A New Torque and Flux Controller for Direct Torque Control of Induction Machines

Author

Idris, N.R.N. ; Chuen Ling Toh ; Elbuluk, M.E.

Author_Institution

Electr. Energy Conversion Dept., Universiti Teknologi Malaysia, Skudai

Volume

42

Issue

6

fYear

2006

Firstpage

1358

Lastpage

1366

Abstract

This paper presents the implementation of a high-performance direct torque control (DTC) of induction machines drive. DTC has two major problems, namely, high torque ripple and variable switching frequency. In order to solve these problems, this paper proposed a pair of torque and flux controllers to replace the hysteresis-based controllers. The design of these controllers is fully discussed and a set of numerical values of the parameters for the proposed controllers is given. The simulation of the proposed controllers applied to the DTC drive is presented. The simulation results are then verified by experimental results. The hardware implementation is mainly constructed by using DSP TMS320C31 and Altera field-programmable gate array devices. The results prove that a significant torque and stator flux ripples reduction is achieved. Likewise, the switching frequency is fixed at 10.4 kHz and a more sinusoidal phase current is obtained

Keywords

asynchronous machines; control system synthesis; digital signal processing chips; field programmable gate arrays; machine control; magnetic variables control; numerical analysis; stators; torque control; Altera field-programmable gate array devices; DSP TMS320C31; direct torque controller; flux controller; high torque ripple; hysteresis-based controllers; induction machines; ripples reduction; variable switching frequency; Digital signal processing; Field programmable gate arrays; Hysteresis; Induction machines; Pulse modulation; Stators; Support vector machines; Switching frequency; Torque control; Voltage control; Constant switching frequency; DSP control implementation; direct torque control (DTC); field-programmable gate arrays (FPGAs); flux controller; induction machines; torque controller; torque ripple;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2006.882685

Filename

4012291