An Effective Switching-Table-Based DTC of Five-Phase PMSM for Reduction of Torque Ripples

Authors

Keywords:

Control period, duty cycle, five-phase permanent magnet synchronous motor, flux ripple, torque ripple

Abstract

Higher torque and flux ripples exist in conventional direct torque control (DTC) of five-phase permanent magnet synchronous motor (5-ϕ PMSM) drive due to application of single voltage vector over entire control period. Duty-cycle based DTC techniques are proposed for 5-ϕ PMSM recently to achieve superior steady-state responses. However, most of the duty cycle-based schemes are complex. To suppress the ripples in flux and torque, an effective switching table-operated DTC is proposed in which selection of active voltage vector (AVV) for independent torque and flux control is introduced for 5-ϕ PMSM. Secondly, the selected AVVs for torque and flux control are applied along with a null vector in two consecutive samples, respectively based on effective duty control scheme. The duty cycles of selected AVVs are determined to meet the reference flux and torques in respective control intervals, which ensures reduced flux and torque ripples. When voltage vector for torque control is applied, the effect on flux is negligible and vice versa, which achieves a decoupled flux and torque control. The proposed DTC is verified experimentally and compared with conventional DTC, conventional model predictive current control (MPCC) scheme, and a duty-cycle control based MPCC for 5-ϕ PMSM.

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Author Biographies

Rajanikanth Puli, National Institute of Technology Warangal, Warangal, Telangana.

Puli Rajanikanth received the B.Tech. degree in Electrical and Electronics Engineering from Jawaharlal Nehru Technological University, Hyderabad, India, in 2013, and the M.Tech. degree in Electrical Engineering from the National Institute of Technology, Warangal, in 2018, where he is currently pursuing the Ph.D. degree with the Department of Electrical Engineering. His research interests include power electronics, control of multi-phase induction motor and permanent magnet synchronous motor (PMSM) drives.

Vinay Kumar Thippiripati, National Institute of Technology Warangal, Warangal, Telangana.

Vinay Kumar Thippiripati received the B.Tech. and M.Tech. degrees in Electrical Engineering from Jawaharlal Nehru Technological University, Hyderabad, India, in 2005 and 2008, respectively. He received the Ph.D. degree in Electrical Engineering from the National Institute of Technology, Warangal, India, in 2015. In 2013, he joined in National Institute of Technology, Warangal, India, as an Assistant Professor. His research interests include power electronics and drives, direct torque control, predictive torque control, open-end winding induction motor drives, multilevel inverters, hybrid electric vehicles, and renewable energy interfacing.

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Published

2026-08-30

How to Cite

Puli, R., & Thippiripati, V. K. (2026). An Effective Switching-Table-Based DTC of Five-Phase PMSM for Reduction of Torque Ripples. IEEE Latin America Transactions, 24(10), 1147–1158. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/10348

Issue

Vol. 24 No. 10 (2026): Ordinary Issue

Section

Electric Energy