Association smooth-pole dual open-end windings permanent magnet synchronous machine with cascaded 2-level inverters for improved performances

• Date: 2026
• Main Authors: Nayli, A., Guizani, S., Ben Ammar, F.
• Format: Article
• Language: English
• Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2026
• Subjects: smooth-pole dual open end permanent magnet synchronous machine; cascaded 2-levels inverters; power segmentation; reliability
• Online Access: http://eie.khpi.edu.ua/article/view/338132
• Journal Title: Electrical Engineering & Electromechanics

Introduction. Power segmentation is an increasingly important priority in high-power industrial drive applications that utilize AC machines. Problem. To improve the dynamic performance, reliability and power segmentation of drive systems in high-power applications (above the megawatt range), it’s advantageous to replace a single high-power converter with several low-power converters. This principle is applied to the combination of AC machines and inverter structures. Goal. The authors propose a novel dual open-end windings permanent magnet synchronous machine. This machine reduces the required size of the power supply inverters while also improving dynamic performances and lifespan. Its power supply using 2-levels cascading inverters, further enhances these performances. Methodology. For this study, the mathematical model of the system in the Park reference frame is introduced and validated using the MATLAB/Simulink environment. First, simulation results are presented for the proposed machine supplied by four conventional two-level inverters based on the pulse width modulation technique. Next, the new machine is fed by four multilevel converters, with each converter consisting of two two-level inverters. To further demonstrate the benefits of this converter structure, the authors then use a configuration with three cascaded two-level inverters. The results demonstrate that the use of the new machine with conventional two-level inverters ensures power segmentation and improves the quality of the voltage, stator current, and torque. Furthermore, associating this same machine with cascaded multilevel inverter structures significantly enhances dynamic performance and reliability. The scientific novelty lies in the synergy achieved by integrating the novel synchronous machine with the cascaded two-level inverters, enabling the system to simultaneously surpass conventional limitations in both performance and reliability. Practical value. A simulation model of the novel dual open-end winding permanent magnet synchronous machine was implemented to validate the superior performance achieved with cascaded multilevel inverter structures for voltage supply compared to conventional two-level inverters. References 19, table 2, figures 17.