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

Multi-phase voltage source inverter (VSI) with numerous advantages dominates three-phase VSIand 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 3φ and 5φ induction motor drive with time modulated switching technique. First, a 3φ and 5-φ VSI model is compared with different open fault conditions to show the fault tolerant capability of 5φ induction motor drive. Next, time modulated switching technique (Kim-sul Algorithm) is designed for 5-φ 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-φ 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.