Design and Implementation of Five Phase Inverter with modified SVPWM Switching Technique for Induction Motor Drive

Multi-phase Induction motor drives (MPIMD) with numerous advantages dominates three-phase drives and emerges as a potential contender and viable solution for the high power electric drive applications. When multi-phase AC drives fed from voltage source inverters (VSIs) requires a suitable PWM method of control. This paper investigates the performance of 5-ϕ induction motor drive with various space vector PWM (SVPWM) techniques. First, a 5-ϕ VSI model is presented in terms of space vectors. Next, modified SVPWM switching techniques are introduced based on medium, large and the combination of medium and large vectors, which provide its working with reduced %THD in the output voltages. The proposed scheme uses the full DC bus voltage, and the output response superior with low lower order harmonics than the conventional SVPWM methods. The performances of the 5-ϕ VSI fed IM drive tested with various switching techniques, and the results observed in terms of harmonic contents present in the output voltage waveform. The hardware implementation and its results are included in this paper to show and verify the theoretical concepts and the MATLAB / Simulink software results.