Elimination of Common Mode Voltage using Model Predictive Control of Five Phase Neutral Point Clamped Multi Level Inverter

• Published in: 2022 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES) pp. 1 - 6
• Main Authors: Vinoth, J., Bharatiraja, C., Kodumur Meesala, Ravi Eswar
• Format: Conference Proceeding
• Language: English
• Published: IEEE 14.12.2022
• Subjects: Common Mode Voltage; Five-Phase SVM; Inverters; Model Predictive Control; Motor drives; Multi-Level Inverter; Permanent magnet motors; Pulse width modulation; Support vector machines; Switches; Three-level NPC Inverter; Total harmonic distortion
• DOI: 10.1109/PEDES56012.2022.10080495

The 5-phase inverters are gaining attraction for its advantages like reduced Common Mode Voltage (CMV), lower switching stress and losses. The 5-phase 3-level Neutral Point Clamped (NPC) inverter is preferred in this paper. The Space Vector Modulation (SVM) delivers lower Total Harmonic Distortion (THD), better DC link voltage balancing than other Pulse Width Modulation (PWM) techniques. The Model Predictive Control (MPC) technique is used in this paper which provides better dynamic control in the closed loop operation. In 5-phase inverter, 113 vectors are generally used for SVM due to inequality relationship among phase voltages. To eliminate the CMV, 51 vectors are selected that is further reduced to 31 vectors by eliminating the x-y components. The SVM with 31 vectors is proposed in this paper where the computational burden is reduced as the number of switching vectors are reduced. The Permanent Magnet Synchronous Motor (PMSM) is preferred in this paper. The simulation is carried out for the evaluation of results like THD, CMV, output voltage, etc.