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Analysis and Compensation of Position Estimation Errors in Zero-Sequence BEMF-Based Sensorless Method for OW-PMSM

  • Harbin Institute of Technology Shenzhen
  • Guangdong Welling Motor Manufacturing Company Ltd.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, the position estimation errors in zero-sequence BEMF-based sensorless method for OW-PMSM drive system with common DC bus is analyzed comprehensively for the first time. The quasi-proportional resonant (PR) controller is used for closed-loop zero-sequence current (ZSC) control. Rotor position information is extracted from the output of the ZSC controller. It is revealed that the common-mode voltage (CMV) disturbances in the zero-sequence including cross coupling voltages, inverter nonlinearity caused CMV and zero-sequence voltage drops will induce position estimation errors. Each cause is investigated independently by analytical modelling and 2D finite-element (FE) analysis. The experiment results of the synthetical effects are shown as well. Meanwhile, to tackle this issue, a relevant compensation strategy using embedded-platform 2D look-up table (2D-LUT) is presented. Finally, experiments on a 12/slot-10/pole spoke-type interior OW-PMSM drive platform with common DC bus verify the effectiveness of the proposed compensation method.

Original languageEnglish
Title of host publication2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages264-269
Number of pages6
ISBN (Electronic)9798350351330
DOIs
StatePublished - 2024
Externally publishedYes
Event10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia - Chengdu, China
Duration: 17 May 202420 May 2024

Publication series

Name2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia

Conference

Conference10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
Country/TerritoryChina
CityChengdu
Period17/05/2420/05/24

Keywords

  • OW-PMSM
  • position error compensation
  • sensorless control
  • zero sequence

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