Suppressing pulsating torques: Torque ripple control for synchronous motors

Noriya Nakao, Kan Akatsu

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)


This article proposes a novel control technique for suppressing pulsating torques in permanent magnet synchronous motors (PMSMs) and synchronous reluctance motors (Syn-RMs). This torque-control system is based on instantaneous torque estimation with a rigorous analytical model that can account for spatial harmonics. Using this novel analytical model, the produced torque can be accurately estimated from simple preknowledge and some measurable online information. Ultimately, superimposed currents obtained from the torque estimation can smooth out the pulsating torque. The effectiveness of the proposed technique is evaluated by performing both simulations and experiments.

Original languageEnglish
Article number6891141
Pages (from-to)33-44
Number of pages12
JournalIEEE Industry Applications Magazine
Issue number6
Publication statusPublished - 2014 Nov 1

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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