• D. K. P. Singh
• Sandeep Singh Sengar
• Ankur Kumar

Many industrial applications require large rating induction motors to be controlled with ripple free torque for a wide speed rang in both directions. The harmonics in the output of these converters affects the speed and torque and also reduces the life of induction motor. The switching frequency has to be large to obtain acceptable quality output from single converter increasing the switching frequency losses. Larger rating single PWM converter is used extensively for high power applications and the concept of multi inverter has been introduced to reduce the rating of individual device / converter by connecting many devices / converters is series and / or parallel. Smaller rated converters may be connected in parallel through current sharing inductors to meet the objective of ripple free torque for a range of speed and reduction in harmonic content. This paper aims to compare the performance of vector controlled induction motor drive fed by single converter and multi inverter with phase shift in triangular carrier. The switching frequency losses incurred in inverters are also compared for single and multi inverter system with implementation. The switching losses and the simulation results predict better performance of proposed multi inverter.

Current sharing inductor, multi inverter, phase shifted triangular carrier, switching frequency losses

"A Comparison of Single and Multi Inverter connected in Current Sharing Mode for High Power Induction Motor Drive", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.3, Issue 6, page no.154-161, June-2016, Available :http://www.jetir.org/papers/JETIR1701722.pdf

"A Comparison of Single and Multi Inverter connected in Current Sharing Mode for High Power Induction Motor Drive", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.3, Issue 6, page no. pp154-161, June-2016, Available at : http://www.jetir.org/papers/JETIR1701722.pdf