Robust Sensors-Fault-Tolerance with Sliding Mode Estimation and Control for PMSM Drives

Suneel Kumar Kommuri, Sang Bin Lee, Kalyana Chakravarthy Veluvolu

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

In general, permanent magnet synchronous motor (PMSM) drives require four sensors (one position, one DC-link voltage and at least two current sensors) to obtain a good dynamic control performance. If an unpredictable fault occurs in any of these sensors, the performance of the drive deteriorates or even become unstable. Most of the existing works are limited to fault diagnosis (FD) of one or two sensors due to complexity. Therefore, to provide a continuous drive operation regardless of any of the sensor faults, an advanced fault-tolerant control (FTC) scheme that comprises of higher-order sliding mode (HOSM) based observers and controllers is proposed. Two HOSM observers and one Luenberger observer (LO) are designed to generate the respective residuals and provide the detection of all sensor faults. Moreover, HOSM controllers are developed to ensure finite-time convergence of the error trajectories after the fault reconfiguration. The proposed FTC scheme reduces the existing chattering phenomenon with good performance in terms of convergence speed and steady-state error. Evaluation results on a three-phase PMSM are presented to validate the effectiveness of the proposed FTC approach.

Original languageEnglish
JournalIEEE/ASME Transactions on Mechatronics
DOIs
Publication statusAccepted/In press - 2017 Dec 14

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Keywords

  • Convergence
  • Fault-tolerant control
  • Magnetic sensors
  • Mathematical model
  • observer-based fault detection
  • Observers
  • reliable control
  • residual-generation
  • Robustness
  • sliding mode control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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