Sensorless control of synchronous motor drives: Accurate torque estimation and control under parameter errors

Anantaram Varatharajan*, Gianmario Pellegrino, Eric Armando, Marko Hinkkanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

98 Downloads (Pure)

Abstract

Accurate torque control is of interest in traction and other industrial applications, whose realization is challenged by parameters errors and temperature induced variations. This paper proposes a sensorless technique for resilient torque control in salient synchronous machines. The position observer is driven by the adaptive projection vector for position error estimation (APP) scheme. A second projection vector, orthogonal to APP for non interference, serves for flux adaptation. Based on the torque estimation, a model-based optimal current reference generation for maximum torque per ampere (MTPA) condition is designed to realize accurate torque control. The proposed scheme is validated experimentally on an 1.1 kW synchronous reluctance (SyR) machine test-bench.
Original languageEnglish
Number of pages10
JournalIEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
DOIs
Publication statusE-pub ahead of print - 13 Nov 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Sensorless control
  • Adaptive projection vector
  • Flux adaptation
  • Torque control
  • Optimal current reference

Fingerprint

Dive into the research topics of 'Sensorless control of synchronous motor drives: Accurate torque estimation and control under parameter errors'. Together they form a unique fingerprint.

Cite this