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

Year: 2025

Type: article

Abstract: 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 itsdv/dtvalue. The step CMV value per sampling period has only two types: greater than zero or less than zero, which greatly reduces thedv/dtvalue. 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.

Source: IEEE Access

DOI: 10.1109/access.2025.3613592

Authors: Xiaomin Han, Qifeng Han, Mingmin Liu, Hongliang Zhang

Institutions: Shandong University of Engineering and Vocational Technology, National Supercomputing Center in Jinan

Language: English

Topic: Multilevel Inverters and Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

OpenAlex ID: W4414432434

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