Open AccessReduction of torque and flux ripples in direct torque control for three‐level open‐end winding PMSM drive
Author(s) -
Eshwar Kusuma,
Vinay Kumar Thippripati
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2020.0487
Subject(s) - direct torque control , control theory (sociology) , torque , vector control , stall torque , voltage , stationary reference frame , flux (metallurgy) , voltage reference , reference frame , computer science , induction motor , physics , engineering , materials science , frame (networking) , control (management) , electrical engineering , artificial intelligence , metallurgy , thermodynamics , telecommunications
The direct torque control (DTC) of permanent magnet synchronous motor (PMSM) drives is a noticeable practice in industrial applications due to its quick dynamic performance. However, due to the presence of hysteresis controllers and inaccurate switching tables especially for the multilevel fed DTC drives are facing higher ripples in torque and flux response. An improved DTC for three‐level open‐end winding PMSM drive is proposed in this article and features reduction of flux and torque ripples. The torque and flux performances of the PMSM are directly controlled by the calculated reference voltage vector in the stationary reference frame. The voltage vector tables are proposed based on the length of the voltage space vectors and the actual voltage vector nearer to the calculated reference voltage vector is selected so that the minimum ripples exist in flux and torque responses. The steady‐state and dynamic conditions of the proposed DTC method are verified in the real‐time experiment and also compared with the conventional DTC as well as the recently developed control methods.