Enhanced Predictive Torque Control with Auto-Tuning Feature for Induction Motor Drive

Abstract

This article presents an improved predictive torque control scheme for an induction motor (IM) drive by incorporating auto tuning feature. Among the variant control techniques, predictive torque control for an IM drive is the real choice for high dynamic performance and it became more popular since it involves control parameters in cost function. Weighting factor adjustment in cost function has direct influence in the performance of a drive. The main problem associated with the conventional predictive torque control scheme is the selection of convenient weighting factors to accomplish optimal torque and flux response. To overcome this problem, auto tuning of weighting factor based on control objective is introduced. With this, optimal weighting factor is selected for cost function evaluation in every sampling time, thereby giving desired performance. To validate this, MATLAB/Simulink and experimental results are presented for an IM drive fed by two level voltage source inverter. These results establish that proposed control scheme of IM drive exhibits optimal torque and flux response.

Keywords:

• auto tuning
• induction motor (IM) drive
• predictive torque control (PTC)
• voltage source inverter (VSI)

Additional information

Notes on contributors

Kodumur Meesala Ravi Eswar

Kodumur Meesala Ravi Eswar received his B.Tech degree in Electrical and Electronics Engineering from Jawaharlal Nehru Technological University, Ananthapur, India, in 2014 and M.Tech degree from VIT University, Vellore, India, in 2016. Presently he is doing research in the area of Power Electronics and Drives at National Institute of Technology, Warangal, India.

Kunisetti Venkata Praveen Kumar

Kunisetti Venkata Praveen Kumar received his B.Tech degree in Electrical and Electronics Engineering from Jawaharlal Nehru Technological University, Kakinada, India, in 2011 and M.Tech degree from JNTU, Kakinada, India, in 2014. Presently he is doing research in the area of Power Electronics and Drives at National Institute of Technology, Warangal, India.

Thippiripati Vinay Kumar

Thippiripati Vinay Kumar received his B.Tech degree in Electrical and Electronics Engineering from Jawaharlal Nehru Technological University, Hyderabad, India, in 2005 and M.Tech degree from JNTU, Hyderabad, India, in 2008. He received his Ph.D degree from National Institute of Technology, Warangal, India, in 2014. Since 2013, he is working as an assistant professor in National Institute of Technology, Warangal, India. He published many research papers in national and international journals and conferences. His research interests are power electronics and drives, multi-level inverters and renewable energy.