Fuzzy Systems

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Fuzzy-Based Torque Ripple Optimization and Digitalized Sector Selection in DTC Scheme


Affiliations
1 Anna University, Regional Centre, Coimbatore, India
2 Prathyusha Institute of Technology, Chennai, India
     

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This paper presents an efficient method of torque ripple optimization in Direct Torque Control (DTC) scheme for an induction motor drive (IMD), where the optimization has been done by varying the bandwidth of the torque hysteresis comparator (band adaption) online using fuzzy controller and also here a simple Digital Logic Circuit (DLC) has been presented, which reduces the computation burden on the DSP to evaluate the sector number of the flux linkage space vector and so the proposed DTC scheme does not require any high speed/high cost DSP in order to attain the fast and precise control. In order to test the performance of the proposed DTC scheme, a complete simulation model for both the conventional and proposed DTC are developed using MATLAB/Simulink.

Keywords

Induction Motor (IM) Drives, Direct Toque Control (DTC), Field-Oriented Control (FOC), Fuzzy Logic Controller (FLC), Digital Logic Gates, Torque and Flux Hysteresis Controller, Band Adaption, Torque Ripples.
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  • Fuzzy-Based Torque Ripple Optimization and Digitalized Sector Selection in DTC Scheme

Abstract Views: 232  |  PDF Views: 3

Authors

D. Deenadayalan
Anna University, Regional Centre, Coimbatore, India
I. Alexandar Beski
Prathyusha Institute of Technology, Chennai, India
E. Balaji
Prathyusha Institute of Technology, Chennai, India

Abstract


This paper presents an efficient method of torque ripple optimization in Direct Torque Control (DTC) scheme for an induction motor drive (IMD), where the optimization has been done by varying the bandwidth of the torque hysteresis comparator (band adaption) online using fuzzy controller and also here a simple Digital Logic Circuit (DLC) has been presented, which reduces the computation burden on the DSP to evaluate the sector number of the flux linkage space vector and so the proposed DTC scheme does not require any high speed/high cost DSP in order to attain the fast and precise control. In order to test the performance of the proposed DTC scheme, a complete simulation model for both the conventional and proposed DTC are developed using MATLAB/Simulink.

Keywords


Induction Motor (IM) Drives, Direct Toque Control (DTC), Field-Oriented Control (FOC), Fuzzy Logic Controller (FLC), Digital Logic Gates, Torque and Flux Hysteresis Controller, Band Adaption, Torque Ripples.