Constant and high switching frequency torque controller for DTC drives

Chuen Ling Toh, N. R.N. Idris, A. H.M. Yatim

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The letter presents a new method of increasing the switching frequency of a direct torque control (DTC) of induction machines. The method simply replaces the hysteresis comparator of the conventional DTC drives with a triangular waveform-based constant switching frequency controller. By synchronizing the digital signal processor (DSP) sampling with a triangular waveform and with an appropriate systematic controller design, a high switching frequency DTC drive is possible without requiring a high-frequency space-vector modulator. The implementation of the controller is simple and operates based on waveform comparisons; in this letter it is implemented using a combination of a DSP and a field programmable gate array device. Simulation and experimental results indicate that the controller both reduces the torque ripple and maintains a constant switching frequency.

Original languageEnglish
Pages (from-to)76-80
Number of pages5
JournalIEEE Power Electronics Letters
Volume3
Issue number2
DOIs
Publication statusPublished - 01 Jun 2005

Fingerprint

Torque control
Switching frequency
Torque
Controllers
Digital signal processors
Vector spaces
Modulators
Hysteresis
Field programmable gate arrays (FPGA)
Sampling

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Toh, Chuen Ling ; Idris, N. R.N. ; Yatim, A. H.M. / Constant and high switching frequency torque controller for DTC drives. In: IEEE Power Electronics Letters. 2005 ; Vol. 3, No. 2. pp. 76-80.
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Constant and high switching frequency torque controller for DTC drives. / Toh, Chuen Ling; Idris, N. R.N.; Yatim, A. H.M.

In: IEEE Power Electronics Letters, Vol. 3, No. 2, 01.06.2005, p. 76-80.

Research output: Contribution to journalArticle

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