Comparative Analysis of Fault-Tolerant on Three Phase and Five Phase VSI fed Induction Motor Drive
D. Raja1, G. Ravi2

1D. Raja, Research Scholar, Department of EEE, Pondicherry Engineering College, Pillaichavady, Puducherry, India.
2G. Ravi, Professor, Department of EEE, Pondicherry Engineering College, Pillaichavady, Puducherry, India,

Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 232-237 | Volume-8 Issue-7, May 2019 | Retrieval Number: G5147058719/19©BEIESP
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Abstract: 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 3- ϕ and 5-ϕ induction motor drive with various PWM techniques. First, a 3- ϕ and 5-ϕ VSI model is compared with different open fault conditions to show the fault tolerant capability of 5- ϕ induction motor drive. Next, PWM switching techniques are designed for 5-ϕ VSI fed induction motor drive for an efficient control. The suitable switching technique is identified by setting the high fundamental voltage 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 sinusoidal pulse width modulation (SPWM) 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. MATLAB/Simulink software results included in this paper to show and verify the theoretical concepts.
Keyword: SPWM, three phase VSI, five-phase VSI, five-phase induction motor, total harmonic distortion.
Scope of the Article: Image analysis and Processing.