Optimal Vector Sequence Model Predictive Control to Suppress Common-Mode Voltage for Five-Level Converters | Zendy

Xiaomin Han | Zendy; Qifeng Han | Zendy; Mingmin Liu | Zendy; Hongliang Zhang | Zendy

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Optimal Vector Sequence Model Predictive Control to Suppress Common-Mode Voltage for Five-Level Converters

Author(s) -

Xiaomin Han,

Qifeng Han,

Mingmin Liu,

Hongliang Zhang

Publication year - 2025

Publication title -

ieee access

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.587

H-Index - 127

eISSN - 2169-3536

DOI - 10.1109/access.2025.3613592

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

In this paper, an optimal vector sequence model predictive control (OVS-MPC) is proposed for the five-level active neutral-point-clamped (5L-ANPC) converter to suppress the common-mode voltage (CMV). OVS-MPC not only reduces the amplitude of CMV but also decreases its dv/dt value. The step CMV value per sampling period has only two types: greater than zero or less than zero, which greatly reduces the dv/dt value. The OVS-MPC achieves a fixed switching frequency, with one phase state remaining unchanged and the other two phases changing only once per sampling period. In addition, the switching sequence is redesigned in the OVS-MPC to reduce the switching losses between adjacent sampling periods. The cost function does not contain any weighting factors, and it can determine the sub-sectors, select the candidate vectors, and calculate the duty ratios. Finally, the simulation and experiment are conducted on a 5L-ANPC platform. Compared with existing MPC strategies, the OVS-MPC can significantly reduce the RMS value of CMV, and the CMV amplitude will not increase under all modulation indices.

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