Performance of Three Level Diode Clamped Multilevel Inverter for Closed Loop v/f co Technology

This paper focuses on the implementation of a three-level diode-clamped multilevel inverter (DCMLI) using eight MOSFET-based switching devices, designed to control a three-phase induction motor through a closed-loop V/f control strategy. The system utilizes Space Vector Modulation (SVM) to optimize inverter performance and motor response. Simulation and realtime testing are conducted to evaluate essential parameters such as total harmonic distortion, efficiency, power factor, and system dynamics under various load conditions. The V/f control method ensures consistent voltage-to-frequency ratio, contributing to reliable motor operation over a range of speeds. Findings highlight the inverter’s suitability for energy-efficient and high-precision industrial motor control applications.