Open AccessDirect torque and flux control of switched reluctance motor with enhanced torque per ampere ratio and torque ripple reduction
Author(s) -
Reddy P. Krishna,
Ronanki Deepak,
Parthiban P.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.8241
Subject(s) - stall torque , switched reluctance motor , direct torque control , torque ripple , control theory (sociology) , ampere , torque limiter , torque , damping torque , torque motor , engineering , computer science , physics , induction motor , current (fluid) , control (management) , electrical engineering , voltage , artificial intelligence , thermodynamics
A smooth torque control of switched reluctance motor (SRM) is essential to avoid speed fluctuations causing stability problems in vehicular applications. This can be accomplished by an appropriate motor design and/or use of direct control of torque in SRM. It is reported that high RMS current is required to minimise the torque ripple in the conventional direct torque and flux control (DTFC), thereby reducing the torque per ampere ratio. To overcome this issue, a new DTFC technique with improved torque per ampere ratio while minimising torque ripple in an SRM traction drive is presented. Results demonstrated that the proposed DTFC technique reduces torque ripple with enhanced torque per ampere. Finally, the performance of the proposed scheme is compared with conventional DTFC of a four‐phase (8/6) SRM to show the improvement in the traction drive.