Saliency-based sensorless predictive torque control with reduced torque ripple

Peter Landsmann, Ralph Kennel

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

The proposed sensorless predictive torque control (PTC) scheme relies on the anisotropy of the inductance, assuming a continuous presence of a slight current ripple. At high speed, this condition is fulfilled inherently, while at low speed it has to be ensured by an arbitrary voltage injection. Eliminating injection at high speed enables this saliency-based scheme to reach full speed. The main contribution of this paper is a general approach to estimate the extended mean admittance under arbitrary voltages. As a result, the sensorless technique becomes applicable to variable switching time PTC schemes, which cause significantly less noise and torque ripple. Experimental results demonstrate a very good dynamics, full speed range capability, machine parameter independence, and distinct noise and loss reduction achieved by the proposed sensorless PTC method.

Original languageEnglish
Article number6175982
Pages (from-to)4311-4320
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume27
Issue number10
DOIs
StatePublished - 2012

Keywords

  • Acoustic noise
  • geometry
  • predictive control
  • sensorless control

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