Model-based MTPA control of permanent magnet synchronous machine drives under one-phase open-circuit fault

Kahyun Lee, Young Kwang Son, Jung Ik Ha

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

3 Scopus citations

Abstract

This paper proposes a fault-tolerant MTPA control method for permanent magnet synchronous machine (PMSM) drives under one-phase open-circuit fault. The proposed method isolates the open-circuit faulted phase after the fault and the motor starts to operate as a two-phase machine fed by an H-bridge inverter. Neither an additional inverter leg nor a neutral-point access to stator or DC link is used for the speed control. This post-fault configuration enables the motor to operate in a wider range of speed even than the healthy system, despite the reduced power devices, drivers and current sensors. The behavior of the faulted system is analyzed with a modified d-q model. Based on the analytic results, a speed control algorithm is developed. The strategy includes a maximum torque per ampere (MTPA) control to improve the drive efficiency and a flux-weakening control to maximize the feasible inverter output voltage within the limit. The proposed control method is verified by experimental results.

Original languageEnglish
Title of host publication2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1847-1853
Number of pages7
ISBN (Electronic)9781509012107
DOIs
StatePublished - 13 Jul 2016
Event8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 - Hefei, China
Duration: 22 May 201626 May 2016

Publication series

Name2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016

Conference

Conference8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Country/TerritoryChina
CityHefei
Period22/05/1626/05/16

Keywords

  • Fault-tolerant control
  • MTPA
  • Open-circuit Fault
  • PMSM

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