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Title: Comparative analysis of 2-level and multi-level inverter fed coupled im drives based on V/f and DTC techniques
Authors: Misal, S
Swetha, T
Wandalkar, M
Tai, CY 
Keywords: Direct Torque Control
Induction Motor
Multi-Level Inverter
V/f control
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers
Source: 6th International Conference on Power Electronics Systems and Applications, PESA 2015, Hong Kong, 15 - 17 December 2015, 7398901, p. 2 How to cite?
Abstract: For industrial sectors involving coupled induction motor drives, control of speed/torque is an utmost critical issue especially in dynamic conditions. Considering this aspect, there is a dire need of a flexible and efficient control which could best fit in the scheme of coupled drive operation. In this paper an effort has been made to explore different facets of speed/toque control for coupled induction motors based on traditional scalar (Volt/Hz) and advanced vector (Direct Torque) techniques. Also in order to facilitate improvements in terms of harmonic contents and power losses, it has been proposed to replace traditional 2-Level Inverter in Induction Motor drive with an advanced Reversing Voltage Multi Level Inverter (MLI) topology providing 5-Levels of output phase voltage. Based on the simulation study for both the control strategies in MATLAB/Simulink, it has been shown that harmonic distortions present in the fundamental output voltage of a coupled drive fed by Multilevel Inverters are comparatively less when compared to its 2-Level counterpart. These reduced distortions are in-turn responsible for toning down filtering requirements at the input of motor, thereby enhancing the efficiency of drive system.
ISBN: 9781509000623
DOI: 10.1109/PESA.2015.7398901
Appears in Collections:Conference Paper

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