Evolution of local to global minimum torque ripples of direct torque control for induction motor drives

Kuo Kai Shyu, Juu Kuh Lin, Van Truong Pham, Thi Thao Tran, Li Jen Shang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This study discusses the evolution of the local minimum to global minimum torque ripples of the direct torque control of induction motor drives. This study will show that the previous minimum torque ripple design is not the global minimum but a local minimum root-mean-square (RMS) torque ripple. To show this, the study finds the optimal initial torque error, which makes the global minimum torque ripple, and then the related global minimum RMS torque ripple. Moreover, after finding the optimal initial torque error and its related global minimum RMS torque ripple, this study derives the evolution of the initial torque ripple error, under the local minimum RMS torque ripple control strategy. Furthermore, this study also proves that under the local minimum RMS torque ripple control strategy, the local minimum torque ripple will converge to the global minimum value.

Original languageEnglish
Pages (from-to)608-615
Number of pages8
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Volume36
Issue number5
DOIs
StatePublished - 1 Jul 2013

Keywords

  • induction motor drives
  • minimization methods
  • pulse width modulated inverters
  • torque control

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