Design of Five Phase Voltage Source Inverter with Time Modulated Switching Technique for Induction Motor Drive

Abstract

Multi-phase voltage source inverter (VSI) with numerous advantages dominates three-phase VSI and emerges as a potential contender and viable solution for the high power electric drive applications in industries. When multi-phase voltage source inverters (VSIs) are used to drive the induction motor, it requires a suitable switching technique for its control. This paper investigates the performance of $3-\varphi$ and $5 \varphi$ induction motor drive with time modulated switching technique. First, a $3-\varphi$ and $5-\varphi$ VSI model is compared with different open fault conditions to show the fault tolerant capability of $5-\varphi$ induction motor drive. Next, time modulated switching technique (Kim-sul Algorithm) is designed for $5-\varphi$ VSI fed induction motor drive for an efficient control. The proposed scheme is simple and equivalent to space vector modulation technique. The performances of the $5-\varphi$ VSI fed IM drive is tested with this switching technique, and the results observed in terms of harmonic contents present in the output voltage waveform. MATLAB/Simulink software results included in this paper to show and verify the theoretical concepts.