Effect of Switching Frequency in DTC Based Switched Reluctance Motor Drive

Srinivas Pratapgiri

Abstract


Since the magnetizing characteristics are highly non-linear in nature, the torque ripple is high in the Switched Reluctance Motor (SRM). The torque ripple can be minimized by using a novel control technique called Direct Torque Control (DTC). In DTC technique, torque is controlled directly through control of magnitude of the flux-linkage and change in speed of the stator flux vector. The flux and torque are maintained within set hysteresis bands. This paper analyzes performance of the DTC based drive mainly in terms of the torque ripple in MATLAB/SIMULINK environment and results are discussed elaborately. The paper also analyzes the effect of these two bands on switching frequency of the converter.


 http://dx.doi.org/10.11591/telkomnika.v12i12.6718 


Keywords


Switched Reluctance Motor, Direct Torque Control, Switching Frequency, Torque Ripple

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