Extending Switching Frequency for Torque Ripple Reduction Utilizing a Constant Frequency Torque Controller in DTC of Induction Motors

Auzani Jidin; Nik Rumzi Nik Idris; Abdul Halim Mohd Yatim; Tole Sutikno; Malik E. Elbuluk

Extending Switching Frequency for Torque Ripple Reduction Utilizing a Constant Frequency Torque Controller in DTC of Induction Motors

Auzani Jidin

Nik Rumzi Nik Idris

Abdul Halim Mohd Yatim

Tole Sutikno

Malik E. Elbuluk

Vol. 11, No. 2, pp. 148-155, Mar. 2011

10.6113/JPE.2011.11.2.148

Direct torque control

Induction machine

Switching frequency

Torque ripple reduction

PDF

Abstract

Direct torque control (DTC) of induction machines is known to offer fast instantaneous torque and flux control with a simple control structure. However, this scheme has two major disadvantageous, namely, a variable inverter switching frequency and a high torque ripple. These problems occur due to the use of hysteresis comparators in conventional DTC schemes, particularly in controlling the output torque. This paper reviews the utilization of constant frequency torque controllers (CFTC) in DTC to solve these problems while retaining the simple control structure of DTC. Some extensions of the work in utilizing a CFTC will be carried out in this paper which can further reduce the torque ripple. This is particularly useful for a system which has a limited/low sampling frequency. The feasibility of a CFTC with an extended carrier frequency in minimizing the torque ripple is verified through experimental results.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

A. Jidin, N. R. N. Idris, A. H. M. Yatim, T. Sutikno, M. E. Elbuluk, "Extending Switching Frequency for Torque Ripple Reduction Utilizing a Constant Frequency Torque Controller in DTC of Induction Motors," Journal of Power Electronics, vol. 11, no. 2, pp. 148-155, 2011. DOI: 10.6113/JPE.2011.11.2.148.

[ACM Style]

Auzani Jidin, Nik Rumzi Nik Idris, Abdul Halim Mohd Yatim, Tole Sutikno, and Malik E. Elbuluk. 2011. Extending Switching Frequency for Torque Ripple Reduction Utilizing a Constant Frequency Torque Controller in DTC of Induction Motors. Journal of Power Electronics, 11, 2, (2011), 148-155. DOI: 10.6113/JPE.2011.11.2.148.