Comparative Study of Multilevel Converters using DQ Current Control

• Type: Article in International Scientific Journal
• Date: 2024-07-30

Authors

José Vicente (Author) FEUP; Agostinho Rocha (Author) FEUP

Journal

Title: U.Porto Journal of Engineering

Pages: 59-71

Publisher: Universidade do Porto. Faculdade de Engenharia

Other information

Authenticus ID: P-011-986

DOI: 10.24840/2183-6493_0010-003_002679

Abstract (EN): <jats:p>This paper presents a comprehensive comparative analysis of different multilevel converter topologies, including 2-level, Neutral Point-Clamped (NPC), Cascaded H-Bridge (CHB), and T-Type converters using the DQ current control strategy. The study aims to evaluate the performance of these topologies concerning current Total Harmonic Distortion (THD) and ripple in the direct and quadrature components of the current. A mathematical model of the grid is presented to facilitate the simulation study. The DQ current control scheme is implemented to regulate the current in both the direct and quadrature axes. The simulations are conducted under various operating conditions to capture the converters¿ performance across different load scenarios and modulation techniques. Results indicate significant variations in the performance metrics among the different converter topologies. The 2-level converter exhibits higher THD and ripple compared to the more complex multilevel topologies.</jats:p>

Language: English

Type (Professor's evaluation): Scientific