A Novel Six-Level Inverter with Reduce Number of Components for Five-Phase Open-End Winding Induction Motor Drive

This paper proposes a novel six-level inverter five phase open-end winding induction motor (OEWIM) drive. This topology utilizes a combination of a 3-level, 5-phase inverter and a 2-level, 5-phase inverter to achieve a 6-level, 5-phase inversion operation. Neutral point clamped (NPC) six-level five-phase inverter which requires 50 switches, 5 DC bus capacitors and 40 neutral point clamped diode, Similarly, the flying capacitor (FC) six-level five-phase inverter topology requires 50 switches, 5 DC bus capacitors and 40 flying capacitors while the proposed topology requires only 30 switches and 3 DC voltage sources. The proposed topology reduces the component count which reduces control complexity and switching losses of the inverter. Five-phase OEWIM drives have several advantages like improved torque ripple and speed performance during load variation, transient response etc. as compared to three-phase OEWIM drives. Additionally, the increased number of phases allows for higher power delivery, making the proposed topology suitable for high-powered drives. The performance of the inverter is evaluated using level-shifted pulse width modulation (LSPWM) and validated through simulations in the MATLAB/Simulink environment.