolerant operation in this paper. The main objective of this work is to achieve the DC-link capacitor voltages fluctuation suppression without adding any additional components. Specifically, in order to keep the capacitor voltages balancing, an exact constraint term is introduced into the normalized cost function used in the ESTP-NPC. Thus, the system stability can be enhanced, and the DC-link capacitor voltages fluctuation can be suppressed effectively. Finally, simulation results are presented to verify the efficacy of the proposed method.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zeyu Wang
AU  - Molin Zhao
PY  - 2018/04
DA  - 2018/04
TI  - Finite-Set Model Predictive Control for Eight-Switch Three-Phase NPC Converter with DC-Link Voltages Fluctuation Suppression
BT  - Proceedings of the 2018 International Conference on Computer Modeling, Simulation and Algorithm (CMSA 2018)
PB  - Atlantis Press
SP  - 85
EP  - 88
SN  - 1951-6851
UR  - https://doi.org/10.2991/cmsa-18.2018.20
DO  - 10.2991/cmsa-18.2018.20
ID  - Wang2018/04
ER  -